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lib: sbi: Use a linked list to track domains

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This removes the compile-time limit on the number of domains. It also
reduces firmware size by about 200 bytes by removing the lookup table.

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Samuel Holland
2024-08-29 12:46:24 -07:00
committed by Anup Patel
parent 792715e4f3
commit 65f04badf7
3 changed files with 19 additions and 35 deletions
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18
include/sbi/sbi_domain.h
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@@ -11,6 +11,7 @@
#define __SBI_DOMAIN_H__
#include <sbi/riscv_locks.h>
#include <sbi/sbi_list.h>
#include <sbi/sbi_types.h>
#include <sbi/sbi_hartmask.h>
#include <sbi/sbi_domain_context.h>
@@ -158,11 +159,10 @@ struct sbi_domain_memregion {
unsigned long flags;
};
/** Maximum number of domains */
#define SBI_DOMAIN_MAX_INDEX 32
/** Representation of OpenSBI domain */
struct sbi_domain {
/** Node in linked list of domains */
struct sbi_dlist node;
/** Logical index of this domain */
u32 index;
/** HARTs assigned to this domain */
@@ -206,16 +206,12 @@ void sbi_update_hartindex_to_domain(u32 hartindex, struct sbi_domain *dom);
#define sbi_domain_thishart_ptr() \
sbi_hartindex_to_domain(sbi_hartid_to_hartindex(current_hartid()))
/** Index to domain table */
extern struct sbi_domain *domidx_to_domain_table[];
/** Get pointer to sbi_domain from index */
#define sbi_index_to_domain(__index) \
domidx_to_domain_table[__index]
/** Head of linked list of domains */
extern struct sbi_dlist domain_list;
/** Iterate over each domain */
#define sbi_domain_for_each(__i, __d) \
for ((__i) = 0; ((__d) = sbi_index_to_domain(__i)); (__i)++)
#define sbi_domain_for_each(__d) \
sbi_list_for_each_entry(__d, &domain_list, node)
/** Iterate over each memory region of a domain */
#define sbi_domain_for_each_memregion(__d, __r) \