diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c b/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c new file mode 100644 index 0000000..629510a --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c @@ -0,0 +1,63 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "kfd_priv.h" +#include "kfd_events.h" +#include "cik_int.h" + +static bool cik_event_interrupt_isr(struct kfd_dev *dev, + const uint32_t *ih_ring_entry) +{ + unsigned int pasid; + const struct cik_ih_ring_entry *ihre = + (const struct cik_ih_ring_entry *)ih_ring_entry; + + pasid = (ihre->ring_id & 0xffff0000) >> 16; + + /* Do not process in ISR, just request it to be forwarded to WQ. */ + return (pasid != 0) && + (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE || + ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG); +} + +static void cik_event_interrupt_wq(struct kfd_dev *dev, + const uint32_t *ih_ring_entry) +{ + unsigned int pasid; + const struct cik_ih_ring_entry *ihre = + (const struct cik_ih_ring_entry *)ih_ring_entry; + + pasid = (ihre->ring_id & 0xffff0000) >> 16; + + if (pasid == 0) + return; + + if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE) + kfd_signal_event_interrupt(pasid, 0, 0); + else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG) + kfd_signal_event_interrupt(pasid, ihre->data & 0xFF, 8); +} + +const struct kfd_event_interrupt_class event_interrupt_class_cik = { + .interrupt_isr = cik_event_interrupt_isr, + .interrupt_wq = cik_event_interrupt_wq, +}; |