From 4a7a17c1188a878e9f00e4ca8dc724c7cff17606 Mon Sep 17 00:00:00 2001 From: Jack Steiner Date: Wed, 17 Jun 2009 16:28:25 -0700 Subject: gru: support instruction completion interrupts Add support for interrupts generated by GRU instruction completion. Previously, the only interrupts were for TLB misses. The hardware also supports interrupts on instruction completion. This will be supported for instructions issued by the kernel. Signed-off-by: Jack Steiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/sgi-gru/grufault.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) (limited to 'drivers/misc/sgi-gru/grufault.c') diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index f15152165a99..3220e95be6b5 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -166,7 +166,8 @@ static inline struct gru_state *irq_to_gru(int irq) * the GRU, atomic operations must be used to clear bits. */ static void get_clear_fault_map(struct gru_state *gru, - struct gru_tlb_fault_map *map) + struct gru_tlb_fault_map *imap, + struct gru_tlb_fault_map *dmap) { unsigned long i, k; struct gru_tlb_fault_map *tfm; @@ -177,7 +178,11 @@ static void get_clear_fault_map(struct gru_state *gru, k = tfm->fault_bits[i]; if (k) k = xchg(&tfm->fault_bits[i], 0UL); - map->fault_bits[i] = k; + imap->fault_bits[i] = k; + k = tfm->done_bits[i]; + if (k) + k = xchg(&tfm->done_bits[i], 0UL); + dmap->fault_bits[i] = k; } /* @@ -449,7 +454,7 @@ failactive: irqreturn_t gru_intr(int irq, void *dev_id) { struct gru_state *gru; - struct gru_tlb_fault_map map; + struct gru_tlb_fault_map imap, dmap; struct gru_thread_state *gts; struct gru_tlb_fault_handle *tfh = NULL; int cbrnum, ctxnum; @@ -462,11 +467,19 @@ irqreturn_t gru_intr(int irq, void *dev_id) raw_smp_processor_id(), irq); return IRQ_NONE; } - get_clear_fault_map(gru, &map); - gru_dbg(grudev, "irq %d, gru %x, map 0x%lx\n", irq, gru->gs_gid, - map.fault_bits[0]); + get_clear_fault_map(gru, &imap, &dmap); + gru_dbg(grudev, + "irq %d, gid %d, imap %016lx %016lx, dmap %016lx %016lx\n", + irq, gru->gs_gid, dmap.fault_bits[0], dmap.fault_bits[1], + dmap.fault_bits[0], dmap.fault_bits[1]); + + for_each_cbr_in_tfm(cbrnum, dmap.fault_bits) { + complete(gru->gs_blade->bs_async_wq); + gru_dbg(grudev, "gid %d, cbr_done %d, done %d\n", + gru->gs_gid, cbrnum, gru->gs_blade->bs_async_wq->done); + } - for_each_cbr_in_tfm(cbrnum, map.fault_bits) { + for_each_cbr_in_tfm(cbrnum, imap.fault_bits) { tfh = get_tfh_by_index(gru, cbrnum); prefetchw(tfh); /* Helps on hdw, required for emulator */ -- cgit v1.2.3