137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/*
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* Copyright 2018 Red Hat 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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#define tu102_mc(p) container_of((p), struct tu102_mc, base)
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#include "priv.h"
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struct tu102_mc {
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struct nvkm_mc base;
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spinlock_t lock;
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bool intr;
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u32 mask;
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};
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static void
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tu102_mc_intr_update(struct tu102_mc *mc)
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{
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struct nvkm_device *device = mc->base.subdev.device;
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u32 mask = mc->intr ? mc->mask : 0, i;
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for (i = 0; i < 2; i++) {
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nvkm_wr32(device, 0x000180 + (i * 0x04), ~mask);
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nvkm_wr32(device, 0x000160 + (i * 0x04), mask);
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}
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if (mask & 0x00000200)
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nvkm_wr32(device, 0xb81608, 0x6);
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else
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nvkm_wr32(device, 0xb81610, 0x6);
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}
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static void
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tu102_mc_intr_unarm(struct nvkm_mc *base)
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{
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struct tu102_mc *mc = tu102_mc(base);
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unsigned long flags;
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spin_lock_irqsave(&mc->lock, flags);
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mc->intr = false;
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tu102_mc_intr_update(mc);
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spin_unlock_irqrestore(&mc->lock, flags);
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}
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static void
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tu102_mc_intr_rearm(struct nvkm_mc *base)
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{
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struct tu102_mc *mc = tu102_mc(base);
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unsigned long flags;
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spin_lock_irqsave(&mc->lock, flags);
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mc->intr = true;
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tu102_mc_intr_update(mc);
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spin_unlock_irqrestore(&mc->lock, flags);
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}
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static void
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tu102_mc_intr_mask(struct nvkm_mc *base, u32 mask, u32 intr)
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{
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struct tu102_mc *mc = tu102_mc(base);
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unsigned long flags;
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spin_lock_irqsave(&mc->lock, flags);
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mc->mask = (mc->mask & ~mask) | intr;
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tu102_mc_intr_update(mc);
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spin_unlock_irqrestore(&mc->lock, flags);
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}
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static u32
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tu102_mc_intr_stat(struct nvkm_mc *mc)
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{
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struct nvkm_device *device = mc->subdev.device;
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u32 intr0 = nvkm_rd32(device, 0x000100);
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u32 intr1 = nvkm_rd32(device, 0x000104);
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u32 intr_top = nvkm_rd32(device, 0xb81600);
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/* Turing and above route the MMU fault interrupts via a different
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* interrupt tree with different control registers. For the moment remap
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* them back to the old PMC vector.
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*/
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if (intr_top & 0x00000006)
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intr0 |= 0x00000200;
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return intr0 | intr1;
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}
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static const struct nvkm_mc_func
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tu102_mc = {
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.init = nv50_mc_init,
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.intr = gp100_mc_intr,
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.intr_unarm = tu102_mc_intr_unarm,
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.intr_rearm = tu102_mc_intr_rearm,
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.intr_mask = tu102_mc_intr_mask,
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.intr_stat = tu102_mc_intr_stat,
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.reset = gk104_mc_reset,
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};
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static int
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tu102_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device,
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enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
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{
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struct tu102_mc *mc;
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if (!(mc = kzalloc(sizeof(*mc), GFP_KERNEL)))
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return -ENOMEM;
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nvkm_mc_ctor(func, device, type, inst, &mc->base);
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*pmc = &mc->base;
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spin_lock_init(&mc->lock);
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mc->intr = false;
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mc->mask = 0x7fffffff;
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return 0;
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}
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int
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tu102_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
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{
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return tu102_mc_new_(&tu102_mc, device, type, inst, pmc);
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}
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