diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi/sbi_domain.h | 6 | ||||
| -rwxr-xr-x | include/sbi/sbi_domain_context.h | 77 |
2 files changed, 83 insertions, 0 deletions
diff --git a/include/sbi/sbi_domain.h b/include/sbi/sbi_domain.h index c88dbac6..4706cfca 100644 --- a/include/sbi/sbi_domain.h +++ b/include/sbi/sbi_domain.h @@ -12,6 +12,7 @@ #include <sbi/sbi_types.h> #include <sbi/sbi_hartmask.h> +#include <sbi/sbi_domain_context.h> struct sbi_scratch; @@ -176,6 +177,8 @@ struct sbi_domain { char name[64]; /** Possible HARTs in this domain */ const struct sbi_hartmask *possible_harts; + /** Contexts for possible HARTs indexed by hartindex */ + struct sbi_context *hartindex_to_context_table[SBI_HARTMASK_MAX_BITS]; /** Array of memory regions terminated by a region with order zero */ struct sbi_domain_memregion *regions; /** HART id of the HART booting this domain */ @@ -200,6 +203,9 @@ extern struct sbi_domain root; /** Get pointer to sbi_domain from HART index */ struct sbi_domain *sbi_hartindex_to_domain(u32 hartindex); +/** Update HART local pointer to point to specified domain */ +void sbi_update_hartindex_to_domain(u32 hartindex, struct sbi_domain *dom); + /** Get pointer to sbi_domain for current HART */ #define sbi_domain_thishart_ptr() \ sbi_hartindex_to_domain(sbi_hartid_to_hartindex(current_hartid())) diff --git a/include/sbi/sbi_domain_context.h b/include/sbi/sbi_domain_context.h new file mode 100755 index 00000000..edba764f --- /dev/null +++ b/include/sbi/sbi_domain_context.h @@ -0,0 +1,77 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) IPADS@SJTU 2023. All rights reserved. + */ + +#ifndef __SBI_DOMAIN_CONTEXT_H__ +#define __SBI_DOMAIN_CONTEXT_H__ + +#include <sbi/sbi_types.h> +#include <sbi/sbi_trap.h> +#include <sbi/sbi_domain.h> + +/** Context representation for a hart within a domain */ +struct sbi_context { + /** Trap-related states such as GPRs, mepc, and mstatus */ + struct sbi_trap_regs regs; + + /** Supervisor status register */ + unsigned long sstatus; + /** Supervisor interrupt enable register */ + unsigned long sie; + /** Supervisor trap vector base address register */ + unsigned long stvec; + /** Supervisor scratch register for temporary storage */ + unsigned long sscratch; + /** Supervisor exception program counter register */ + unsigned long sepc; + /** Supervisor cause register */ + unsigned long scause; + /** Supervisor trap value register */ + unsigned long stval; + /** Supervisor interrupt pending register */ + unsigned long sip; + /** Supervisor address translation and protection register */ + unsigned long satp; + /** Counter-enable register */ + unsigned long scounteren; + /** Supervisor environment configuration register */ + unsigned long senvcfg; + + /** Reference to the owning domain */ + struct sbi_domain *dom; + /** Previous context (caller) to jump to during context exits */ + struct sbi_context *prev_ctx; + /** Is context initialized and runnable */ + bool initialized; +}; + +/** Get the context pointer for a given hart index and domain */ +#define sbi_hartindex_to_domain_context(__hartindex, __d) \ + (__d)->hartindex_to_context_table[__hartindex] + +/** Macro to obtain the current hart's context pointer */ +#define sbi_domain_context_thishart_ptr() \ + sbi_hartindex_to_domain_context( \ + sbi_hartid_to_hartindex(current_hartid()), \ + sbi_domain_thishart_ptr()) + +/** + * Enter a specific domain context synchronously + * @param dom pointer to domain + * + * @return 0 on success and negative error code on failure + */ +int sbi_domain_context_enter(struct sbi_domain *dom); + +/** + * Exit the current domain context, and then return to the caller + * of sbi_domain_context_enter or attempt to start the next domain + * context to be initialized + * + * @return 0 on success and negative error code on failure + */ +int sbi_domain_context_exit(void); + +#endif // __SBI_DOMAIN_CONTEXT_H__ |