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kern: skeleton enough types to init KCoreLocalRegion in main()

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This commit is contained in:
Michael Scire 2020-01-29 14:26:24 -08:00
parent ad0d2faa6c
commit 981bb1f15d
24 changed files with 1066 additions and 33 deletions
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33
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_hardware_timer.hpp Normal file
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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mesosphere/kern_select_cpu.hpp>
#include <mesosphere/kern_k_hardware_timer_base.hpp>
namespace ams::kern::arm64 {
class KHardwareTimer : public KHardwareTimerBase {
public:
static constexpr s32 InterruptId = 30; /* Nintendo uses the non-secure timer interrupt. */
public:
constexpr KHardwareTimer() : KHardwareTimerBase() { /* ... */ }
virtual void DoTask() override;
/* TODO: Actually implement more of KHardwareTimer, */
};
}

122
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_interrupt_controller.hpp Normal file
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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours.hpp>
#include <mesosphere/kern_select_cpu.hpp>
#include <mesosphere/kern_k_typed_address.hpp>
namespace ams::kern::arm64 {
struct GicDistributor {
u32 ctlr;
u32 typer;
u32 iidr;
u32 reserved_0x0c;
u32 statusr;
u32 reserved_0x14[3];
u32 impldef_0x20[8];
u32 setspi_nsr;
u32 reserved_0x44;
u32 clrspi_nsr;
u32 reserved_0x4c;
u32 setspi_sr;
u32 reserved_0x54;
u32 clrspi_sr;
u32 reserved_0x5c[9];
u32 igroupr[32];
u32 isenabler[32];
u32 icenabler[32];
u32 ispendr[32];
u32 icpendr[32];
u32 isactiver[32];
u32 icactiver[32];
u8 ipriorityr[1020];
u32 _0x7fc;
u8 itargetsr[1020];
u32 _0xbfc;
u32 icfgr[64];
u32 igrpmodr[32];
u32 _0xd80[32];
u32 nsacr[64];
u32 sgir;
u32 _0xf04[3];
u32 cpendsgir[4];
u32 spendsgir[4];
u32 reserved_0xf30[52];
};
static_assert(std::is_pod<GicDistributor>::value);
static_assert(sizeof(GicDistributor) == 0x1000);
struct GicController {
u32 ctlr;
u32 pmr;
u32 bpr;
u32 iar;
u32 eoir;
u32 rpr;
u32 hppir;
u32 abpr;
u32 aiar;
u32 aeoir;
u32 ahppir;
u32 statusr;
u32 reserved_30[4];
u32 impldef_40[36];
u32 apr[4];
u32 nsapr[4];
u32 reserved_f0[3];
u32 iidr;
u32 reserved_100[960];
u32 dir;
u32 _0x1004[1023];
};
static_assert(std::is_pod<GicController>::value);
static_assert(sizeof(GicController) == 0x2000);
struct KInterruptController {
NON_COPYABLE(KInterruptController);
NON_MOVEABLE(KInterruptController);
public:
static constexpr size_t NumLocalInterrupts = 32;
static constexpr size_t NumGlobalInterrupts = 988;
static constexpr size_t NumInterrupts = NumLocalInterrupts + NumGlobalInterrupts;
public:
struct LocalState {
u32 local_isenabler[NumLocalInterrupts / 32];
u32 local_ipriorityr[NumLocalInterrupts / 4];
u32 local_targetsr[NumLocalInterrupts / 4];
u32 local_icfgr[NumLocalInterrupts / 16];
};
struct GlobalState {
u32 global_isenabler[NumGlobalInterrupts / 32];
u32 global_ipriorityr[NumGlobalInterrupts / 4];
u32 global_targetsr[NumGlobalInterrupts / 4];
u32 global_icfgr[NumGlobalInterrupts / 16];
};
private:
static inline volatile GicDistributor *s_gicd;
static inline volatile GicController *s_gicc;
static inline u32 s_mask[cpu::NumCores];
private:
volatile GicDistributor *gicd;
volatile GicController *gicc;
public:
KInterruptController() { /* Don't initialize anything -- this will be taken care of by ::Initialize() */ }
/* TODO: Actually implement KInterruptController functionality. */
};
}

