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lib: Add IPI extension in SBI

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This patch adds new IPI extension which replaces ipi related
v0.1 extensions. This also adds a new API for ipi sending as trap
handling is not necessary in v0.2 SBI IPI related extensions.

It also modifies the IPI sending code which now accepts hart mask as a value
instead of S-mode virtual address. Thus, the caller should set it to exact hart
mask value everytime.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Atish Patra
2019-11-24 23:33:47 -08:00
committed by Anup Patel
parent 109266397a
commit 9777aeef41
5 changed files with 160 additions and 24 deletions
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5
include/sbi/sbi_ipi.h
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@@ -27,9 +27,8 @@ struct sbi_ipi_data {
unsigned long ipi_type;
};
int sbi_ipi_send_many(struct sbi_scratch *scratch,
struct sbi_trap_info *uptrap,
ulong *pmask, u32 event, void *data);
int sbi_ipi_send_many(struct sbi_scratch *scratch, ulong hmask,
ulong hbase, u32 event, void *data);
void sbi_ipi_clear_smode(struct sbi_scratch *scratch);