diff options
Diffstat (limited to 'platform/common/sys')
| -rw-r--r-- | platform/common/sys/clint.c | 162 | ||||
| -rw-r--r-- | platform/common/sys/objects.mk | 10 |
2 files changed, 0 insertions, 172 deletions
diff --git a/platform/common/sys/clint.c b/platform/common/sys/clint.c deleted file mode 100644 index eba056f1..00000000 --- a/platform/common/sys/clint.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * SPDX-License-Identifier: BSD-2-Clause - * - * Copyright (c) 2019 Western Digital Corporation or its affiliates. - * - * Authors: - * Anup Patel <[email protected]> - */ - -#include <sbi/riscv_io.h> -#include <sbi/riscv_atomic.h> -#include <sbi/sbi_hart.h> -#include <plat/sys/clint.h> - -static u32 clint_ipi_hart_count; -static volatile void *clint_ipi_base; -static volatile u32 *clint_ipi; - -void clint_ipi_send(u32 target_hart) -{ - if (clint_ipi_hart_count <= target_hart) - return; - - /* Set CLINT IPI */ - writel(1, &clint_ipi[target_hart]); -} - -void clint_ipi_sync(u32 target_hart) -{ - u32 target_ipi, incoming_ipi; - u32 source_hart = sbi_current_hartid(); - - if (clint_ipi_hart_count <= target_hart) - return; - - /* Wait until target HART has handled IPI */ - incoming_ipi = 0; - while (1) { - target_ipi = readl(&clint_ipi[target_hart]); - if (!target_ipi) - break; - - incoming_ipi |= - atomic_raw_xchg_uint(&clint_ipi[source_hart], 0); - } - - if (incoming_ipi) - writel(incoming_ipi, &clint_ipi[source_hart]); -} - -void clint_ipi_clear(u32 target_hart) -{ - if (clint_ipi_hart_count <= target_hart) - return; - - /* Clear CLINT IPI */ - writel(0, &clint_ipi[target_hart]); -} - -int clint_warm_ipi_init(void) -{ - u32 hartid = sbi_current_hartid(); - - if (!clint_ipi_base) - return -1; - - /* Clear CLINT IPI */ - clint_ipi_clear(hartid); - - return 0; -} - -int clint_cold_ipi_init(unsigned long base, u32 hart_count) -{ - /* Figure-out CLINT IPI register address */ - clint_ipi_hart_count = hart_count; - clint_ipi_base = (void *)base; - clint_ipi = (u32 *)clint_ipi_base; - - return 0; -} - -static u32 clint_time_hart_count; -static volatile void *clint_time_base; -static volatile u64 *clint_time_val; -static volatile u64 *clint_time_cmp; - -u64 clint_timer_value(void) -{ -#if __riscv_xlen == 64 - return readq_relaxed(clint_time_val); -#else - u64 tmp; - tmp = readl_relaxed((void *)clint_time_val + 0x04); - tmp <<= 32; - tmp |= readl_relaxed(clint_time_val); - return tmp; -#endif -} - -void clint_timer_event_stop(void) -{ - u32 target_hart = sbi_current_hartid(); - - if (clint_time_hart_count <= target_hart) - return; - - /* Clear CLINT Time Compare */ -#if __riscv_xlen == 64 - writeq_relaxed(-1ULL, &clint_time_cmp[target_hart]); -#else - writel_relaxed(-1UL, &clint_time_cmp[target_hart]); - writel_relaxed(-1UL, (void *)(&clint_time_cmp[target_hart]) + 0x04); -#endif -} - -void clint_timer_event_start(u64 next_event) -{ - u32 target_hart = sbi_current_hartid(); - - if (clint_time_hart_count <= target_hart) - return; - - /* Program CLINT Time Compare */ -#if __riscv_xlen == 64 - writeq_relaxed(next_event, &clint_time_cmp[target_hart]); -#else - u32 mask = -1UL; - writel_relaxed(next_event & mask, &clint_time_cmp[target_hart]); - writel_relaxed(next_event >> 32, - (void *)(&clint_time_cmp[target_hart]) + 0x04); -#endif -} - -int clint_warm_timer_init(void) -{ - u32 target_hart = sbi_current_hartid(); - - if (clint_time_hart_count <= target_hart || !clint_time_base) - return -1; - - /* Clear CLINT Time Compare */ -#if __riscv_xlen == 64 - writeq_relaxed(-1ULL, &clint_time_cmp[target_hart]); -#else - writel_relaxed(-1UL, &clint_time_cmp[target_hart]); - writel_relaxed(-1UL, (void *)(&clint_time_cmp[target_hart]) + 0x04); -#endif - - return 0; -} - -int clint_cold_timer_init(unsigned long base, u32 hart_count) -{ - /* Figure-out CLINT Time register address */ - clint_time_hart_count = hart_count; - clint_time_base = (void *)base; - clint_time_val = (u64 *)(clint_time_base + 0xbff8); - clint_time_cmp = (u64 *)(clint_time_base + 0x4000); - - return 0; -} diff --git a/platform/common/sys/objects.mk b/platform/common/sys/objects.mk deleted file mode 100644 index 5cb98869..00000000 --- a/platform/common/sys/objects.mk +++ /dev/null @@ -1,10 +0,0 @@ -# -# SPDX-License-Identifier: BSD-2-Clause -# -# Copyright (c) 2019 Western Digital Corporation or its affiliates. -# -# Authors: -# Anup Patel <[email protected]> -# - -platform-common-objs-$(PLATFORM_SYS_CLINT) += sys/clint.o |