82
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_interrupt_manager.hpp Normal file
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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours.hpp>
#include <mesosphere/kern_select_cpu.hpp>
#include <mesosphere/kern_k_spin_lock.hpp>
#include <mesosphere/kern_k_interrupt_task.hpp>
#include <mesosphere/kern_select_interrupt_controller.hpp>
namespace ams::kern::arm64 {
class KInterruptManager {
NON_COPYABLE(KInterruptManager);
NON_MOVEABLE(KInterruptManager);
private:
struct KCoreLocalInterruptEntry {
KInterruptHandler *handler;
bool manually_cleared;
bool needs_clear;
u8 priority;
};
struct KGlobalInterruptEntry {
KInterruptHandler *handler;
bool manually_cleared;
bool needs_clear;
};
private:
static inline KSpinLock s_lock;
static inline KGlobalInterruptEntry s_global_interrupts[KInterruptController::NumGlobalInterrupts];
static inline KInterruptController::GlobalState s_global_state;
static inline bool s_global_state_saved;
private:
KCoreLocalInterruptEntry core_local_interrupts[KInterruptController::NumLocalInterrupts];
KInterruptController interrupt_controller;
KInterruptController::LocalState local_state;
bool local_state_saved;
public:
KInterruptManager() : local_state_saved(false) { /* Leave things mostly uninitalized. We'll call ::Initialize() later. */ }
/* TODO: Actually implement KInterruptManager functionality. */
public:
static ALWAYS_INLINE u32 DisableInterrupts() {
u64 intr_state;
__asm__ __volatile__("mrs %[intr_state], daif" : [intr_state]"=r"(intr_state));
__asm__ __volatile__("msr daif, %[intr_state]" :: [intr_state]"r"(intr_state | 0x80));
return intr_state;
}
static ALWAYS_INLINE u32 EnableInterrupts() {
u64 intr_state;
__asm__ __volatile__("mrs %[intr_state], daif" : [intr_state]"=r"(intr_state));
__asm__ __volatile__("msr daif, %[intr_state]" :: [intr_state]"r"(intr_state & 0x7F));
return intr_state;
}
static ALWAYS_INLINE void RestoreInterrupts(u32 intr_state) {
u64 cur_state;
__asm__ __volatile__("mrs %[cur_state], daif" : [cur_state]"=r"(cur_state));
__asm__ __volatile__("msr daif, %[intr_state]" :: [intr_state]"r"((cur_state & 0x7F) | (intr_state & 0x80)));
}
static ALWAYS_INLINE bool AreInterruptsEnabled() {
u64 intr_state;
__asm__ __volatile__("mrs %[intr_state], daif" : [intr_state]"=r"(intr_state));
return (intr_state & 0x80) == 0;
}
};
}

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libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_spin_lock.hpp Normal file
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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours.hpp>
#include <mesosphere/kern_select_cpu.hpp>
namespace ams::kern::arm64 {
class KNotAlignedSpinLock {
private:
u32 packed_tickets;
public:
constexpr KNotAlignedSpinLock() : packed_tickets(0) { /* ... */ }
void Lock() {
u32 tmp0, tmp1;
__asm__ __volatile__(
" prfm pstl1keep, %[packed_tickets]\n"
"loop1:\n"
" ldaxr %w[tmp0], %[packed_tickets]\n"
" add %w[tmp0], %w[tmp0], #0x10000\n"
" stxr %w[tmp1], %w[tmp0], %[packed_tickets]\n"
" cbnz %w[tmp1], loop1\n"
" \n"
" and %w[tmp1], %w[tmp0], #0xFFFF\n"
" cmp %w[tmp1], %w[tmp0], lsr #16\n"
" b.eq done"
" sevl\n"
"loop2:\n"
" wfe\n"
" ldaxrh %w[tmp1], %[packed_tickets]\n"
" cmp %w[tmp1], %w[tmp0], lsr #16\n"
" b.ne loop2\n"
"done:\n"
: [tmp0]"=&r"(tmp0), [tmp1]"=&r"(tmp1), [packed_tickets]"+Q"(this->packed_tickets)
:
: "cc", "memory"
);
}
void Unlock() {
const u32 value = this->packed_tickets + 1;
__asm__ __volatile__(
" stlrh %w[value], %[packed_tickets]\n"
: [packed_tickets]"+Q"(this->packed_tickets)
: [value]"r"(value)
: "memory"
);
}
};
static_assert(sizeof(KNotAlignedSpinLock) == sizeof(u32));
class KAlignedSpinLock {
private:
alignas(cpu::DataCacheLineSize) u16 current_ticket;
alignas(cpu::DataCacheLineSize) u16 next_ticket;
public:
constexpr KAlignedSpinLock() : current_ticket(0), next_ticket(0) { /* ... */ }
void Lock() {
u32 tmp0, tmp1, got_lock;
__asm__ __volatile__(
" prfm pstl1keep, %[next_ticket]\n"
"loop1:\n"
" ldaxrh %w[tmp0], %[next_ticket]\n"
" add %w[tmp1], %w[tmp0], #0x1\n"
" stxrh %w[got_lock], %w[tmp1], %[next_ticket]\n"
" cbnz %w[got_lock], loop1\n"
" \n"
" sevl\n"
"loop2:\n"
" wfe\n"
" ldaxrh %w[tmp1], %[current_ticket]\n"
" cmp %w[tmp1], %w[tmp0]\n"
" b.ne loop2\n"
: [tmp0]"=&r"(tmp0), [tmp1]"=&r"(tmp1), [got_lock]"=&r"(got_lock), [next_ticket]"+Q"(this->next_ticket)
: [current_ticket]"Q"(this->current_ticket)
: "cc", "memory"
);
}
void Unlock() {
const u32 value = this->current_ticket + 1;
__asm__ __volatile__(
" stlrh %w[value], %[current_ticket]\n"
: [current_ticket]"+Q"(this->current_ticket)
: [value]"r"(value)
: "memory"
);
}
};
static_assert(sizeof(KAlignedSpinLock) == 2 * cpu::DataCacheLineSize);
using KSpinLock = KAlignedSpinLock;
}