/*
 * 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 "gf100.h"
#include "ctxgf100.h"
#include "fuc/os.h"

#include <core/client.h>
#include <core/option.h>
#include <core/firmware.h>
#include <subdev/secboot.h>
#include <subdev/fb.h>
#include <subdev/mc.h>
#include <subdev/pmu.h>
#include <subdev/therm.h>
#include <subdev/timer.h>
#include <engine/fifo.h>

#include <nvif/class.h>
#include <nvif/cl9097.h>
#include <nvif/if900d.h>
#include <nvif/unpack.h>

/*******************************************************************************
 * Zero Bandwidth Clear
 ******************************************************************************/

static void
gf100_gr_zbc_clear_color(struct gf100_gr *gr, int zbc)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        if (gr->zbc_color[zbc].format) {
                nvkm_wr32(device, 0x405804, gr->zbc_color[zbc].ds[0]);
                nvkm_wr32(device, 0x405808, gr->zbc_color[zbc].ds[1]);
                nvkm_wr32(device, 0x40580c, gr->zbc_color[zbc].ds[2]);
                nvkm_wr32(device, 0x405810, gr->zbc_color[zbc].ds[3]);
        }
        nvkm_wr32(device, 0x405814, gr->zbc_color[zbc].format);
        nvkm_wr32(device, 0x405820, zbc);
        nvkm_wr32(device, 0x405824, 0x00000004); /* TRIGGER | WRITE | COLOR */
}

static int
gf100_gr_zbc_color_get(struct gf100_gr *gr, int format,
                       const u32 ds[4], const u32 l2[4])
{
        struct nvkm_ltc *ltc = gr->base.engine.subdev.device->ltc;
        int zbc = -ENOSPC, i;

        for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) {
                if (gr->zbc_color[i].format) {
                        if (gr->zbc_color[i].format != format)
                                continue;
                        if (memcmp(gr->zbc_color[i].ds, ds, sizeof(
                                   gr->zbc_color[i].ds)))
                                continue;
                        if (memcmp(gr->zbc_color[i].l2, l2, sizeof(
                                   gr->zbc_color[i].l2))) {
                                WARN_ON(1);
                                return -EINVAL;
                        }
                        return i;
                } else {
                        zbc = (zbc < 0) ? i : zbc;
                }
        }

        if (zbc < 0)
                return zbc;

        memcpy(gr->zbc_color[zbc].ds, ds, sizeof(gr->zbc_color[zbc].ds));
        memcpy(gr->zbc_color[zbc].l2, l2, sizeof(gr->zbc_color[zbc].l2));
        gr->zbc_color[zbc].format = format;
        nvkm_ltc_zbc_color_get(ltc, zbc, l2);
        gr->func->zbc->clear_color(gr, zbc);
        return zbc;
}

static void
gf100_gr_zbc_clear_depth(struct gf100_gr *gr, int zbc)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        if (gr->zbc_depth[zbc].format)
                nvkm_wr32(device, 0x405818, gr->zbc_depth[zbc].ds);
        nvkm_wr32(device, 0x40581c, gr->zbc_depth[zbc].format);
        nvkm_wr32(device, 0x405820, zbc);
        nvkm_wr32(device, 0x405824, 0x00000005); /* TRIGGER | WRITE | DEPTH */
}

static int
gf100_gr_zbc_depth_get(struct gf100_gr *gr, int format,
                       const u32 ds, const u32 l2)
{
        struct nvkm_ltc *ltc = gr->base.engine.subdev.device->ltc;
        int zbc = -ENOSPC, i;

        for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) {
                if (gr->zbc_depth[i].format) {
                        if (gr->zbc_depth[i].format != format)
                                continue;
                        if (gr->zbc_depth[i].ds != ds)
                                continue;
                        if (gr->zbc_depth[i].l2 != l2) {
                                WARN_ON(1);
                                return -EINVAL;
                        }
                        return i;
                } else {
                        zbc = (zbc < 0) ? i : zbc;
                }
        }

        if (zbc < 0)
                return zbc;

        gr->zbc_depth[zbc].format = format;
        gr->zbc_depth[zbc].ds = ds;
        gr->zbc_depth[zbc].l2 = l2;
        nvkm_ltc_zbc_depth_get(ltc, zbc, l2);
        gr->func->zbc->clear_depth(gr, zbc);
        return zbc;
}

const struct gf100_gr_func_zbc
gf100_gr_zbc = {
        .clear_color = gf100_gr_zbc_clear_color,
        .clear_depth = gf100_gr_zbc_clear_depth,
};

/*******************************************************************************
 * Graphics object classes
 ******************************************************************************/
#define gf100_gr_object(p) container_of((p), struct gf100_gr_object, object)

struct gf100_gr_object {
        struct nvkm_object object;
        struct gf100_gr_chan *chan;
};

static int
gf100_fermi_mthd_zbc_color(struct nvkm_object *object, void *data, u32 size)
{
        struct gf100_gr *gr = gf100_gr(nvkm_gr(object->engine));
        union {
                struct fermi_a_zbc_color_v0 v0;
        } *args = data;
        int ret = -ENOSYS;

        if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
                switch (args->v0.format) {
                case FERMI_A_ZBC_COLOR_V0_FMT_ZERO:
                case FERMI_A_ZBC_COLOR_V0_FMT_UNORM_ONE:
                case FERMI_A_ZBC_COLOR_V0_FMT_RF32_GF32_BF32_AF32:
                case FERMI_A_ZBC_COLOR_V0_FMT_R16_G16_B16_A16:
                case FERMI_A_ZBC_COLOR_V0_FMT_RN16_GN16_BN16_AN16:
                case FERMI_A_ZBC_COLOR_V0_FMT_RS16_GS16_BS16_AS16:
                case FERMI_A_ZBC_COLOR_V0_FMT_RU16_GU16_BU16_AU16:
                case FERMI_A_ZBC_COLOR_V0_FMT_RF16_GF16_BF16_AF16:
                case FERMI_A_ZBC_COLOR_V0_FMT_A8R8G8B8:
                case FERMI_A_ZBC_COLOR_V0_FMT_A8RL8GL8BL8:
                case FERMI_A_ZBC_COLOR_V0_FMT_A2B10G10R10:
                case FERMI_A_ZBC_COLOR_V0_FMT_AU2BU10GU10RU10:
                case FERMI_A_ZBC_COLOR_V0_FMT_A8B8G8R8:
                case FERMI_A_ZBC_COLOR_V0_FMT_A8BL8GL8RL8:
                case FERMI_A_ZBC_COLOR_V0_FMT_AN8BN8GN8RN8:
                case FERMI_A_ZBC_COLOR_V0_FMT_AS8BS8GS8RS8:
                case FERMI_A_ZBC_COLOR_V0_FMT_AU8BU8GU8RU8:
                case FERMI_A_ZBC_COLOR_V0_FMT_A2R10G10B10:
                case FERMI_A_ZBC_COLOR_V0_FMT_BF10GF11RF11:
                        ret = gf100_gr_zbc_color_get(gr, args->v0.format,
                                                           args->v0.ds,
                                                           args->v0.l2);
                        if (ret >= 0) {
                                args->v0.index = ret;
                                return 0;
                        }
                        break;
                default:
                        return -EINVAL;
                }
        }

        return ret;
}

static int
gf100_fermi_mthd_zbc_depth(struct nvkm_object *object, void *data, u32 size)
{
        struct gf100_gr *gr = gf100_gr(nvkm_gr(object->engine));
        union {
                struct fermi_a_zbc_depth_v0 v0;
        } *args = data;
        int ret = -ENOSYS;

        if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
                switch (args->v0.format) {
                case FERMI_A_ZBC_DEPTH_V0_FMT_FP32:
                        ret = gf100_gr_zbc_depth_get(gr, args->v0.format,
                                                           args->v0.ds,
                                                           args->v0.l2);
                        return (ret >= 0) ? 0 : -ENOSPC;
                default:
                        return -EINVAL;
                }
        }

        return ret;
}

static int
gf100_fermi_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
{
        nvif_ioctl(object, "fermi mthd %08x\n", mthd);
        switch (mthd) {
        case FERMI_A_ZBC_COLOR:
                return gf100_fermi_mthd_zbc_color(object, data, size);
        case FERMI_A_ZBC_DEPTH:
                return gf100_fermi_mthd_zbc_depth(object, data, size);
        default:
                break;
        }
        return -EINVAL;
}

const struct nvkm_object_func
gf100_fermi = {
        .mthd = gf100_fermi_mthd,
};

static void
gf100_gr_mthd_set_shader_exceptions(struct nvkm_device *device, u32 data)
{
        nvkm_wr32(device, 0x419e44, data ? 0xffffffff : 0x00000000);
        nvkm_wr32(device, 0x419e4c, data ? 0xffffffff : 0x00000000);
}

static bool
gf100_gr_mthd_sw(struct nvkm_device *device, u16 class, u32 mthd, u32 data)
{
        switch (class & 0x00ff) {
        case 0x97:
        case 0xc0:
                switch (mthd) {
                case 0x1528:
                        gf100_gr_mthd_set_shader_exceptions(device, data);
                        return true;
                default:
                        break;
                }
                break;
        default:
                break;
        }
        return false;
}

