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https://github.com/riscv-software-src/opensbi.git
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416ceb3cd7
Let us reduce the size of struct sbi_tlb_info by doing the following: 1) Change the data type of asid and vmid fields to uint16_t 2) Replace local_fn() function pointer with an enum Based on the above, the size of struct sbi_tlb_info is reduced by 16 bytes on RV64 and 4 bytes on RV32. Signed-off-by: Anup Patel <apatel@ventanamicro.com>
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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* Atish Patra <atish.patra@wdc.com>
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*/
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#include <sbi/riscv_asm.h>
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#include <sbi/sbi_error.h>
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#include <sbi/sbi_ecall.h>
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#include <sbi/sbi_ecall_interface.h>
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#include <sbi/sbi_trap.h>
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#include <sbi/sbi_tlb.h>
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static int sbi_ecall_rfence_handler(unsigned long extid, unsigned long funcid,
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const struct sbi_trap_regs *regs,
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unsigned long *out_val,
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struct sbi_trap_info *out_trap)
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{
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int ret = 0;
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unsigned long vmid;
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struct sbi_tlb_info tlb_info;
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u32 source_hart = current_hartid();
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if (funcid >= SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID &&
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funcid <= SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA)
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if (!misa_extension('H'))
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return SBI_ENOTSUPP;
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switch (funcid) {
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case SBI_EXT_RFENCE_REMOTE_FENCE_I:
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SBI_TLB_INFO_INIT(&tlb_info, 0, 0, 0, 0,
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SBI_TLB_FENCE_I, source_hart);
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ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
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break;
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case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA:
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SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, 0, 0,
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SBI_TLB_HFENCE_GVMA, source_hart);
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ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
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break;
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case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID:
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SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, 0, regs->a4,
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SBI_TLB_HFENCE_GVMA_VMID, source_hart);
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ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
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break;
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case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA:
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vmid = (csr_read(CSR_HGATP) & HGATP_VMID_MASK);
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vmid = vmid >> HGATP_VMID_SHIFT;
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SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, 0, vmid,
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SBI_TLB_HFENCE_VVMA, source_hart);
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ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
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break;
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case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID:
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vmid = (csr_read(CSR_HGATP) & HGATP_VMID_MASK);
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vmid = vmid >> HGATP_VMID_SHIFT;
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SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, regs->a4,
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vmid, SBI_TLB_HFENCE_VVMA_ASID, source_hart);
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ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
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break;
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case SBI_EXT_RFENCE_REMOTE_SFENCE_VMA:
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SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, 0, 0,
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SBI_TLB_SFENCE_VMA, source_hart);
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ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
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break;
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case SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID:
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SBI_TLB_INFO_INIT(&tlb_info, regs->a2, regs->a3, regs->a4, 0,
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SBI_TLB_SFENCE_VMA_ASID, source_hart);
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ret = sbi_tlb_request(regs->a0, regs->a1, &tlb_info);
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break;
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default:
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ret = SBI_ENOTSUPP;
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}
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return ret;
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}
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struct sbi_ecall_extension ecall_rfence;
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static int sbi_ecall_rfence_register_extensions(void)
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{
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return sbi_ecall_register_extension(&ecall_rfence);
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}
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struct sbi_ecall_extension ecall_rfence = {
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.extid_start = SBI_EXT_RFENCE,
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.extid_end = SBI_EXT_RFENCE,
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.register_extensions = sbi_ecall_rfence_register_extensions,
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.handle = sbi_ecall_rfence_handler,
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};
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