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-rw-r--r--drivers/misc/sgi-gru/grufault.c27
-rw-r--r--drivers/misc/sgi-gru/grumain.c4
-rw-r--r--drivers/misc/sgi-gru/grutables.h5
3 files changed, 29 insertions, 7 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index f15152165a9..3220e95be6b 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 */
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index afc4c473c79..e38a0f1775f 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -572,8 +572,12 @@ void gru_load_context(struct gru_thread_state *gts)
if (is_kernel_context(gts)) {
cch->unmap_enable = 1;
+ cch->tfm_done_bit_enable = 1;
+ cch->cb_int_enable = 1;
} else {
cch->unmap_enable = 0;
+ cch->tfm_done_bit_enable = 0;
+ cch->cb_int_enable = 0;
asid = gru_load_mm_tracker(gru, gts);
for (i = 0; i < 8; i++) {
cch->asid[i] = asid + i;
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 5f8f3bda2fa..ca81800146f 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -462,6 +462,11 @@ struct gru_blade_state {
struct rw_semaphore bs_kgts_sema; /* lock for kgts */
struct gru_thread_state *bs_kgts; /* GTS for kernel use */
+ /* ---- the following are used for managing kernel async GRU CBRs --- */
+ int bs_async_dsr_bytes; /* DSRs for async */
+ int bs_async_cbrs; /* CBRs AU for async */
+ struct completion *bs_async_wq;
+
/* ---- the following are protected by the bs_lock spinlock ---- */
spinlock_t bs_lock; /* lock used for
stealing contexts */