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Message-Id: <20230127112932.38045-3-steven.price@arm.com>
Date: Fri, 27 Jan 2023 11:29:06 +0000
From: Steven Price <steven.price@....com>
To: kvm@...r.kernel.org, kvmarm@...ts.linux.dev
Cc: Steven Price <steven.price@....com>,
Catalin Marinas <catalin.marinas@....com>,
Marc Zyngier <maz@...nel.org>, Will Deacon <will@...nel.org>,
James Morse <james.morse@....com>,
Oliver Upton <oliver.upton@...ux.dev>,
Suzuki K Poulose <suzuki.poulose@....com>,
Zenghui Yu <yuzenghui@...wei.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Joey Gouly <joey.gouly@....com>,
Alexandru Elisei <alexandru.elisei@....com>,
Christoffer Dall <christoffer.dall@....com>,
Fuad Tabba <tabba@...gle.com>, linux-coco@...ts.linux.dev
Subject: [RFC PATCH 02/28] arm64: RME: Add SMC definitions for calling the RMM
The RMM (Realm Management Monitor) provides functionality that can be
accessed by SMC calls from the host.
The SMC definitions are based on DEN0137[1] version A-bet0.
[1] https://developer.arm.com/documentation/den0137/latest
Signed-off-by: Steven Price <steven.price@....com>
---
arch/arm64/include/asm/rmi_smc.h | 235 +++++++++++++++++++++++++++++++
1 file changed, 235 insertions(+)
create mode 100644 arch/arm64/include/asm/rmi_smc.h
diff --git a/arch/arm64/include/asm/rmi_smc.h b/arch/arm64/include/asm/rmi_smc.h
new file mode 100644
index 000000000000..16ff65090f3a
--- /dev/null
+++ b/arch/arm64/include/asm/rmi_smc.h
@@ -0,0 +1,235 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023 ARM Ltd.
+ */
+
+#ifndef __ASM_RME_SMC_H
+#define __ASM_RME_SMC_H
+
+#include <linux/arm-smccc.h>
+
+#define SMC_RxI_CALL(func) \
+ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
+ ARM_SMCCC_SMC_64, \
+ ARM_SMCCC_OWNER_STANDARD, \
+ (func))
+
+/* FID numbers from alp10 specification */
+
+#define SMC_RMI_DATA_CREATE SMC_RxI_CALL(0x0153)
+#define SMC_RMI_DATA_CREATE_UNKNOWN SMC_RxI_CALL(0x0154)
+#define SMC_RMI_DATA_DESTROY SMC_RxI_CALL(0x0155)
+#define SMC_RMI_FEATURES SMC_RxI_CALL(0x0165)
+#define SMC_RMI_GRANULE_DELEGATE SMC_RxI_CALL(0x0151)
+#define SMC_RMI_GRANULE_UNDELEGATE SMC_RxI_CALL(0x0152)
+#define SMC_RMI_PSCI_COMPLETE SMC_RxI_CALL(0x0164)
+#define SMC_RMI_REALM_ACTIVATE SMC_RxI_CALL(0x0157)
+#define SMC_RMI_REALM_CREATE SMC_RxI_CALL(0x0158)
+#define SMC_RMI_REALM_DESTROY SMC_RxI_CALL(0x0159)
+#define SMC_RMI_REC_AUX_COUNT SMC_RxI_CALL(0x0167)
+#define SMC_RMI_REC_CREATE SMC_RxI_CALL(0x015a)
+#define SMC_RMI_REC_DESTROY SMC_RxI_CALL(0x015b)
+#define SMC_RMI_REC_ENTER SMC_RxI_CALL(0x015c)
+#define SMC_RMI_RTT_CREATE SMC_RxI_CALL(0x015d)
+#define SMC_RMI_RTT_DESTROY SMC_RxI_CALL(0x015e)
+#define SMC_RMI_RTT_FOLD SMC_RxI_CALL(0x0166)
+#define SMC_RMI_RTT_INIT_RIPAS SMC_RxI_CALL(0x0168)
+#define SMC_RMI_RTT_MAP_UNPROTECTED SMC_RxI_CALL(0x015f)
+#define SMC_RMI_RTT_READ_ENTRY SMC_RxI_CALL(0x0161)
+#define SMC_RMI_RTT_SET_RIPAS SMC_RxI_CALL(0x0169)
+#define SMC_RMI_RTT_UNMAP_UNPROTECTED SMC_RxI_CALL(0x0162)
+#define SMC_RMI_VERSION SMC_RxI_CALL(0x0150)
+
+#define RMI_ABI_MAJOR_VERSION 1
+#define RMI_ABI_MINOR_VERSION 0
+
+#define RMI_UNASSIGNED 0
+#define RMI_DESTROYED 1
+#define RMI_ASSIGNED 2
+#define RMI_TABLE 3
+#define RMI_VALID_NS 4
+
+#define RMI_ABI_VERSION_GET_MAJOR(version) ((version) >> 16)
+#define RMI_ABI_VERSION_GET_MINOR(version) ((version) & 0xFFFF)
+
+#define RMI_RETURN_STATUS(ret) ((ret) & 0xFF)
