forked from Mirrors/opensbi
lib: Create a sbi_ipi_data structure
Create a sbi_ipi_data structure that holds unpacked IPI information. At the same time remove ipi_type from the sbi_scratch struct and use a fixed offset to access it. This structure fits in behind the sbi_scratch structure. This fixes https://github.com/riscv/opensbi/issues/81 Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:

committed by
Anup Patel

parent
007a6b26d9
commit
508a27204c
@@ -31,7 +31,7 @@ static int sbi_ipi_send(struct sbi_scratch *scratch, u32 hartid, u32 event)
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* trigger the interrupt
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*/
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remote_scratch = sbi_hart_id_to_scratch(scratch, hartid);
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atomic_raw_set_bit(event, &remote_scratch->ipi_type);
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atomic_raw_set_bit(event, &sbi_ipi_data_ptr(remote_scratch)->ipi_type);
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mb();
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sbi_platform_ipi_send(plat, hartid);
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if (event != SBI_IPI_EVENT_SOFT)
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@@ -80,7 +80,7 @@ void sbi_ipi_process(struct sbi_scratch *scratch)
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sbi_platform_ipi_clear(plat, hartid);
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do {
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ipi_type = scratch->ipi_type;
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ipi_type = sbi_ipi_data_ptr(scratch)->ipi_type;
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rmb();
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ipi_event = __ffs(ipi_type);
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switch (ipi_event) {
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@@ -97,12 +97,14 @@ void sbi_ipi_process(struct sbi_scratch *scratch)
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sbi_hart_hang();
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break;
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};
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ipi_type = atomic_raw_clear_bit(ipi_event, &scratch->ipi_type);
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ipi_type = atomic_raw_clear_bit(ipi_event, &sbi_ipi_data_ptr(scratch)->ipi_type);
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} while(ipi_type > 0);
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}
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int sbi_ipi_init(struct sbi_scratch *scratch, bool cold_boot)
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{
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sbi_ipi_data_ptr(scratch)->ipi_type = 0x00;
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/* Enable software interrupts */
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csr_set(CSR_MIE, MIP_MSIP);
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