static const struct nvkm_object_func
gf100_gr_object_func = {
};

static int
gf100_gr_object_new(const struct nvkm_oclass *oclass, void *data, u32 size,
                    struct nvkm_object **pobject)
{
        struct gf100_gr_chan *chan = gf100_gr_chan(oclass->parent);
        struct gf100_gr_object *object;

        if (!(object = kzalloc(sizeof(*object), GFP_KERNEL)))
                return -ENOMEM;
        *pobject = &object->object;

        nvkm_object_ctor(oclass->base.func ? oclass->base.func :
                         &gf100_gr_object_func, oclass, &object->object);
        object->chan = chan;
        return 0;
}

static int
gf100_gr_object_get(struct nvkm_gr *base, int index, struct nvkm_sclass *sclass)
{
        struct gf100_gr *gr = gf100_gr(base);
        int c = 0;

        while (gr->func->sclass[c].oclass) {
                if (c++ == index) {
                        *sclass = gr->func->sclass[index];
                        sclass->ctor = gf100_gr_object_new;
                        return index;
                }
        }

        return c;
}

/*******************************************************************************
 * PGRAPH context
 ******************************************************************************/

static int
gf100_gr_chan_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
                   int align, struct nvkm_gpuobj **pgpuobj)
{
        struct gf100_gr_chan *chan = gf100_gr_chan(object);
        struct gf100_gr *gr = chan->gr;
        int ret, i;

        ret = nvkm_gpuobj_new(gr->base.engine.subdev.device, gr->size,
                              align, false, parent, pgpuobj);
        if (ret)
                return ret;

        nvkm_kmap(*pgpuobj);
        for (i = 0; i < gr->size; i += 4)
                nvkm_wo32(*pgpuobj, i, gr->data[i / 4]);

        if (!gr->firmware) {
                nvkm_wo32(*pgpuobj, 0x00, chan->mmio_nr / 2);
                nvkm_wo32(*pgpuobj, 0x04, chan->mmio_vma->addr >> 8);
        } else {
                nvkm_wo32(*pgpuobj, 0xf4, 0);
                nvkm_wo32(*pgpuobj, 0xf8, 0);
                nvkm_wo32(*pgpuobj, 0x10, chan->mmio_nr / 2);
                nvkm_wo32(*pgpuobj, 0x14, lower_32_bits(chan->mmio_vma->addr));
                nvkm_wo32(*pgpuobj, 0x18, upper_32_bits(chan->mmio_vma->addr));
                nvkm_wo32(*pgpuobj, 0x1c, 1);
                nvkm_wo32(*pgpuobj, 0x20, 0);
                nvkm_wo32(*pgpuobj, 0x28, 0);
                nvkm_wo32(*pgpuobj, 0x2c, 0);
        }
        nvkm_done(*pgpuobj);
        return 0;
}

static void *
gf100_gr_chan_dtor(struct nvkm_object *object)
{
        struct gf100_gr_chan *chan = gf100_gr_chan(object);
        int i;

        for (i = 0; i < ARRAY_SIZE(chan->data); i++) {
                nvkm_vmm_put(chan->vmm, &chan->data[i].vma);
                nvkm_memory_unref(&chan->data[i].mem);
        }

        nvkm_vmm_put(chan->vmm, &chan->mmio_vma);
        nvkm_memory_unref(&chan->mmio);
        nvkm_vmm_unref(&chan->vmm);
        return chan;
}

static const struct nvkm_object_func
gf100_gr_chan = {
        .dtor = gf100_gr_chan_dtor,
        .bind = gf100_gr_chan_bind,
};

static int
gf100_gr_chan_new(struct nvkm_gr *base, struct nvkm_fifo_chan *fifoch,
                  const struct nvkm_oclass *oclass,
                  struct nvkm_object **pobject)
{
        struct gf100_gr *gr = gf100_gr(base);
        struct gf100_gr_data *data = gr->mmio_data;
        struct gf100_gr_mmio *mmio = gr->mmio_list;
        struct gf100_gr_chan *chan;
        struct gf100_vmm_map_v0 args = { .priv = 1 };
        struct nvkm_device *device = gr->base.engine.subdev.device;
        int ret, i;

        if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
                return -ENOMEM;
        nvkm_object_ctor(&gf100_gr_chan, oclass, &chan->object);
        chan->gr = gr;
        chan->vmm = nvkm_vmm_ref(fifoch->vmm);
        *pobject = &chan->object;

        /* allocate memory for a "mmio list" buffer that's used by the HUB
         * fuc to modify some per-context register settings on first load
         * of the context.
         */
        ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x1000, 0x100,
                              false, &chan->mmio);
        if (ret)
                return ret;

        ret = nvkm_vmm_get(fifoch->vmm, 12, 0x1000, &chan->mmio_vma);
        if (ret)
                return ret;

        ret = nvkm_memory_map(chan->mmio, 0, fifoch->vmm,
                              chan->mmio_vma, &args, sizeof(args));
        if (ret)
                return ret;

        /* allocate buffers referenced by mmio list */
        for (i = 0; data->size && i < ARRAY_SIZE(gr->mmio_data); i++) {
                ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST,
                                      data->size, data->align, false,
                                      &chan->data[i].mem);
                if (ret)
                        return ret;

                ret = nvkm_vmm_get(fifoch->vmm, 12,
                                   nvkm_memory_size(chan->data[i].mem),
                                   &chan->data[i].vma);
                if (ret)
                        return ret;

                args.priv = data->priv;

                ret = nvkm_memory_map(chan->data[i].mem, 0, chan->vmm,
                                      chan->data[i].vma, &args, sizeof(args));
                if (ret)
                        return ret;

                data++;
        }

        /* finally, fill in the mmio list and point the context at it */
        nvkm_kmap(chan->mmio);
        for (i = 0; mmio->addr && i < ARRAY_SIZE(gr->mmio_list); i++) {
                u32 addr = mmio->addr;
                u32 data = mmio->data;

                if (mmio->buffer >= 0) {
                        u64 info = chan->data[mmio->buffer].vma->addr;
                        data |= info >> mmio->shift;
                }

                nvkm_wo32(chan->mmio, chan->mmio_nr++ * 4, addr);
                nvkm_wo32(chan->mmio, chan->mmio_nr++ * 4, data);
                mmio++;
        }
        nvkm_done(chan->mmio);
        return 0;
}

/*******************************************************************************
 * PGRAPH register lists
 ******************************************************************************/

const struct gf100_gr_init
gf100_gr_init_main_0[] = {
        { 0x400080,   1, 0x04, 0x003083c2 },
        { 0x400088,   1, 0x04, 0x00006fe7 },
        { 0x40008c,   1, 0x04, 0x00000000 },
        { 0x400090,   1, 0x04, 0x00000030 },
        { 0x40013c,   1, 0x04, 0x013901f7 },
        { 0x400140,   1, 0x04, 0x00000100 },
        { 0x400144,   1, 0x04, 0x00000000 },
        { 0x400148,   1, 0x04, 0x00000110 },
        { 0x400138,   1, 0x04, 0x00000000 },
        { 0x400130,   2, 0x04, 0x00000000 },
        { 0x400124,   1, 0x04, 0x00000002 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_fe_0[] = {
        { 0x40415c,   1, 0x04, 0x00000000 },
        { 0x404170,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_pri_0[] = {
        { 0x404488,   2, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_rstr2d_0[] = {
        { 0x407808,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_pd_0[] = {
        { 0x406024,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_ds_0[] = {
        { 0x405844,   1, 0x04, 0x00ffffff },
        { 0x405850,   1, 0x04, 0x00000000 },
        { 0x405908,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_scc_0[] = {
        { 0x40803c,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_prop_0[] = {
        { 0x4184a0,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_gpc_unk_0[] = {
        { 0x418604,   1, 0x04, 0x00000000 },
        { 0x418680,   1, 0x04, 0x00000000 },
        { 0x418714,   1, 0x04, 0x80000000 },
        { 0x418384,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_setup_0[] = {
        { 0x418814,   3, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_crstr_0[] = {
        { 0x418b04,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_setup_1[] = {
        { 0x4188c8,   1, 0x04, 0x80000000 },
        { 0x4188cc,   1, 0x04, 0x00000000 },
        { 0x4188d0,   1, 0x04, 0x00010000 },
        { 0x4188d4,   1, 0x04, 0x00000001 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_zcull_0[] = {
        { 0x418910,   1, 0x04, 0x00010001 },
        { 0x418914,   1, 0x04, 0x00000301 },
        { 0x418918,   1, 0x04, 0x00800000 },
        { 0x418980,   1, 0x04, 0x77777770 },
        { 0x418984,   3, 0x04, 0x77777777 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_gpm_0[] = {
        { 0x418c04,   1, 0x04, 0x00000000 },
        { 0x418c88,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_gpc_unk_1[] = {
        { 0x418d00,   1, 0x04, 0x00000000 },
        { 0x418f08,   1, 0x04, 0x00000000 },
        { 0x418e00,   1, 0x04, 0x00000050 },
        { 0x418e08,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_gcc_0[] = {
        { 0x41900c,   1, 0x04, 0x00000000 },
        { 0x419018,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_tpccs_0[] = {
        { 0x419d08,   2, 0x04, 0x00000000 },
        { 0x419d10,   1, 0x04, 0x00000014 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_tex_0[] = {
        { 0x419ab0,   1, 0x04, 0x00000000 },
        { 0x419ab8,   1, 0x04, 0x000000e7 },
        { 0x419abc,   2, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_pe_0[] = {
        { 0x41980c,   3, 0x04, 0x00000000 },
        { 0x419844,   1, 0x04, 0x00000000 },
        { 0x41984c,   1, 0x04, 0x00005bc5 },
        { 0x419850,   4, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_l1c_0[] = {
        { 0x419c98,   1, 0x04, 0x00000000 },
        { 0x419ca8,   1, 0x04, 0x80000000 },
        { 0x419cb4,   1, 0x04, 0x00000000 },
        { 0x419cb8,   1, 0x04, 0x00008bf4 },
        { 0x419cbc,   1, 0x04, 0x28137606 },
        { 0x419cc0,   2, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_wwdx_0[] = {
        { 0x419bd4,   1, 0x04, 0x00800000 },
        { 0x419bdc,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_tpccs_1[] = {
        { 0x419d2c,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_mpc_0[] = {
        { 0x419c0c,   1, 0x04, 0x00000000 },
        {}
};

