riscv64: add SBI syscall interface

Change-Id: Ifab2a65fdad1de807e2334ec94137b992d6fe19d Reviewed-on: https://review.haiku-os.org/c/haiku/+/4300 Reviewed-by: Alex von Gluck IV <[email protected]>
2021-08-06 15:51:16 +00:00
parent c15bf9b792
commit 1deede7388
3 changed files with 206 additions and 0 deletions
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2021, Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _SBI_SYSCALLS_H_
+#define _SBI_SYSCALLS_H_
+
+
+#include <stdint.h>
+
+
+enum {
+	SBI_SUCCESS               =  0,
+	SBI_ERR_FAILED            = -1,
+	SBI_ERR_NOT_SUPPORTED     = -2,
+	SBI_ERR_INVALID_PARAM     = -3,
+	SBI_ERR_DENIED            = -4,
+	SBI_ERR_INVALID_ADDRESS   = -5,
+	SBI_ERR_ALREADY_AVAILABLE = -6,
+};
+
+struct sbiret {
+	long error; // a0
+	long value; // a1
+};
+
+enum {
+	SBI_HART_STATE_STARTED         = 0,
+	SBI_HART_STATE_STOPPED         = 1,
+	SBI_HART_STATE_START_PENDING   = 2,
+	SBI_HART_STATE_STOP_PENDING    = 3,
+	SBI_HART_STATE_SUSPENDED       = 4,
+	SBI_HART_STATE_SUSPEND_PENDING = 5,
+	SBI_HART_STATE_RESUME_PENDING  = 6,
+};
+
+enum {
+	SBI_RESET_TYPE_SHUTDOWN    = 0,
+	SBI_RESET_TYPE_COLD_REBOOT = 1,
+	SBI_RESET_TYPE_WARM_REBOOT = 2,
+};
+
+enum {
+	SBI_RESET_REASON_NONE           = 0,
+	SBI_RESET_REASON_SYSTEM_FAILURE = 1,
+};
+
+// a7: EID, a6: FID
+
+extern "C" {
+
+// Base Extension (EID #0x10)
+struct sbiret sbi_get_spec_version(void);             // FID #0
+struct sbiret sbi_get_impl_id(void);                  // FID #1
+struct sbiret sbi_get_impl_version(void);             // FID #2
+struct sbiret sbi_probe_extension(long extension_id); // FID #3
+struct sbiret sbi_get_mvendorid(void);                // FID #4
+struct sbiret sbi_get_marchid(void);                  // FID #5
+struct sbiret sbi_get_mimpid(void);                   // FID #6
+
+// Legacy Extensions (EIDs #0x00 - #0x0F)
+void sbi_set_timer_legacy(uint64_t stime_value);                // EID #0x00
+void sbi_console_putchar_legacy(int ch);                        // EID #0x01
+int sbi_console_getchar_legacy(void);                           // EID #0x02
+void sbi_clear_ipi_legacy(void);                                // EID #0x03
+void sbi_send_ipi_legacy(const unsigned long *hart_mask);       // EID #0x04
+void sbi_remote_fence_i_legacy(const unsigned long *hart_mask); // EID #0x05
+void sbi_remote_sfence_vma_legacy(                              // EID #0x06
+	const unsigned long *hart_mask,
+	unsigned long start,
+	unsigned long size);
+void sbi_remote_sfence_vma_asid_legacy(                         // EID #0x07
+	const unsigned long *hart_mask,
+	unsigned long start,
+	unsigned long size,
+	unsigned long asid);
+void sbi_shutdown_legacy(void);                                 // EID #0x08
+
+// Timer Extension (EID #0x54494D45 "TIME")
+struct sbiret sbi_set_timer(uint64_t stime_value); // FID #0
+
+// IPI Extension (EID #0x735049 "sPI: s-mode IPI")
+struct sbiret sbi_send_ipi( // FID #0
+	unsigned long hart_mask,
+	unsigned long hart_mask_base);
+
+// RFENCE Extension (EID #0x52464E43 "RFNC")
+struct sbiret sbi_remote_fence_i( // FID #0
+	unsigned long hart_mask,
+	unsigned long hart_mask_base);
+struct sbiret sbi_remote_sfence_vma( // FID #1
+	unsigned long hart_mask,
+	unsigned long hart_mask_base,
+	unsigned long start_addr,
+	unsigned long size);
+struct sbiret sbi_remote_sfence_vma_asid( // FID #2
+	unsigned long hart_mask,
+	unsigned long hart_mask_base,
+	unsigned long start_addr,
+	unsigned long size,
+	unsigned long asid);
+struct sbiret sbi_remote_hfence_gvma_vmid( // FID #3
+	unsigned long hart_mask,
+	unsigned long hart_mask_base,
+	unsigned long start_addr,
+	unsigned long size,
+	unsigned long vmid);
+struct sbiret sbi_remote_hfence_gvma( // FID #4
+	unsigned long hart_mask,
+	unsigned long hart_mask_base,
+	unsigned long start_addr,
+	unsigned long size);
+struct sbiret sbi_remote_hfence_vvma_asid( // FID #5
+	unsigned long hart_mask,
+	unsigned long hart_mask_base,
+	unsigned long start_addr,
+	unsigned long size,
+	unsigned long asid);
+struct sbiret sbi_remote_hfence_vvma( // FID #6
+	unsigned long hart_mask,
+	unsigned long hart_mask_base,
+	unsigned long start_addr,
+	unsigned long size);
+
+// Hart State Management Extension (EID #0x48534D "HSM")
+struct sbiret sbi_hart_start( // FID #0
+	unsigned long hartid,
+	unsigned long start_addr,
+	unsigned long opaque);
+struct sbiret sbi_hart_stop(void); // FID #1
+struct sbiret sbi_hart_get_status(unsigned long hartid); // FID #2
+struct sbiret sbi_hart_suspend( // FID #3
+	uint32_t suspend_type,
+	unsigned long resume_addr,
+	unsigned long opaque);
+
+// System Reset Extension (EID #0x53525354 "SRST")
+struct sbiret sbi_system_reset(uint32_t reset_type, uint32_t reset_reason); // FID #0
+
+}
+
+
+#endif	// _SBI_SYSCALLS_H_