diff options
| author | Alistair Francis <alistair.francis@wdc.com> | 2019-03-08 22:22:22 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2019-03-10 18:38:21 +0300 |
| commit | 508a27204cbbca0a9430236e56681e5e0d343fb9 (patch) | |
| tree | 6814c923713eab8d1c0a9f8ea7859c1ce63d9507 /lib/sbi_ipi.c | |
| parent | 007a6b26d9a22a9dc49ede12115a8704f634dad0 (diff) | |
| download | opensbi-508a27204cbbca0a9430236e56681e5e0d343fb9.tar.xz | |
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>
Diffstat (limited to 'lib/sbi_ipi.c')
| -rw-r--r-- | lib/sbi_ipi.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/sbi_ipi.c b/lib/sbi_ipi.c index 0e371d7..e0f2a19 100644 --- a/lib/sbi_ipi.c +++ b/lib/sbi_ipi.c @@ -31,7 +31,7 @@ static int sbi_ipi_send(struct sbi_scratch *scratch, u32 hartid, u32 event) * trigger the interrupt */ remote_scratch = sbi_hart_id_to_scratch(scratch, hartid); - atomic_raw_set_bit(event, &remote_scratch->ipi_type); + atomic_raw_set_bit(event, &sbi_ipi_data_ptr(remote_scratch)->ipi_type); mb(); sbi_platform_ipi_send(plat, hartid); if (event != SBI_IPI_EVENT_SOFT) @@ -80,7 +80,7 @@ void sbi_ipi_process(struct sbi_scratch *scratch) sbi_platform_ipi_clear(plat, hartid); do { - ipi_type = scratch->ipi_type; + ipi_type = sbi_ipi_data_ptr(scratch)->ipi_type; rmb(); ipi_event = __ffs(ipi_type); switch (ipi_event) { @@ -97,12 +97,14 @@ void sbi_ipi_process(struct sbi_scratch *scratch) sbi_hart_hang(); break; }; - ipi_type = atomic_raw_clear_bit(ipi_event, &scratch->ipi_type); + ipi_type = atomic_raw_clear_bit(ipi_event, &sbi_ipi_data_ptr(scratch)->ipi_type); } while(ipi_type > 0); } int sbi_ipi_init(struct sbi_scratch *scratch, bool cold_boot) { + sbi_ipi_data_ptr(scratch)->ipi_type = 0x00; + /* Enable software interrupts */ csr_set(CSR_MIE, MIP_MSIP); |