static const struct gf100_gr_init
gf100_gr_init_sm_0[] = {
        { 0x419e00,   1, 0x04, 0x00000000 },
        { 0x419ea0,   1, 0x04, 0x00000000 },
        { 0x419ea4,   1, 0x04, 0x00000100 },
        { 0x419ea8,   1, 0x04, 0x00001100 },
        { 0x419eac,   1, 0x04, 0x11100702 },
        { 0x419eb0,   1, 0x04, 0x00000003 },
        { 0x419eb4,   4, 0x04, 0x00000000 },
        { 0x419ec8,   1, 0x04, 0x06060618 },
        { 0x419ed0,   1, 0x04, 0x0eff0e38 },
        { 0x419ed4,   1, 0x04, 0x011104f1 },
        { 0x419edc,   1, 0x04, 0x00000000 },
        { 0x419f00,   1, 0x04, 0x00000000 },
        { 0x419f2c,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_be_0[] = {
        { 0x40880c,   1, 0x04, 0x00000000 },
        { 0x408910,   9, 0x04, 0x00000000 },
        { 0x408950,   1, 0x04, 0x00000000 },
        { 0x408954,   1, 0x04, 0x0000ffff },
        { 0x408984,   1, 0x04, 0x00000000 },
        { 0x408988,   1, 0x04, 0x08040201 },
        { 0x40898c,   1, 0x04, 0x80402010 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_fe_1[] = {
        { 0x4040f0,   1, 0x04, 0x00000000 },
        {}
};

const struct gf100_gr_init
gf100_gr_init_pe_1[] = {
        { 0x419880,   1, 0x04, 0x00000002 },
        {}
};

static const struct gf100_gr_pack
gf100_gr_pack_mmio[] = {
        { gf100_gr_init_main_0 },
        { gf100_gr_init_fe_0 },
        { gf100_gr_init_pri_0 },
        { gf100_gr_init_rstr2d_0 },
        { gf100_gr_init_pd_0 },
        { gf100_gr_init_ds_0 },
        { gf100_gr_init_scc_0 },
        { gf100_gr_init_prop_0 },
        { gf100_gr_init_gpc_unk_0 },
        { gf100_gr_init_setup_0 },
        { gf100_gr_init_crstr_0 },
        { gf100_gr_init_setup_1 },
        { gf100_gr_init_zcull_0 },
        { gf100_gr_init_gpm_0 },
        { gf100_gr_init_gpc_unk_1 },
        { gf100_gr_init_gcc_0 },
        { gf100_gr_init_tpccs_0 },
        { gf100_gr_init_tex_0 },
        { gf100_gr_init_pe_0 },
        { gf100_gr_init_l1c_0 },
        { gf100_gr_init_wwdx_0 },
        { gf100_gr_init_tpccs_1 },
        { gf100_gr_init_mpc_0 },
        { gf100_gr_init_sm_0 },
        { gf100_gr_init_be_0 },
        { gf100_gr_init_fe_1 },
        { gf100_gr_init_pe_1 },
        {}
};

/*******************************************************************************
 * PGRAPH engine/subdev functions
 ******************************************************************************/

static bool
gf100_gr_chsw_load(struct nvkm_gr *base)
{
        struct gf100_gr *gr = gf100_gr(base);
        if (!gr->firmware) {
                u32 trace = nvkm_rd32(gr->base.engine.subdev.device, 0x40981c);
                if (trace & 0x00000040)
                        return true;
        } else {
                u32 mthd = nvkm_rd32(gr->base.engine.subdev.device, 0x409808);
                if (mthd & 0x00080000)
                        return true;
        }
        return false;
}

int
gf100_gr_rops(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        return (nvkm_rd32(device, 0x409604) & 0x001f0000) >> 16;
}

void
gf100_gr_zbc_init(struct gf100_gr *gr)
{
        const u32  zero[] = { 0x00000000, 0x00000000, 0x00000000, 0x00000000,
                              0x00000000, 0x00000000, 0x00000000, 0x00000000 };
        const u32   one[] = { 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000,
                              0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff };
        const u32 f32_0[] = { 0x00000000, 0x00000000, 0x00000000, 0x00000000,
                              0x00000000, 0x00000000, 0x00000000, 0x00000000 };
        const u32 f32_1[] = { 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000,
                              0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000 };
        struct nvkm_ltc *ltc = gr->base.engine.subdev.device->ltc;
        int index, c = ltc->zbc_min, d = ltc->zbc_min, s = ltc->zbc_min;

        if (!gr->zbc_color[0].format) {
                gf100_gr_zbc_color_get(gr, 1,  & zero[0],   &zero[4]); c++;
                gf100_gr_zbc_color_get(gr, 2,  &  one[0],    &one[4]); c++;
                gf100_gr_zbc_color_get(gr, 4,  &f32_0[0],  &f32_0[4]); c++;
                gf100_gr_zbc_color_get(gr, 4,  &f32_1[0],  &f32_1[4]); c++;
                gf100_gr_zbc_depth_get(gr, 1, 0x00000000, 0x00000000); d++;
                gf100_gr_zbc_depth_get(gr, 1, 0x3f800000, 0x3f800000); d++;
                if (gr->func->zbc->stencil_get) {
                        gr->func->zbc->stencil_get(gr, 1, 0x00, 0x00); s++;
                        gr->func->zbc->stencil_get(gr, 1, 0x01, 0x01); s++;
                        gr->func->zbc->stencil_get(gr, 1, 0xff, 0xff); s++;
                }
        }

        for (index = c; index <= ltc->zbc_max; index++)
                gr->func->zbc->clear_color(gr, index);
        for (index = d; index <= ltc->zbc_max; index++)
                gr->func->zbc->clear_depth(gr, index);

        if (gr->func->zbc->clear_stencil) {
                for (index = s; index <= ltc->zbc_max; index++)
                        gr->func->zbc->clear_stencil(gr, index);
        }
}

/**
 * Wait until GR goes idle. GR is considered idle if it is disabled by the
 * MC (0x200) register, or GR is not busy and a context switch is not in
 * progress.
 */
int
gf100_gr_wait_idle(struct gf100_gr *gr)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        unsigned long end_jiffies = jiffies + msecs_to_jiffies(2000);
        bool gr_enabled, ctxsw_active, gr_busy;

        do {
                /*
                 * required to make sure FIFO_ENGINE_STATUS (0x2640) is
                 * up-to-date
                 */
                nvkm_rd32(device, 0x400700);

                gr_enabled = nvkm_rd32(device, 0x200) & 0x1000;
                ctxsw_active = nvkm_rd32(device, 0x2640) & 0x8000;
                gr_busy = nvkm_rd32(device, 0x40060c) & 0x1;

                if (!gr_enabled || (!gr_busy && !ctxsw_active))
                        return 0;
        } while (time_before(jiffies, end_jiffies));

        nvkm_error(subdev,
                   "wait for idle timeout (en: %d, ctxsw: %d, busy: %d)\n",
                   gr_enabled, ctxsw_active, gr_busy);
        return -EAGAIN;
}

void
gf100_gr_mmio(struct gf100_gr *gr, const struct gf100_gr_pack *p)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        const struct gf100_gr_pack *pack;
        const struct gf100_gr_init *init;

        pack_for_each_init(init, pack, p) {
                u32 next = init->addr + init->count * init->pitch;
                u32 addr = init->addr;
                while (addr < next) {
                        nvkm_wr32(device, addr, init->data);
                        addr += init->pitch;
                }
        }
}

void
gf100_gr_icmd(struct gf100_gr *gr, const struct gf100_gr_pack *p)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        const struct gf100_gr_pack *pack;
        const struct gf100_gr_init *init;
        u32 data = 0;

        nvkm_wr32(device, 0x400208, 0x80000000);

        pack_for_each_init(init, pack, p) {
                u32 next = init->addr + init->count * init->pitch;
                u32 addr = init->addr;

                if ((pack == p && init == p->init) || data != init->data) {
                        nvkm_wr32(device, 0x400204, init->data);
                        data = init->data;
                }

