diff options
Diffstat (limited to 'include/sbi/sbi_scratch.h')
| -rw-r--r-- | include/sbi/sbi_scratch.h | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/include/sbi/sbi_scratch.h b/include/sbi/sbi_scratch.h index f582766..46ea38f 100644 --- a/include/sbi/sbi_scratch.h +++ b/include/sbi/sbi_scratch.h @@ -34,14 +34,8 @@ #define SBI_SCRATCH_TMP0_OFFSET (8 * __SIZEOF_POINTER__) /** Offset of options member in sbi_scratch */ #define SBI_SCRATCH_OPTIONS_OFFSET (9 * __SIZEOF_POINTER__) - -/** sbi_ipi_data is located behind sbi_scratch. This struct is not packed. */ -/** Offset of ipi_type in sbi_ipi_data */ -#define SBI_IPI_DATA_IPI_TYPE_OFFSET (15 * __SIZEOF_POINTER__) - -#define SBI_SCRATCH_TLB_QUEUE_HEAD_OFFSET (16 * __SIZEOF_POINTER__) -#define SBI_SCRATCH_TLB_QUEUE_MEM_OFFSET (SBI_SCRATCH_TLB_QUEUE_HEAD_OFFSET + SBI_TLB_INFO_SIZE) - +/** Offset of extra space in sbi_scratch */ +#define SBI_SCRATCH_EXTRA_SPACE_OFFSET (10 * __SIZEOF_POINTER__) /** Maximum size of sbi_scratch and sbi_ipi_data */ #define SBI_SCRATCH_SIZE (64 * __SIZEOF_POINTER__) @@ -90,17 +84,22 @@ enum sbi_scratch_options { #define sbi_scratch_thishart_arg1_ptr() \ ((void *)(sbi_scratch_thishart_ptr()->next_arg1)) -/** Get pointer to sbi_ipi_data from sbi_scratch */ -#define sbi_ipi_data_ptr(scratch) \ - ((struct sbi_ipi_data *)(void *)scratch + SBI_IPI_DATA_IPI_TYPE_OFFSET) +/** Allocate from extra space in sbi_scratch + * + * @return zero on failure and non-zero (>= SBI_SCRATCH_EXTRA_SPACE_OFFSET) + * on success + */ +unsigned long sbi_scratch_alloc_offset(unsigned long size, const char *owner); + +/** Free-up extra space in sbi_scratch */ +void sbi_scratch_free_offset(unsigned long offset); -/** Get pointer to tlb flush info fifo header from sbi_scratch */ -#define sbi_tlb_fifo_head_ptr(scratch) \ - ((struct sbi_fifo *)(void *)scratch + SBI_SCRATCH_TLB_QUEUE_HEAD_OFFSET) +/** Get pointer from offset in sbi_scratch */ +#define sbi_scratch_offset_ptr(scratch, offset) ((void *)scratch + (offset)) -/** Get pointer to tlb flush info fifo queue address from sbi_scratch */ -#define sbi_tlb_fifo_mem_ptr(scratch) \ - (void *)((void *)scratch + SBI_SCRATCH_TLB_QUEUE_MEM_OFFSET) +/** Get pointer from offset in sbi_scratch for current HART */ +#define sbi_scratch_thishart_offset_ptr(offset) \ + ((void *)sbi_scratch_thishart_ptr() + (offset)) #endif |