diff options
| author | Anup Patel <anup.patel@wdc.com> | 2020-01-15 12:44:10 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-01-22 12:10:44 +0530 |
| commit | 5f762d14f0473dec97ee248e53d29b78be8a833e (patch) | |
| tree | 99d779e04a7be17dd538d67fcd13fc315c8b603b /lib/sbi/sbi_tlb.c | |
| parent | a8b4b83b7fef84b0491f5a897651a30f98d75a9a (diff) | |
lib: Introduce sbi_ipi_event_create/destroy() APIs
This patch introduces sbi_ipi_event_create/destroy() APIs and
struct sbi_ipi_event_ops for creating/destroying IPI events
at runtime based of event operations.
This new APIs will help platform code and utils code to create
custom IPI events which are not part of generic OpenSBI library.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'lib/sbi/sbi_tlb.c')
| -rw-r--r-- | lib/sbi/sbi_tlb.c | 43 |
1 files changed, 31 insertions, 12 deletions
diff --git a/lib/sbi/sbi_tlb.c b/lib/sbi/sbi_tlb.c index c07f4a4..0d9ba19 100644 --- a/lib/sbi/sbi_tlb.c +++ b/lib/sbi/sbi_tlb.c @@ -222,7 +222,7 @@ static void sbi_tlb_fifo_process_count(struct sbi_scratch *scratch, int count) } } -void sbi_tlb_fifo_process(struct sbi_scratch *scratch) +static void sbi_tlb_fifo_process(struct sbi_scratch *scratch) { struct sbi_tlb_info tinfo; struct sbi_fifo *tlb_fifo = @@ -232,7 +232,7 @@ void sbi_tlb_fifo_process(struct sbi_scratch *scratch) sbi_tlb_entry_process(scratch, &tinfo); } -void sbi_tlb_fifo_sync(struct sbi_scratch *scratch) +static void sbi_tlb_fifo_sync(struct sbi_scratch *scratch) { unsigned long *tlb_sync = sbi_scratch_offset_ptr(scratch, tlb_sync_off); @@ -315,11 +315,12 @@ static int sbi_tlb_fifo_update_cb(void *in, void *data) return ret; } -int sbi_tlb_fifo_update(struct sbi_scratch *rscratch, u32 hartid, void *data) +static int sbi_tlb_fifo_update(struct sbi_scratch *scratch, + struct sbi_scratch *remote_scratch, + u32 remote_hartid, void *data) { int ret; struct sbi_fifo *tlb_fifo_r; - struct sbi_scratch *lscratch; struct sbi_tlb_info *tinfo = data; u32 curr_hartid = sbi_current_hartid(); @@ -337,13 +338,12 @@ int sbi_tlb_fifo_update(struct sbi_scratch *rscratch, u32 hartid, void *data) * If the request is to queue a tlb flush entry for itself * then just do a local flush and return; */ - if (hartid == curr_hartid) { + if (remote_hartid == curr_hartid) { sbi_tlb_local_flush(tinfo); return -1; } - lscratch = sbi_hart_id_to_scratch(rscratch, curr_hartid); - tlb_fifo_r = sbi_scratch_offset_ptr(rscratch, tlb_fifo_off); + tlb_fifo_r = sbi_scratch_offset_ptr(remote_scratch, tlb_fifo_off); ret = sbi_fifo_inplace_update(tlb_fifo_r, data, sbi_tlb_fifo_update_cb); if (ret != SBI_FIFO_UNCHANGED) { @@ -359,23 +359,32 @@ int sbi_tlb_fifo_update(struct sbi_scratch *rscratch, u32 hartid, void *data) * TODO: Introduce a wait/wakeup event mechanism to handle * this properly. */ - sbi_tlb_fifo_process_count(lscratch, 1); - sbi_dprintf(rscratch, "hart%d: hart%d tlb fifo full\n", - curr_hartid, hartid); + sbi_tlb_fifo_process_count(scratch, 1); + sbi_dprintf(remote_scratch, "hart%d: hart%d tlb fifo full\n", + curr_hartid, remote_hartid); } return 0; } +static struct sbi_ipi_event_ops tlb_ops = { + .name = "IPI_TLB", + .update = sbi_tlb_fifo_update, + .sync = sbi_tlb_fifo_sync, + .process = sbi_tlb_fifo_process, +}; + +static u32 tlb_event = SBI_IPI_EVENT_MAX; + int sbi_tlb_fifo_request(struct sbi_scratch *scratch, ulong hmask, ulong hbase, struct sbi_tlb_info *tinfo) { - return sbi_ipi_send_many(scratch, hmask, hbase, - SBI_IPI_EVENT_FENCE, tinfo); + return sbi_ipi_send_many(scratch, hmask, hbase, tlb_event, tinfo); } int sbi_tlb_fifo_init(struct sbi_scratch *scratch, bool cold_boot) { + int ret; void *tlb_mem; unsigned long *tlb_sync; struct sbi_fifo *tlb_q; @@ -400,12 +409,22 @@ int sbi_tlb_fifo_init(struct sbi_scratch *scratch, bool cold_boot) sbi_scratch_free_offset(tlb_sync_off); return SBI_ENOMEM; } + ret = sbi_ipi_event_create(&tlb_ops); + if (ret < 0) { + sbi_scratch_free_offset(tlb_fifo_mem_off); + sbi_scratch_free_offset(tlb_fifo_off); + sbi_scratch_free_offset(tlb_sync_off); + return ret; + } + tlb_event = ret; tlb_range_flush_limit = sbi_platform_tlbr_flush_limit(plat); } else { if (!tlb_sync_off || !tlb_fifo_off || !tlb_fifo_mem_off) return SBI_ENOMEM; + if (SBI_IPI_EVENT_MAX <= tlb_event) + return SBI_ENOSPC; } tlb_sync = sbi_scratch_offset_ptr(scratch, tlb_sync_off); |