                while (addr < next) {
                        nvkm_wr32(device, 0x400200, addr);
                        /**
                         * Wait for GR to go idle after submitting a
                         * GO_IDLE bundle
                         */
                        if ((addr & 0xffff) == 0xe100)
                                gf100_gr_wait_idle(gr);
                        nvkm_msec(device, 2000,
                                if (!(nvkm_rd32(device, 0x400700) & 0x00000004))
                                        break;
                        );
                        addr += init->pitch;
                }
        }

        nvkm_wr32(device, 0x400208, 0x00000000);
}

void
gf100_gr_mthd(struct gf100_gr *gr, const struct gf100_gr_pack *p)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        const struct gf100_gr_pack *pack;
        const struct gf100_gr_init *init;
        u32 data = 0;

        pack_for_each_init(init, pack, p) {
                u32 ctrl = 0x80000000 | pack->type;
                u32 next = init->addr + init->count * init->pitch;
                u32 addr = init->addr;

                if ((pack == p && init == p->init) || data != init->data) {
                        nvkm_wr32(device, 0x40448c, init->data);
                        data = init->data;
                }

                while (addr < next) {
                        nvkm_wr32(device, 0x404488, ctrl | (addr << 14));
                        addr += init->pitch;
                }
        }
}

u64
gf100_gr_units(struct nvkm_gr *base)
{
        struct gf100_gr *gr = gf100_gr(base);
        u64 cfg;

        cfg  = (u32)gr->gpc_nr;
        cfg |= (u32)gr->tpc_total << 8;
        cfg |= (u64)gr->rop_nr << 32;

        return cfg;
}

static const struct nvkm_bitfield gf100_dispatch_error[] = {
        { 0x00000001, "INJECTED_BUNDLE_ERROR" },
        { 0x00000002, "CLASS_SUBCH_MISMATCH" },
        { 0x00000004, "SUBCHSW_DURING_NOTIFY" },
        {}
};

static const struct nvkm_bitfield gf100_m2mf_error[] = {
        { 0x00000001, "PUSH_TOO_MUCH_DATA" },
        { 0x00000002, "PUSH_NOT_ENOUGH_DATA" },
        {}
};

static const struct nvkm_bitfield gf100_unk6_error[] = {
        { 0x00000001, "TEMP_TOO_SMALL" },
        {}
};

static const struct nvkm_bitfield gf100_ccache_error[] = {
        { 0x00000001, "INTR" },
        { 0x00000002, "LDCONST_OOB" },
        {}
};

static const struct nvkm_bitfield gf100_macro_error[] = {
        { 0x00000001, "TOO_FEW_PARAMS" },
        { 0x00000002, "TOO_MANY_PARAMS" },
        { 0x00000004, "ILLEGAL_OPCODE" },
        { 0x00000008, "DOUBLE_BRANCH" },
        { 0x00000010, "WATCHDOG" },
        {}
};

static const struct nvkm_bitfield gk104_sked_error[] = {
        { 0x00000040, "CTA_RESUME" },
        { 0x00000080, "CONSTANT_BUFFER_SIZE" },
        { 0x00000200, "LOCAL_MEMORY_SIZE_POS" },
        { 0x00000400, "LOCAL_MEMORY_SIZE_NEG" },
        { 0x00000800, "WARP_CSTACK_SIZE" },
        { 0x00001000, "TOTAL_TEMP_SIZE" },
        { 0x00002000, "REGISTER_COUNT" },
        { 0x00040000, "TOTAL_THREADS" },
        { 0x00100000, "PROGRAM_OFFSET" },
        { 0x00200000, "SHARED_MEMORY_SIZE" },
        { 0x00800000, "CTA_THREAD_DIMENSION_ZERO" },
        { 0x01000000, "MEMORY_WINDOW_OVERLAP" },
        { 0x02000000, "SHARED_CONFIG_TOO_SMALL" },
        { 0x04000000, "TOTAL_REGISTER_COUNT" },
        {}
};

static const struct nvkm_bitfield gf100_gpc_rop_error[] = {
        { 0x00000002, "RT_PITCH_OVERRUN" },
        { 0x00000010, "RT_WIDTH_OVERRUN" },
        { 0x00000020, "RT_HEIGHT_OVERRUN" },
        { 0x00000080, "ZETA_STORAGE_TYPE_MISMATCH" },
        { 0x00000100, "RT_STORAGE_TYPE_MISMATCH" },
        { 0x00000400, "RT_LINEAR_MISMATCH" },
        {}
};

static void
gf100_gr_trap_gpc_rop(struct gf100_gr *gr, int gpc)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        char error[128];
        u32 trap[4];

        trap[0] = nvkm_rd32(device, GPC_UNIT(gpc, 0x0420)) & 0x3fffffff;
        trap[1] = nvkm_rd32(device, GPC_UNIT(gpc, 0x0434));
        trap[2] = nvkm_rd32(device, GPC_UNIT(gpc, 0x0438));
        trap[3] = nvkm_rd32(device, GPC_UNIT(gpc, 0x043c));

        nvkm_snprintbf(error, sizeof(error), gf100_gpc_rop_error, trap[0]);

        nvkm_error(subdev, "GPC%d/PROP trap: %08x [%s] x = %u, y = %u, "
                           "format = %x, storage type = %x\n",
                   gpc, trap[0], error, trap[1] & 0xffff, trap[1] >> 16,
                   (trap[2] >> 8) & 0x3f, trap[3] & 0xff);
        nvkm_wr32(device, GPC_UNIT(gpc, 0x0420), 0xc0000000);
}

const struct nvkm_enum gf100_mp_warp_error[] = {
        { 0x01, "STACK_ERROR" },
        { 0x02, "API_STACK_ERROR" },
        { 0x03, "RET_EMPTY_STACK_ERROR" },
        { 0x04, "PC_WRAP" },
        { 0x05, "MISALIGNED_PC" },
        { 0x06, "PC_OVERFLOW" },
        { 0x07, "MISALIGNED_IMMC_ADDR" },
        { 0x08, "MISALIGNED_REG" },
        { 0x09, "ILLEGAL_INSTR_ENCODING" },
        { 0x0a, "ILLEGAL_SPH_INSTR_COMBO" },

        { 0x0b, "ILLEGAL_INSTR_PARAM" },
        { 0x0c, "INVALID_CONST_ADDR" },
        { 0x0d, "OOR_REG" },
        { 0x0e, "OOR_ADDR" },
        { 0x0f, "MISALIGNED_ADDR" },
        { 0x10, "INVALID_ADDR_SPACE" },
        { 0x11, "ILLEGAL_INSTR_PARAM2" },
        { 0x12, "INVALID_CONST_ADDR_LDC" },
        { 0x13, "GEOMETRY_SM_ERROR" },
        { 0x14, "DIVERGENT" },
        { 0x15, "WARP_EXIT" },
        {}
};

const struct nvkm_bitfield gf100_mp_global_error[] = {
        { 0x00000001, "SM_TO_SM_FAULT" },
        { 0x00000002, "L1_ERROR" },
        { 0x00000004, "MULTIPLE_WARP_ERRORS" },
        { 0x00000008, "PHYSICAL_STACK_OVERFLOW" },
        { 0x00000010, "BPT_INT" },
        { 0x00000020, "BPT_PAUSE" },
        { 0x00000040, "SINGLE_STEP_COMPLETE" },
        { 0x20000000, "ECC_SEC_ERROR" },
        { 0x40000000, "ECC_DED_ERROR" },
        { 0x80000000, "TIMEOUT" },
        {}
};

void
gf100_gr_trap_mp(struct gf100_gr *gr, int gpc, int tpc)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        u32 werr = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x648));
        u32 gerr = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x650));
        const struct nvkm_enum *warp;
        char glob[128];

        nvkm_snprintbf(glob, sizeof(glob), gf100_mp_global_error, gerr);
        warp = nvkm_enum_find(gf100_mp_warp_error, werr & 0xffff);

        nvkm_error(subdev, "GPC%i/TPC%i/MP trap: "
                           "global %08x [%s] warp %04x [%s]\n",
                   gpc, tpc, gerr, glob, werr, warp ? warp->name : "");