+#define RMI_RETURN_INDEX(ret) (((ret) >> 8) & 0xFF)
+
+#define RMI_SUCCESS 0
+#define RMI_ERROR_INPUT 1
+#define RMI_ERROR_REALM 2
+#define RMI_ERROR_REC 3
+#define RMI_ERROR_RTT 4
+#define RMI_ERROR_IN_USE 5
+
+#define RMI_EMPTY 0
+#define RMI_RAM 1
+
+#define RMI_NO_MEASURE_CONTENT 0
+#define RMI_MEASURE_CONTENT 1
+
+#define RMI_FEATURE_REGISTER_0_S2SZ GENMASK(7, 0)
+#define RMI_FEATURE_REGISTER_0_LPA2 BIT(8)
+#define RMI_FEATURE_REGISTER_0_SVE_EN BIT(9)
+#define RMI_FEATURE_REGISTER_0_SVE_VL GENMASK(13, 10)
+#define RMI_FEATURE_REGISTER_0_NUM_BPS GENMASK(17, 14)
+#define RMI_FEATURE_REGISTER_0_NUM_WPS GENMASK(21, 18)
+#define RMI_FEATURE_REGISTER_0_PMU_EN BIT(22)
+#define RMI_FEATURE_REGISTER_0_PMU_NUM_CTRS GENMASK(27, 23)
+#define RMI_FEATURE_REGISTER_0_HASH_SHA_256 BIT(28)
+#define RMI_FEATURE_REGISTER_0_HASH_SHA_512 BIT(29)
+
+struct realm_params {
+ union {
+ u64 features_0;
+ u8 padding_1[0x100];
+ };
+ union {
+ u8 measurement_algo;
+ u8 padding_2[0x300];
+ };
+ union {
+ u8 rpv[64];
+ u8 padding_3[0x400];
+ };
+ union {
+ struct {
+ u16 vmid;
+ u8 padding_4[6];
+ u64 rtt_base;
+ u64 rtt_level_start;
+ u32 rtt_num_start;
+ };
+ u8 padding_5[0x800];
+ };
+};
+
+/*
+ * The number of GPRs (starting from X0) that are
+ * configured by the host when a REC is created.
+ */
+#define REC_CREATE_NR_GPRS 8
+
+#define REC_PARAMS_FLAG_RUNNABLE BIT_ULL(0)
+
+#define REC_PARAMS_AUX_GRANULES 16
+
+struct rec_params {
+ union {
+ u64 flags;
+ u8 padding1[0x100];
+ };
+ union {
+ u64 mpidr;
+ u8 padding2[0x100];
+ };
+ union {
+ u64 pc;
+ u8 padding3[0x100];
+ };
+ union {
+ u64 gprs[REC_CREATE_NR_GPRS];
+ u8 padding4[0x500];
+ };
+ u64 num_rec_aux;
+ u64 aux[REC_PARAMS_AUX_GRANULES];
+};
+
+#define RMI_EMULATED_MMIO BIT(0)
+#define RMI_INJECT_SEA BIT(1)
+#define RMI_TRAP_WFI BIT(2)
+#define RMI_TRAP_WFE BIT(3)
+
+#define REC_RUN_GPRS 31
+#define REC_GIC_NUM_LRS 16
+
+struct rec_entry {
+ union { /* 0x000 */
+ u64 flags;
+ u8 padding0[0x200];
+ };
+ union { /* 0x200 */
+ u64 gprs[REC_RUN_GPRS];
+ u8 padding2[0x100];
+ };
+ union { /* 0x300 */
+ struct {
+ u64 gicv3_hcr;
+ u64 gicv3_lrs[REC_GIC_NUM_LRS];
+ };
+ u8 padding3[0x100];
+ };
+ u8 padding4[0x400];
+};
+
+struct rec_exit {
+ union { /* 0x000 */
+ u8 exit_reason;
+ u8 padding0[0x100];
+ };
+ union { /* 0x100 */
+ struct {
+ u64 esr;
+ u64 far;
+ u64 hpfar;
+ };
+ u8 padding1[0x100];
+ };
+ union { /* 0x200 */
+ u64 gprs[REC_RUN_GPRS];
+ u8 padding2[0x100];
+ };
+ union { /* 0x300 */
+ struct {
+ u64 gicv3_hcr;
+ u64 gicv3_lrs[REC_GIC_NUM_LRS];
+ u64 gicv3_misr;
+ u64 gicv3_vmcr;
+ };
+ u8 padding3[0x100];
+ };
+ union { /* 0x400 */
+ struct {
+ u64 cntp_ctl;
+ u64 cntp_cval;
+ u64 cntv_ctl;
+ u64 cntv_cval;
+ };
+ u8 padding4[0x100];
+ };
+ union { /* 0x500 */
+ struct {
+ u64 ripas_base;
+ u64 ripas_size;
+ u64 ripas_value; /* Only lowest bit */
+ };
+ u8 padding5[0x100];
+ };
+ union { /* 0x600 */
+ u16 imm;
+ u8 padding6[0x100];
+ };
+ union { /* 0x700 */
+ struct {
+ u64 pmu_ovf;
+ u64 pmu_intr_en;
+ u64 pmu_cntr_en;
+ };
+ u8 padding7[0x100];
+ };
+};
+
+struct rec_run {
+ struct rec_entry entry;
+ struct rec_exit exit;
+};
+
+#define RMI_EXIT_SYNC 0x00
+#define RMI_EXIT_IRQ 0x01
+#define RMI_EXIT_FIQ 0x02
+#define RMI_EXIT_PSCI 0x03
+#define RMI_EXIT_RIPAS_CHANGE 0x04
+#define RMI_EXIT_HOST_CALL 0x05
+#define RMI_EXIT_SERROR 0x06
+
+#endif
--
2.34.1
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