diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/chip.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index b69b85e7a244..0d12dafd619c 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -12935,6 +12935,32 @@ int hfi1_tempsense_rd(struct hfi1_devdata *dd, struct hfi1_temp *temp) return ret; } +/** + * get_int_mask - get 64 bit int mask + * @dd - the devdata + * @i - the csr (relative to CCE_INT_MASK) + * + * Returns the mask with the urgent interrupt mask + * bit clear for kernel receive contexts. + */ +static u64 get_int_mask(struct hfi1_devdata *dd, u32 i) +{ + u64 mask = U64_MAX; /* default to no change */ + + if (i >= (IS_RCVURGENT_START / 64) && i < (IS_RCVURGENT_END / 64)) { + int j = (i - (IS_RCVURGENT_START / 64)) * 64; + int k = !j ? IS_RCVURGENT_START % 64 : 0; + + if (j) + j -= IS_RCVURGENT_START % 64; + /* j = 0..dd->first_dyn_alloc_ctxt - 1,k = 0..63 */ + for (; j < dd->first_dyn_alloc_ctxt && k < 64; j++, k++) + /* convert to bit in mask and clear */ + mask &= ~BIT_ULL(k); + } + return mask; +} + /* ========================================================================= */ /* @@ -12948,9 +12974,12 @@ void set_intr_state(struct hfi1_devdata *dd, u32 enable) * In HFI, the mask needs to be 1 to allow interrupts. */ if (enable) { - /* enable all interrupts */ - for (i = 0; i < CCE_NUM_INT_CSRS; i++) - write_csr(dd, CCE_INT_MASK + (8 * i), ~(u64)0); + /* enable all interrupts but urgent on kernel contexts */ + for (i = 0; i < CCE_NUM_INT_CSRS; i++) { + u64 mask = get_int_mask(dd, i); + + write_csr(dd, CCE_INT_MASK + (8 * i), mask); + } init_qsfp_int(dd); } else { |