        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x648), 0x00000000);
        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x650), gerr);
}

static void
gf100_gr_trap_tpc(struct gf100_gr *gr, int gpc, int tpc)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        u32 stat = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x0508));

        if (stat & 0x00000001) {
                u32 trap = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x0224));
                nvkm_error(subdev, "GPC%d/TPC%d/TEX: %08x\n", gpc, tpc, trap);
                nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x0224), 0xc0000000);
                stat &= ~0x00000001;
        }

        if (stat & 0x00000002) {
                gr->func->trap_mp(gr, gpc, tpc);
                stat &= ~0x00000002;
        }

        if (stat & 0x00000004) {
                u32 trap = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x0084));
                nvkm_error(subdev, "GPC%d/TPC%d/POLY: %08x\n", gpc, tpc, trap);
                nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x0084), 0xc0000000);
                stat &= ~0x00000004;
        }

        if (stat & 0x00000008) {
                u32 trap = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x048c));
                nvkm_error(subdev, "GPC%d/TPC%d/L1C: %08x\n", gpc, tpc, trap);
                nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x048c), 0xc0000000);
                stat &= ~0x00000008;
        }

        if (stat & 0x00000010) {
                u32 trap = nvkm_rd32(device, TPC_UNIT(gpc, tpc, 0x0430));
                nvkm_error(subdev, "GPC%d/TPC%d/MPC: %08x\n", gpc, tpc, trap);
                nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x0430), 0xc0000000);
                stat &= ~0x00000010;
        }

        if (stat) {
                nvkm_error(subdev, "GPC%d/TPC%d/%08x: unknown\n", gpc, tpc, stat);
        }
}

static void
gf100_gr_trap_gpc(struct gf100_gr *gr, int gpc)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        u32 stat = nvkm_rd32(device, GPC_UNIT(gpc, 0x2c90));
        int tpc;

        if (stat & 0x00000001) {
                gf100_gr_trap_gpc_rop(gr, gpc);
                stat &= ~0x00000001;
        }

        if (stat & 0x00000002) {
                u32 trap = nvkm_rd32(device, GPC_UNIT(gpc, 0x0900));
                nvkm_error(subdev, "GPC%d/ZCULL: %08x\n", gpc, trap);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x0900), 0xc0000000);
                stat &= ~0x00000002;
        }

        if (stat & 0x00000004) {
                u32 trap = nvkm_rd32(device, GPC_UNIT(gpc, 0x1028));
                nvkm_error(subdev, "GPC%d/CCACHE: %08x\n", gpc, trap);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x1028), 0xc0000000);
                stat &= ~0x00000004;
        }

        if (stat & 0x00000008) {
                u32 trap = nvkm_rd32(device, GPC_UNIT(gpc, 0x0824));
                nvkm_error(subdev, "GPC%d/ESETUP: %08x\n", gpc, trap);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x0824), 0xc0000000);
                stat &= ~0x00000009;
        }

        for (tpc = 0; tpc < gr->tpc_nr[gpc]; tpc++) {
                u32 mask = 0x00010000 << tpc;
                if (stat & mask) {
                        gf100_gr_trap_tpc(gr, gpc, tpc);
                        nvkm_wr32(device, GPC_UNIT(gpc, 0x2c90), mask);
                        stat &= ~mask;
                }
        }

        if (stat) {
                nvkm_error(subdev, "GPC%d/%08x: unknown\n", gpc, stat);
        }
}

static void
gf100_gr_trap_intr(struct gf100_gr *gr)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        char error[128];
        u32 trap = nvkm_rd32(device, 0x400108);
        int rop, gpc;

        if (trap & 0x00000001) {
                u32 stat = nvkm_rd32(device, 0x404000);

                nvkm_snprintbf(error, sizeof(error), gf100_dispatch_error,
                               stat & 0x3fffffff);
                nvkm_error(subdev, "DISPATCH %08x [%s]\n", stat, error);
                nvkm_wr32(device, 0x404000, 0xc0000000);
                nvkm_wr32(device, 0x400108, 0x00000001);
                trap &= ~0x00000001;
        }

        if (trap & 0x00000002) {
                u32 stat = nvkm_rd32(device, 0x404600);

                nvkm_snprintbf(error, sizeof(error), gf100_m2mf_error,
                               stat & 0x3fffffff);
                nvkm_error(subdev, "M2MF %08x [%s]\n", stat, error);

                nvkm_wr32(device, 0x404600, 0xc0000000);
                nvkm_wr32(device, 0x400108, 0x00000002);
                trap &= ~0x00000002;
        }

        if (trap & 0x00000008) {
                u32 stat = nvkm_rd32(device, 0x408030);

                nvkm_snprintbf(error, sizeof(error), gf100_ccache_error,
                               stat & 0x3fffffff);
                nvkm_error(subdev, "CCACHE %08x [%s]\n", stat, error);
                nvkm_wr32(device, 0x408030, 0xc0000000);
                nvkm_wr32(device, 0x400108, 0x00000008);
                trap &= ~0x00000008;
        }

        if (trap & 0x00000010) {
                u32 stat = nvkm_rd32(device, 0x405840);
                nvkm_error(subdev, "SHADER %08x, sph: 0x%06x, stage: 0x%02x\n",
                           stat, stat & 0xffffff, (stat >> 24) & 0x3f);
                nvkm_wr32(device, 0x405840, 0xc0000000);
                nvkm_wr32(device, 0x400108, 0x00000010);
                trap &= ~0x00000010;
        }

        if (trap & 0x00000040) {
                u32 stat = nvkm_rd32(device, 0x40601c);

                nvkm_snprintbf(error, sizeof(error), gf100_unk6_error,
                               stat & 0x3fffffff);
                nvkm_error(subdev, "UNK6 %08x [%s]\n", stat, error);

                nvkm_wr32(device, 0x40601c, 0xc0000000);
                nvkm_wr32(device, 0x400108, 0x00000040);
                trap &= ~0x00000040;
        }

        if (trap & 0x00000080) {
                u32 stat = nvkm_rd32(device, 0x404490);
                u32 pc = nvkm_rd32(device, 0x404494);
                u32 op = nvkm_rd32(device, 0x40449c);

                nvkm_snprintbf(error, sizeof(error), gf100_macro_error,
                               stat & 0x1fffffff);
                nvkm_error(subdev, "MACRO %08x [%s], pc: 0x%03x%s, op: 0x%08x\n",
                           stat, error, pc & 0x7ff,
                           (pc & 0x10000000) ? "" : " (invalid)",
                           op);

                nvkm_wr32(device, 0x404490, 0xc0000000);
                nvkm_wr32(device, 0x400108, 0x00000080);
                trap &= ~0x00000080;
        }

        if (trap & 0x00000100) {
                u32 stat = nvkm_rd32(device, 0x407020) & 0x3fffffff;

                nvkm_snprintbf(error, sizeof(error), gk104_sked_error, stat);
                nvkm_error(subdev, "SKED: %08x [%s]\n", stat, error);

                if (stat)
                        nvkm_wr32(device, 0x407020, 0x40000000);
                nvkm_wr32(device, 0x400108, 0x00000100);
                trap &= ~0x00000100;
        }

        if (trap & 0x01000000) {
                u32 stat = nvkm_rd32(device, 0x400118);
                for (gpc = 0; stat && gpc < gr->gpc_nr; gpc++) {
                        u32 mask = 0x00000001 << gpc;
                        if (stat & mask) {
                                gf100_gr_trap_gpc(gr, gpc);
                                nvkm_wr32(device, 0x400118, mask);
                                stat &= ~mask;
                        }
                }
                nvkm_wr32(device, 0x400108, 0x01000000);
                trap &= ~0x01000000;
        }

        if (trap & 0x02000000) {
                for (rop = 0; rop < gr->rop_nr; rop++) {
                        u32 statz = nvkm_rd32(device, ROP_UNIT(rop, 0x070));
                        u32 statc = nvkm_rd32(device, ROP_UNIT(rop, 0x144));
                        nvkm_error(subdev, "ROP%d %08x %08x\n",
                                 rop, statz, statc);
                        nvkm_wr32(device, ROP_UNIT(rop, 0x070), 0xc0000000);
                        nvkm_wr32(device, ROP_UNIT(rop, 0x144), 0xc0000000);
                }
                nvkm_wr32(device, 0x400108, 0x02000000);
                trap &= ~0x02000000;
        }

        if (trap) {
                nvkm_error(subdev, "TRAP UNHANDLED %08x\n", trap);
                nvkm_wr32(device, 0x400108, trap);
        }
}

static void
gf100_gr_ctxctl_debug_unit(struct gf100_gr *gr, u32 base)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        nvkm_error(subdev, "%06x - done %08x\n", base,
                   nvkm_rd32(device, base + 0x400));
        nvkm_error(subdev, "%06x - stat %08x %08x %08x %08x\n", base,
                   nvkm_rd32(device, base + 0x800),
                   nvkm_rd32(device, base + 0x804),
                   nvkm_rd32(device, base + 0x808),
                   nvkm_rd32(device, base + 0x80c));
        nvkm_error(subdev, "%06x - stat %08x %08x %08x %08x\n", base,
                   nvkm_rd32(device, base + 0x810),
                   nvkm_rd32(device, base + 0x814),
                   nvkm_rd32(device, base + 0x818),
                   nvkm_rd32(device, base + 0x81c));
}

void
gf100_gr_ctxctl_debug(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        u32 gpcnr = nvkm_rd32(device, 0x409604) & 0xffff;
        u32 gpc;

        gf100_gr_ctxctl_debug_unit(gr, 0x409000);
        for (gpc = 0; gpc < gpcnr; gpc++)
                gf100_gr_ctxctl_debug_unit(gr, 0x502000 + (gpc * 0x8000));
}

static void
gf100_gr_ctxctl_isr(struct gf100_gr *gr)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        u32 stat = nvkm_rd32(device, 0x409c18);

        if (!gr->firmware && (stat & 0x00000001)) {
                u32 code = nvkm_rd32(device, 0x409814);
                if (code == E_BAD_FWMTHD) {
                        u32 class = nvkm_rd32(device, 0x409808);
                        u32  addr = nvkm_rd32(device, 0x40980c);
                        u32  subc = (addr & 0x00070000) >> 16;
                        u32  mthd = (addr & 0x00003ffc);
                        u32  data = nvkm_rd32(device, 0x409810);

