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/*
* Copyright 2012 Red Hat 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.
*
* Authors: Ben Skeggs
*/
#include "priv.h"
static void
gf100_ibus_intr_hub(struct nvkm_subdev *ibus, int i)
{
struct nvkm_device *device = ibus->device;
u32 addr = nvkm_rd32(device, 0x122120 + (i * 0x0400));
u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0400));
u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0400));
nvkm_debug(ibus, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
nvkm_mask(device, 0x122128 + (i * 0x0400), 0x00000200, 0x00000000);
}
static void
gf100_ibus_intr_rop(struct nvkm_subdev *ibus, int i)
{
struct nvkm_device *device = ibus->device;
u32 addr = nvkm_rd32(device, 0x124120 + (i * 0x0400));
u32 data = nvkm_rd32(device, 0x124124 + (i * 0x0400));
u32 stat = nvkm_rd32(device, 0x124128 + (i * 0x0400));
nvkm_debug(ibus, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
nvkm_mask(device, 0x124128 + (i * 0x0400), 0x00000200, 0x00000000);
}
static void
gf100_ibus_intr_gpc(struct nvkm_subdev *ibus, int i)
{
struct nvkm_device *device = ibus->device;
u32 addr = nvkm_rd32(device, 0x128120 + (i * 0x0400));
u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0400));
u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0400));
nvkm_debug(ibus, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
nvkm_mask(device, 0x128128 + (i * 0x0400), 0x00000200, 0x00000000);
}
void
gf100_ibus_intr(struct nvkm_subdev *ibus)
{
struct nvkm_device *device = ibus->device;
u32 intr0 = nvkm_rd32(device, 0x121c58);
u32 intr1 = nvkm_rd32(device, 0x121c5c);
u32 hubnr = nvkm_rd32(device, 0x121c70);
u32 ropnr = nvkm_rd32(device, 0x121c74);
u32 gpcnr = nvkm_rd32(device, 0x121c78);
u32 i;
for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
u32 stat = 0x00000100 << i;
if (intr0 & stat) {
gf100_ibus_intr_hub(ibus, i);
intr0 &= ~stat;
}
}
for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) {
u32 stat = 0x00010000 << i;
if (intr0 & stat) {
gf100_ibus_intr_rop(ibus, i);
intr0 &= ~stat;
}
}
for (i = 0; intr1 && i < gpcnr; i++) {
u32 stat = 0x00000001 << i;
if (intr1 & stat) {
gf100_ibus_intr_gpc(ibus, i);
intr1 &= ~stat;
}
}
}
static int
gf100_ibus_init(struct nvkm_subdev *ibus)
{
struct nvkm_device *device = ibus->device;
nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800);
nvkm_wr32(device, 0x12232c, 0x00100064);
nvkm_wr32(device, 0x122330, 0x00100064);
nvkm_wr32(device, 0x122334, 0x00100064);
nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100);
return 0;
}
static const struct nvkm_subdev_func
gf100_ibus = {
.init = gf100_ibus_init,
.intr = gf100_ibus_intr,
};
int
gf100_ibus_new(struct nvkm_device *device, int index,
struct nvkm_subdev **pibus)
{
struct nvkm_subdev *ibus;
if (!(ibus = *pibus = kzalloc(sizeof(*ibus), GFP_KERNEL)))
return -ENOMEM;
nvkm_subdev_ctor(&gf100_ibus, device, index, ibus);
return 0;
}
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