forked from Mirrors/opensbi
lib: sbi: Introduce HART index in sbi_scratch
We introduce HART index and related helper functions in sbi_scratch where HART index is contiguous and each HART index maps to a physical HART id such that 0 <= HART index and HART index < SBI_HARTMASK_MAX_BITS. The HART index to HART id mapping follows the index2id mapping provided by the platform. If the platform does not provide index2id mapping then identity mapping is assumed. Signed-off-by: Anup Patel <apatel@ventanamicro.com>
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@@ -202,12 +202,47 @@ do { \
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= (__type)(__ptr); \
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} while (0)
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/** HART id to scratch table */
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extern struct sbi_scratch *hartid_to_scratch_table[];
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/** Last HART index having a sbi_scratch pointer */
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extern u32 last_hartindex_having_scratch;
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/** Get last HART index having a sbi_scratch pointer */
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#define sbi_scratch_last_hartindex() last_hartindex_having_scratch
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/** Check whether a particular HART index is valid or not */
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#define sbi_hartindex_valid(__hartindex) \
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(((__hartindex) <= sbi_scratch_last_hartindex()) ? true : false)
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/** HART index to HART id table */
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extern u32 hartindex_to_hartid_table[];
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/** Get sbi_scratch from HART index */
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#define sbi_hartindex_to_hartid(__hartindex) \
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({ \
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((__hartindex) <= sbi_scratch_last_hartindex()) ?\
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hartindex_to_hartid_table[__hartindex] : -1U; \
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})
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/** HART index to scratch table */
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extern struct sbi_scratch *hartindex_to_scratch_table[];
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/** Get sbi_scratch from HART index */
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#define sbi_hartindex_to_scratch(__hartindex) \
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({ \
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((__hartindex) <= sbi_scratch_last_hartindex()) ?\
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hartindex_to_scratch_table[__hartindex] : NULL;\
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})
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/**
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* Get logical index for given HART id
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* @param hartid physical HART id
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* @returns value between 0 to SBI_HARTMASK_MAX_BITS upon success and
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* SBI_HARTMASK_MAX_BITS upon failure.
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*/
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u32 sbi_hartid_to_hartindex(u32 hartid);
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/** Get sbi_scratch from HART id */
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#define sbi_hartid_to_scratch(__hartid) \
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hartid_to_scratch_table[__hartid]
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sbi_hartindex_to_scratch(sbi_hartid_to_hartindex(__hartid))
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/** Last HART id having a sbi_scratch pointer */
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extern u32 last_hartid_having_scratch;
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@@ -215,6 +250,10 @@ extern u32 last_hartid_having_scratch;
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/** Get last HART id having a sbi_scratch pointer */
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#define sbi_scratch_last_hartid() last_hartid_having_scratch
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/** Check whether particular HART id is valid or not */
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#define sbi_hartid_valid(__hartid) \
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sbi_hartindex_valid(sbi_hartid_to_hartindex(__hartid))
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#endif
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#endif
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