                        nvkm_error(subdev, "FECS MTHD subc %d class %04x "
                                           "mthd %04x data %08x\n",
                                   subc, class, mthd, data);
                } else {
                        nvkm_error(subdev, "FECS ucode error %d\n", code);
                }
                nvkm_wr32(device, 0x409c20, 0x00000001);
                stat &= ~0x00000001;
        }

        if (!gr->firmware && (stat & 0x00080000)) {
                nvkm_error(subdev, "FECS watchdog timeout\n");
                gf100_gr_ctxctl_debug(gr);
                nvkm_wr32(device, 0x409c20, 0x00080000);
                stat &= ~0x00080000;
        }

        if (stat) {
                nvkm_error(subdev, "FECS %08x\n", stat);
                gf100_gr_ctxctl_debug(gr);
                nvkm_wr32(device, 0x409c20, stat);
        }
}

static void
gf100_gr_intr(struct nvkm_gr *base)
{
        struct gf100_gr *gr = gf100_gr(base);
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        struct nvkm_fifo_chan *chan;
        unsigned long flags;
        u64 inst = nvkm_rd32(device, 0x409b00) & 0x0fffffff;
        u32 stat = nvkm_rd32(device, 0x400100);
        u32 addr = nvkm_rd32(device, 0x400704);
        u32 mthd = (addr & 0x00003ffc);
        u32 subc = (addr & 0x00070000) >> 16;
        u32 data = nvkm_rd32(device, 0x400708);
        u32 code = nvkm_rd32(device, 0x400110);
        u32 class;
        const char *name = "unknown";
        int chid = -1;

        chan = nvkm_fifo_chan_inst(device->fifo, (u64)inst << 12, &flags);
        if (chan) {
                name = chan->object.client->name;
                chid = chan->chid;
        }

        if (device->card_type < NV_E0 || subc < 4)
                class = nvkm_rd32(device, 0x404200 + (subc * 4));
        else
                class = 0x0000;

        if (stat & 0x00000001) {
                /*
                 * notifier interrupt, only needed for cyclestats
                 * can be safely ignored
                 */
                nvkm_wr32(device, 0x400100, 0x00000001);
                stat &= ~0x00000001;
        }

        if (stat & 0x00000010) {
                if (!gf100_gr_mthd_sw(device, class, mthd, data)) {
                        nvkm_error(subdev, "ILLEGAL_MTHD ch %d [%010llx %s] "
                                   "subc %d class %04x mthd %04x data %08x\n",
                                   chid, inst << 12, name, subc,
                                   class, mthd, data);
                }
                nvkm_wr32(device, 0x400100, 0x00000010);
                stat &= ~0x00000010;
        }

        if (stat & 0x00000020) {
                nvkm_error(subdev, "ILLEGAL_CLASS ch %d [%010llx %s] "
                           "subc %d class %04x mthd %04x data %08x\n",
                           chid, inst << 12, name, subc, class, mthd, data);
                nvkm_wr32(device, 0x400100, 0x00000020);
                stat &= ~0x00000020;
        }

        if (stat & 0x00100000) {
                const struct nvkm_enum *en =
                        nvkm_enum_find(nv50_data_error_names, code);
                nvkm_error(subdev, "DATA_ERROR %08x [%s] ch %d [%010llx %s] "
                                   "subc %d class %04x mthd %04x data %08x\n",
                           code, en ? en->name : "", chid, inst << 12,
                           name, subc, class, mthd, data);
                nvkm_wr32(device, 0x400100, 0x00100000);
                stat &= ~0x00100000;
        }

        if (stat & 0x00200000) {
                nvkm_error(subdev, "TRAP ch %d [%010llx %s]\n",
                           chid, inst << 12, name);
                gf100_gr_trap_intr(gr);
                nvkm_wr32(device, 0x400100, 0x00200000);
                stat &= ~0x00200000;
        }

        if (stat & 0x00080000) {
                gf100_gr_ctxctl_isr(gr);
                nvkm_wr32(device, 0x400100, 0x00080000);
                stat &= ~0x00080000;
        }

        if (stat) {
                nvkm_error(subdev, "intr %08x\n", stat);
                nvkm_wr32(device, 0x400100, stat);
        }

        nvkm_wr32(device, 0x400500, 0x00010001);
        nvkm_fifo_chan_put(device->fifo, flags, &chan);
}

static void
gf100_gr_init_fw(struct nvkm_falcon *falcon,
                 struct gf100_gr_fuc *code, struct gf100_gr_fuc *data)
{
        nvkm_falcon_load_dmem(falcon, data->data, 0x0, data->size, 0);
        nvkm_falcon_load_imem(falcon, code->data, 0x0, code->size, 0, 0, false);
}

static void
gf100_gr_init_csdata(struct gf100_gr *gr,
                     const struct gf100_gr_pack *pack,
                     u32 falcon, u32 starstar, u32 base)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        const struct gf100_gr_pack *iter;
        const struct gf100_gr_init *init;
        u32 addr = ~0, prev = ~0, xfer = 0;
        u32 star, temp;

        nvkm_wr32(device, falcon + 0x01c0, 0x02000000 + starstar);
        star = nvkm_rd32(device, falcon + 0x01c4);
        temp = nvkm_rd32(device, falcon + 0x01c4);
        if (temp > star)
                star = temp;
        nvkm_wr32(device, falcon + 0x01c0, 0x01000000 + star);

        pack_for_each_init(init, iter, pack) {
                u32 head = init->addr - base;
                u32 tail = head + init->count * init->pitch;
                while (head < tail) {
                        if (head != prev + 4 || xfer >= 32) {
                                if (xfer) {
                                        u32 data = ((--xfer << 26) | addr);
                                        nvkm_wr32(device, falcon + 0x01c4, data);
                                        star += 4;
                                }
                                addr = head;
                                xfer = 0;
                        }
                        prev = head;
                        xfer = xfer + 1;
                        head = head + init->pitch;
                }
        }

        nvkm_wr32(device, falcon + 0x01c4, (--xfer << 26) | addr);
        nvkm_wr32(device, falcon + 0x01c0, 0x01000004 + starstar);
        nvkm_wr32(device, falcon + 0x01c4, star + 4);
}

/* Initialize context from an external (secure or not) firmware */
static int
gf100_gr_init_ctxctl_ext(struct gf100_gr *gr)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        struct nvkm_secboot *sb = device->secboot;
        u32 secboot_mask = 0;

        /* load fuc microcode */
        nvkm_mc_unk260(device, 0);

        /* securely-managed falcons must be reset using secure boot */
        if (nvkm_secboot_is_managed(sb, NVKM_SECBOOT_FALCON_FECS))
                secboot_mask |= BIT(NVKM_SECBOOT_FALCON_FECS);
        else
                gf100_gr_init_fw(gr->fecs, &gr->fuc409c, &gr->fuc409d);

        if (nvkm_secboot_is_managed(sb, NVKM_SECBOOT_FALCON_GPCCS))
                secboot_mask |= BIT(NVKM_SECBOOT_FALCON_GPCCS);
        else
                gf100_gr_init_fw(gr->gpccs, &gr->fuc41ac, &gr->fuc41ad);

        if (secboot_mask != 0) {
                int ret = nvkm_secboot_reset(sb, secboot_mask);
                if (ret)
                        return ret;
        }

        nvkm_mc_unk260(device, 1);

        /* start both of them running */
        nvkm_wr32(device, 0x409840, 0xffffffff);
        nvkm_wr32(device, 0x41a10c, 0x00000000);
        nvkm_wr32(device, 0x40910c, 0x00000000);

        nvkm_falcon_start(gr->gpccs);
        nvkm_falcon_start(gr->fecs);

        if (nvkm_msec(device, 2000,
                if (nvkm_rd32(device, 0x409800) & 0x00000001)
                        break;
        ) < 0)
                return -EBUSY;

        nvkm_wr32(device, 0x409840, 0xffffffff);
        nvkm_wr32(device, 0x409500, 0x7fffffff);
        nvkm_wr32(device, 0x409504, 0x00000021);

        nvkm_wr32(device, 0x409840, 0xffffffff);
        nvkm_wr32(device, 0x409500, 0x00000000);
        nvkm_wr32(device, 0x409504, 0x00000010);
        if (nvkm_msec(device, 2000,
                if ((gr->size = nvkm_rd32(device, 0x409800)))
                        break;
        ) < 0)
                return -EBUSY;

        nvkm_wr32(device, 0x409840, 0xffffffff);
        nvkm_wr32(device, 0x409500, 0x00000000);
        nvkm_wr32(device, 0x409504, 0x00000016);
        if (nvkm_msec(device, 2000,
                if (nvkm_rd32(device, 0x409800))
                        break;
        ) < 0)
                return -EBUSY;

        nvkm_wr32(device, 0x409840, 0xffffffff);
        nvkm_wr32(device, 0x409500, 0x00000000);
        nvkm_wr32(device, 0x409504, 0x00000025);
        if (nvkm_msec(device, 2000,
                if (nvkm_rd32(device, 0x409800))
                        break;
        ) < 0)
                return -EBUSY;

