f3a398183f
This patch adds the events module (kfd_events.c) and the interrupt handle module for Kaveri (cik_event_interrupt.c). The patch updates the interrupt_is_wanted(), so that it now calls the interrupt isr function specific for the device that received the interrupt. That function(implemented in cik_event_interrupt.c) returns whether this interrupt is of interest to us or not. The patch also updates the interrupt_wq(), so that it now calls the device's specific wq function, which checks the interrupt source and tries to signal relevant events. v2: Increase limit of signal events to 4096 per process Remove bitfields from struct cik_ih_ring_entry Rename radeon_kfd_event_mmap to kfd_event_mmap Add debug prints to allocate_free_slot and allocate_signal_page Make allocate_event_notification_slot return a correct value Add warning prints to create_signal_event Remove error print from IOCTL path Reformatted debug prints in kfd_event_mmap Map correct size (as received from mmap) in kfd_event_mmap v3: Reduce limit of signal events back to 256 per process Fix allocation of kernel memory for signal events Signed-off-by: Andrew Lewycky <Andrew.Lewycky@amd.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/*
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* Copyright 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "kfd_priv.h"
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#include "kfd_events.h"
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#include "cik_int.h"
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static bool cik_event_interrupt_isr(struct kfd_dev *dev,
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const uint32_t *ih_ring_entry)
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{
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unsigned int pasid;
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const struct cik_ih_ring_entry *ihre =
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(const struct cik_ih_ring_entry *)ih_ring_entry;
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pasid = (ihre->ring_id & 0xffff0000) >> 16;
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/* Do not process in ISR, just request it to be forwarded to WQ. */
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return (pasid != 0) &&
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(ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE ||
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ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG);
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}
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static void cik_event_interrupt_wq(struct kfd_dev *dev,
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const uint32_t *ih_ring_entry)
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{
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unsigned int pasid;
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const struct cik_ih_ring_entry *ihre =
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(const struct cik_ih_ring_entry *)ih_ring_entry;
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pasid = (ihre->ring_id & 0xffff0000) >> 16;
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if (pasid == 0)
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return;
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if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE)
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kfd_signal_event_interrupt(pasid, 0, 0);
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else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
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kfd_signal_event_interrupt(pasid, ihre->data & 0xFF, 8);
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}
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const struct kfd_event_interrupt_class event_interrupt_class_cik = {
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.interrupt_isr = cik_event_interrupt_isr,
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.interrupt_wq = cik_event_interrupt_wq,
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};
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