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add hardware loop CSR access

This commit is contained in:
Eyck Jentzsch 2022-03-25 11:33:44 +01:00
parent 30ae743361
commit 9dfca612b7
4 changed files with 130 additions and 0 deletions
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100
incl/iss/arch/hwl.h Normal file
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@ -0,0 +1,100 @@
/*******************************************************************************
* Copyright (C) 2022 MINRES Technologies GmbH
* 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. Neither the name of the copyright holder 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.
*
* Contributors:
* eyck@minres.com - initial implementation
******************************************************************************/
#ifndef _RISCV_HART_M_P_HWL_H
#define _RISCV_HART_M_P_HWL_H
#include <iss/vm_types.h>
namespace iss {
namespace arch {
template <typename BASE> class hwl : public BASE {
public:
using base_class = BASE;
using this_class = hwl<BASE>;
using reg_t = typename BASE::reg_t;
hwl();
virtual ~hwl() = default;
protected:
iss::status read_custom_csr_reg(unsigned addr, reg_t &val) override;
iss::status write_custom_csr_reg(unsigned addr, reg_t val) override;
};
template<typename BASE>
inline hwl<BASE>::hwl() {
for (unsigned addr = 0x800; addr < 0x803; ++addr){
this->register_custom_csr_rd(addr);
this->register_custom_csr_wr(addr);
}
for (unsigned addr = 0x804; addr < 0x807; ++addr){
this->register_custom_csr_rd(addr);
this->register_custom_csr_wr(addr);
}
}
template<typename BASE>
inline iss::status iss::arch::hwl<BASE>::read_custom_csr_reg(unsigned addr, reg_t &val) {
switch(addr){
case 0x800: val = this->reg.lpstart0; break;
case 0x801: val = this->reg.lpend0; break;
case 0x802: val = this->reg.lpcount0; break;
case 0x804: val = this->reg.lpstart1; break;
case 0x805: val = this->reg.lpend1; break;
case 0x806: val = this->reg.lpcount1; break;
}
return iss::Ok;
}
template<typename BASE>
inline iss::status iss::arch::hwl<BASE>::write_custom_csr_reg(unsigned addr, reg_t val) {
switch(addr){
case 0x800: this->reg.lpstart0 = val; break;
case 0x801: this->reg.lpend0 = val; break;
case 0x802: this->reg.lpcount0 = val; break;
case 0x804: this->reg.lpstart1 = val; break;
case 0x805: this->reg.lpend1 = val; break;
case 0x806: this->reg.lpcount1 = val; break;
}
return iss::Ok;
}
} // namespace arch
} // namespace iss
#endif /* _RISCV_HART_M_P_H */

10
incl/iss/arch/riscv_hart_m_p.h
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@ -321,6 +321,16 @@ protected:
iss::status read_dpc_reg(unsigned addr, reg_t &val);
iss::status write_dpc_reg(unsigned addr, reg_t val);
virtual iss::status read_custom_csr_reg(unsigned addr, reg_t &val) {return iss::status::Err;};
virtual iss::status write_custom_csr_reg(unsigned addr, reg_t val) {return iss::status::Err;};
void register_custom_csr_rd(unsigned addr){
csr_rd_cb[addr] = &this_class::read_custom_csr_reg;
}
void register_custom_csr_wr(unsigned addr){
csr_wr_cb[addr] = &this_class::write_custom_csr_reg;
}
reg_t mhartid_reg{0x0};
std::function<iss::status(phys_addr_t, unsigned, uint8_t *const)>mem_read_cb;
std::function<iss::status(phys_addr_t, unsigned, const uint8_t *const)> mem_write_cb;

10
incl/iss/arch/riscv_hart_msu_vp.h
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@ -408,6 +408,16 @@ private:
iss::status read_fcsr(unsigned addr, reg_t &val);
iss::status write_fcsr(unsigned addr, reg_t val);
virtual iss::status read_custom_csr_reg(unsigned addr, reg_t &val) {return iss::status::Err;};
virtual iss::status write_custom_csr_reg(unsigned addr, reg_t val) {return iss::status::Err;};
void register_custom_csr_rd(unsigned addr){
csr_rd_cb[addr] = &this_class::read_custom_csr_reg;
}
void register_custom_csr_wr(unsigned addr){
csr_wr_cb[addr] = &this_class::write_custom_csr_reg;
}
reg_t mhartid_reg{0x0};
std::function<iss::status(phys_addr_t, unsigned, uint8_t *const)>mem_read_cb;
std::function<iss::status(phys_addr_t, unsigned, const uint8_t *const)> mem_write_cb;

10
incl/iss/arch/riscv_hart_mu_p.h
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@ -339,6 +339,16 @@ protected:
iss::status write_dpc_reg(unsigned addr, reg_t val);
iss::status write_pmpcfg_reg(unsigned addr, reg_t val);
virtual iss::status read_custom_csr_reg(unsigned addr, reg_t &val) {return iss::status::Err;};
virtual iss::status write_custom_csr_reg(unsigned addr, reg_t val) {return iss::status::Err;};
void register_custom_csr_rd(unsigned addr){
csr_rd_cb[addr] = &this_class::read_custom_csr_reg;
}
void register_custom_csr_wr(unsigned addr){
csr_wr_cb[addr] = &this_class::write_custom_csr_reg;
}
reg_t mhartid_reg{0x0};
std::function<iss::status(phys_addr_t, unsigned, uint8_t *const)>mem_read_cb;
std::function<iss::status(phys_addr_t, unsigned, const uint8_t *const)> mem_write_cb;