        if (device->chipset >= 0xe0) {
                nvkm_wr32(device, 0x409800, 0x00000000);
                nvkm_wr32(device, 0x409500, 0x00000001);
                nvkm_wr32(device, 0x409504, 0x00000030);
                if (nvkm_msec(device, 2000,
                        if (nvkm_rd32(device, 0x409800))
                                break;
                ) < 0)
                        return -EBUSY;

                nvkm_wr32(device, 0x409810, 0xb00095c8);
                nvkm_wr32(device, 0x409800, 0x00000000);
                nvkm_wr32(device, 0x409500, 0x00000001);
                nvkm_wr32(device, 0x409504, 0x00000031);
                if (nvkm_msec(device, 2000,
                        if (nvkm_rd32(device, 0x409800))
                                break;
                ) < 0)
                        return -EBUSY;

                nvkm_wr32(device, 0x409810, 0x00080420);
                nvkm_wr32(device, 0x409800, 0x00000000);
                nvkm_wr32(device, 0x409500, 0x00000001);
                nvkm_wr32(device, 0x409504, 0x00000032);
                if (nvkm_msec(device, 2000,
                        if (nvkm_rd32(device, 0x409800))
                                break;
                ) < 0)
                        return -EBUSY;

                nvkm_wr32(device, 0x409614, 0x00000070);
                nvkm_wr32(device, 0x409614, 0x00000770);
                nvkm_wr32(device, 0x40802c, 0x00000001);
        }

        if (gr->data == NULL) {
                int ret = gf100_grctx_generate(gr);
                if (ret) {
                        nvkm_error(subdev, "failed to construct context\n");
                        return ret;
                }
        }

        return 0;
}

static int
gf100_gr_init_ctxctl_int(struct gf100_gr *gr)
{
        const struct gf100_grctx_func *grctx = gr->func->grctx;
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;

        if (!gr->func->fecs.ucode) {
                return -ENOSYS;
        }

        /* load HUB microcode */
        nvkm_mc_unk260(device, 0);
        nvkm_falcon_load_dmem(gr->fecs, gr->func->fecs.ucode->data.data, 0x0,
                              gr->func->fecs.ucode->data.size, 0);
        nvkm_falcon_load_imem(gr->fecs, gr->func->fecs.ucode->code.data, 0x0,
                              gr->func->fecs.ucode->code.size, 0, 0, false);

        /* load GPC microcode */
        nvkm_falcon_load_dmem(gr->gpccs, gr->func->gpccs.ucode->data.data, 0x0,
                              gr->func->gpccs.ucode->data.size, 0);
        nvkm_falcon_load_imem(gr->gpccs, gr->func->gpccs.ucode->code.data, 0x0,
                              gr->func->gpccs.ucode->code.size, 0, 0, false);
        nvkm_mc_unk260(device, 1);

        /* load register lists */
        gf100_gr_init_csdata(gr, grctx->hub, 0x409000, 0x000, 0x000000);
        gf100_gr_init_csdata(gr, grctx->gpc_0, 0x41a000, 0x000, 0x418000);
        gf100_gr_init_csdata(gr, grctx->gpc_1, 0x41a000, 0x000, 0x418000);
        gf100_gr_init_csdata(gr, grctx->tpc, 0x41a000, 0x004, 0x419800);
        gf100_gr_init_csdata(gr, grctx->ppc, 0x41a000, 0x008, 0x41be00);

        /* start HUB ucode running, it'll init the GPCs */
        nvkm_wr32(device, 0x40910c, 0x00000000);
        nvkm_wr32(device, 0x409100, 0x00000002);
        if (nvkm_msec(device, 2000,
                if (nvkm_rd32(device, 0x409800) & 0x80000000)
                        break;
        ) < 0) {
                gf100_gr_ctxctl_debug(gr);
                return -EBUSY;
        }

        gr->size = nvkm_rd32(device, 0x409804);
        if (gr->data == NULL) {
                int ret = gf100_grctx_generate(gr);
                if (ret) {
                        nvkm_error(subdev, "failed to construct context\n");
                        return ret;
                }
        }

        return 0;
}

int
gf100_gr_init_ctxctl(struct gf100_gr *gr)
{
        int ret;

        if (gr->firmware)
                ret = gf100_gr_init_ctxctl_ext(gr);
        else
                ret = gf100_gr_init_ctxctl_int(gr);

        return ret;
}

void
gf100_gr_oneinit_sm_id(struct gf100_gr *gr)
{
        int tpc, gpc;
        for (tpc = 0; tpc < gr->tpc_max; tpc++) {
                for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
                        if (tpc < gr->tpc_nr[gpc]) {
                                gr->sm[gr->sm_nr].gpc = gpc;
                                gr->sm[gr->sm_nr].tpc = tpc;
                                gr->sm_nr++;
                        }
                }
        }
}

void
gf100_gr_oneinit_tiles(struct gf100_gr *gr)
{
        static const u8 primes[] = {
                3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61
        };
        int init_frac[GPC_MAX], init_err[GPC_MAX], run_err[GPC_MAX], i, j;
        u32 mul_factor, comm_denom;
        u8  gpc_map[GPC_MAX];
        bool sorted;

        switch (gr->tpc_total) {
        case 15: gr->screen_tile_row_offset = 0x06; break;
        case 14: gr->screen_tile_row_offset = 0x05; break;
        case 13: gr->screen_tile_row_offset = 0x02; break;
        case 11: gr->screen_tile_row_offset = 0x07; break;
        case 10: gr->screen_tile_row_offset = 0x06; break;
        case  7:
        case  5: gr->screen_tile_row_offset = 0x01; break;
        case  3: gr->screen_tile_row_offset = 0x02; break;
        case  2:
        case  1: gr->screen_tile_row_offset = 0x01; break;
        default: gr->screen_tile_row_offset = 0x03;
                for (i = 0; i < ARRAY_SIZE(primes); i++) {
                        if (gr->tpc_total % primes[i]) {
                                gr->screen_tile_row_offset = primes[i];
                                break;
                        }
                }
                break;
        }

        /* Sort GPCs by TPC count, highest-to-lowest. */
        for (i = 0; i < gr->gpc_nr; i++)
                gpc_map[i] = i;
        sorted = false;

        while (!sorted) {
                for (sorted = true, i = 0; i < gr->gpc_nr - 1; i++) {
                        if (gr->tpc_nr[gpc_map[i + 1]] >
                            gr->tpc_nr[gpc_map[i + 0]]) {
                                u8 swap = gpc_map[i];
                                gpc_map[i + 0] = gpc_map[i + 1];
                                gpc_map[i + 1] = swap;
                                sorted = false;
                        }
                }
        }

        /* Determine tile->GPC mapping */
        mul_factor = gr->gpc_nr * gr->tpc_max;
        if (mul_factor & 1)
                mul_factor = 2;
        else
                mul_factor = 1;

        comm_denom = gr->gpc_nr * gr->tpc_max * mul_factor;

        for (i = 0; i < gr->gpc_nr; i++) {
                init_frac[i] = gr->tpc_nr[gpc_map[i]] * gr->gpc_nr * mul_factor;
                 init_err[i] = i * gr->tpc_max * mul_factor - comm_denom/2;
                  run_err[i] = init_frac[i] + init_err[i];
        }

        for (i = 0; i < gr->tpc_total;) {
                for (j = 0; j < gr->gpc_nr; j++) {
                        if ((run_err[j] * 2) >= comm_denom) {
                                gr->tile[i++] = gpc_map[j];
                                run_err[j] += init_frac[j] - comm_denom;
                        } else {
                                run_err[j] += init_frac[j];
                        }
                }
        }
}

static int
gf100_gr_oneinit(struct nvkm_gr *base)
{
        struct gf100_gr *gr = gf100_gr(base);
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        int i, j;
        int ret;

        ret = nvkm_falcon_v1_new(subdev, "FECS", 0x409000, &gr->fecs);
        if (ret)
                return ret;

        ret = nvkm_falcon_v1_new(subdev, "GPCCS", 0x41a000, &gr->gpccs);
        if (ret)
                return ret;

        nvkm_pmu_pgob(device->pmu, false);

        gr->rop_nr = gr->func->rops(gr);
        gr->gpc_nr = nvkm_rd32(device, 0x409604) & 0x0000001f;
        for (i = 0; i < gr->gpc_nr; i++) {
                gr->tpc_nr[i]  = nvkm_rd32(device, GPC_UNIT(i, 0x2608));
                gr->tpc_max = max(gr->tpc_max, gr->tpc_nr[i]);
                gr->tpc_total += gr->tpc_nr[i];
                gr->ppc_nr[i]  = gr->func->ppc_nr;
                for (j = 0; j < gr->ppc_nr[i]; j++) {
                        gr->ppc_tpc_mask[i][j] =
                                nvkm_rd32(device, GPC_UNIT(i, 0x0c30 + (j * 4)));
                        if (gr->ppc_tpc_mask[i][j] == 0)
                                continue;
                        gr->ppc_mask[i] |= (1 << j);
                        gr->ppc_tpc_nr[i][j] = hweight8(gr->ppc_tpc_mask[i][j]);
                        if (gr->ppc_tpc_min == 0 ||
                            gr->ppc_tpc_min > gr->ppc_tpc_nr[i][j])
                                gr->ppc_tpc_min = gr->ppc_tpc_nr[i][j];
                        if (gr->ppc_tpc_max < gr->ppc_tpc_nr[i][j])
                                gr->ppc_tpc_max = gr->ppc_tpc_nr[i][j];
                }
        }

        memset(gr->tile, 0xff, sizeof(gr->tile));
        gr->func->oneinit_tiles(gr);
        gr->func->oneinit_sm_id(gr);
        return 0;
}

static int
gf100_gr_init_(struct nvkm_gr *base)
{
        struct gf100_gr *gr = gf100_gr(base);
        struct nvkm_subdev *subdev = &base->engine.subdev;
        u32 ret;

        nvkm_pmu_pgob(gr->base.engine.subdev.device->pmu, false);

        ret = nvkm_falcon_get(gr->fecs, subdev);
        if (ret)
                return ret;

        ret = nvkm_falcon_get(gr->gpccs, subdev);
        if (ret)
                return ret;

        return gr->func->init(gr);
}

static int
gf100_gr_fini_(struct nvkm_gr *base, bool suspend)
{
        struct gf100_gr *gr = gf100_gr(base);
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        nvkm_falcon_put(gr->gpccs, subdev);
        nvkm_falcon_put(gr->fecs, subdev);
        return 0;
}

void
gf100_gr_dtor_fw(struct gf100_gr_fuc *fuc)
{
        kfree(fuc->data);
        fuc->data = NULL;
}

static void
gf100_gr_dtor_init(struct gf100_gr_pack *pack)
{
        vfree(pack);
}

void *
gf100_gr_dtor(struct nvkm_gr *base)
{
        struct gf100_gr *gr = gf100_gr(base);

        if (gr->func->dtor)
                gr->func->dtor(gr);
        kfree(gr->data);

        nvkm_falcon_del(&gr->gpccs);
        nvkm_falcon_del(&gr->fecs);

        gf100_gr_dtor_fw(&gr->fuc409c);
        gf100_gr_dtor_fw(&gr->fuc409d);
        gf100_gr_dtor_fw(&gr->fuc41ac);
        gf100_gr_dtor_fw(&gr->fuc41ad);

        gf100_gr_dtor_init(gr->fuc_bundle);
        gf100_gr_dtor_init(gr->fuc_method);
        gf100_gr_dtor_init(gr->fuc_sw_ctx);
        gf100_gr_dtor_init(gr->fuc_sw_nonctx);

        return gr;
}

static const struct nvkm_gr_func
gf100_gr_ = {
        .dtor = gf100_gr_dtor,
        .oneinit = gf100_gr_oneinit,
        .init = gf100_gr_init_,
        .fini = gf100_gr_fini_,
        .intr = gf100_gr_intr,
        .units = gf100_gr_units,
        .chan_new = gf100_gr_chan_new,
        .object_get = gf100_gr_object_get,
        .chsw_load = gf100_gr_chsw_load,
};

int
gf100_gr_ctor_fw_legacy(struct gf100_gr *gr, const char *fwname,
                        struct gf100_gr_fuc *fuc, int ret)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        const struct firmware *fw;
        char f[32];

        /* see if this firmware has a legacy path */
        if (!strcmp(fwname, "fecs_inst"))
                fwname = "fuc409c";
        else if (!strcmp(fwname, "fecs_data"))
                fwname = "fuc409d";
        else if (!strcmp(fwname, "gpccs_inst"))
                fwname = "fuc41ac";
        else if (!strcmp(fwname, "gpccs_data"))
                fwname = "fuc41ad";
        else {
                /* nope, let's just return the error we got */
                nvkm_error(subdev, "failed to load %s\n", fwname);
                return ret;
        }

        /* yes, try to load from the legacy path */
        nvkm_debug(subdev, "%s: falling back to legacy path\n", fwname);

        snprintf(f, sizeof(f), "nouveau/nv%02x_%s", device->chipset, fwname);
        ret = request_firmware(&fw, f, device->dev);
        if (ret) {
                snprintf(f, sizeof(f), "nouveau/%s", fwname);
                ret = request_firmware(&fw, f, device->dev);
                if (ret) {
                        nvkm_error(subdev, "failed to load %s\n", fwname);
                        return ret;
                }
        }

        fuc->size = fw->size;
        fuc->data = kmemdup(fw->data, fuc->size, GFP_KERNEL);
        release_firmware(fw);
        return (fuc->data != NULL) ? 0 : -ENOMEM;
}

int
gf100_gr_ctor_fw(struct gf100_gr *gr, const char *fwname,
                 struct gf100_gr_fuc *fuc)
{
        struct nvkm_subdev *subdev = &gr->base.engine.subdev;
        struct nvkm_device *device = subdev->device;
        const struct firmware *fw;
        int ret;

        ret = nvkm_firmware_get(device, fwname, &fw);
        if (ret) {
                ret = gf100_gr_ctor_fw_legacy(gr, fwname, fuc, ret);
                if (ret)
                        return -ENODEV;
                return 0;
        }

        fuc->size = fw->size;
        fuc->data = kmemdup(fw->data, fuc->size, GFP_KERNEL);
        nvkm_firmware_put(fw);
        return (fuc->data != NULL) ? 0 : -ENOMEM;
}

int
gf100_gr_ctor(const struct gf100_gr_func *func, struct nvkm_device *device,
              int index, struct gf100_gr *gr)
{
        gr->func = func;
        gr->firmware = nvkm_boolopt(device->cfgopt, "NvGrUseFW",
                                    func->fecs.ucode == NULL);

        return nvkm_gr_ctor(&gf100_gr_, device, index,
                            gr->firmware || func->fecs.ucode != NULL,
                            &gr->base);
}

int
gf100_gr_new_(const struct gf100_gr_func *func, struct nvkm_device *device,
              int index, struct nvkm_gr **pgr)
{
        struct gf100_gr *gr;
        int ret;

        if (!(gr = kzalloc(sizeof(*gr), GFP_KERNEL)))
                return -ENOMEM;
        *pgr = &gr->base;

        ret = gf100_gr_ctor(func, device, index, gr);
        if (ret)
                return ret;

        if (gr->firmware) {
                if (gf100_gr_ctor_fw(gr, "fecs_inst", &gr->fuc409c) ||
                    gf100_gr_ctor_fw(gr, "fecs_data", &gr->fuc409d) ||
                    gf100_gr_ctor_fw(gr, "gpccs_inst", &gr->fuc41ac) ||
                    gf100_gr_ctor_fw(gr, "gpccs_data", &gr->fuc41ad))
                        return -ENODEV;
        }

        return 0;
}

void
gf100_gr_init_400054(struct gf100_gr *gr)
{
        nvkm_wr32(gr->base.engine.subdev.device, 0x400054, 0x34ce3464);

}

void
gf100_gr_init_shader_exceptions(struct gf100_gr *gr, int gpc, int tpc)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x644), 0x001ffffe);
        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x64c), 0x0000000f);
}

void
gf100_gr_init_tex_hww_esr(struct gf100_gr *gr, int gpc, int tpc)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x224), 0xc0000000);
}

void
gf100_gr_init_419eb4(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        nvkm_mask(device, 0x419eb4, 0x00001000, 0x00001000);
}

void
gf100_gr_init_419cc0(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        int gpc, tpc;

        nvkm_mask(device, 0x419cc0, 0x00000008, 0x00000008);

        for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
                for (tpc = 0; tpc < gr->tpc_nr[gpc]; tpc++)
                        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x48c), 0xc0000000);
        }
}

void
gf100_gr_init_40601c(struct gf100_gr *gr)
{
        nvkm_wr32(gr->base.engine.subdev.device, 0x40601c, 0xc0000000);
}

void
gf100_gr_init_fecs_exceptions(struct gf100_gr *gr)
{
        const u32 data = gr->firmware ? 0x000e0000 : 0x000e0001;
        nvkm_wr32(gr->base.engine.subdev.device, 0x409c24, data);
}

void
gf100_gr_init_gpc_mmu(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        struct nvkm_fb *fb = device->fb;

        nvkm_wr32(device, 0x418880, nvkm_rd32(device, 0x100c80) & 0x00000001);
        nvkm_wr32(device, 0x4188a4, 0x03000000);
        nvkm_wr32(device, 0x418888, 0x00000000);
        nvkm_wr32(device, 0x41888c, 0x00000000);
        nvkm_wr32(device, 0x418890, 0x00000000);
        nvkm_wr32(device, 0x418894, 0x00000000);
        nvkm_wr32(device, 0x4188b4, nvkm_memory_addr(fb->mmu_wr) >> 8);
        nvkm_wr32(device, 0x4188b8, nvkm_memory_addr(fb->mmu_rd) >> 8);
}

void
gf100_gr_init_num_active_ltcs(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        nvkm_wr32(device, GPC_BCAST(0x08ac), nvkm_rd32(device, 0x100800));
}

void
gf100_gr_init_zcull(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        const u32 magicgpc918 = DIV_ROUND_UP(0x00800000, gr->tpc_total);
        const u8 tile_nr = ALIGN(gr->tpc_total, 32);
        u8 bank[GPC_MAX] = {}, gpc, i, j;
        u32 data;

        for (i = 0; i < tile_nr; i += 8) {
                for (data = 0, j = 0; j < 8 && i + j < gr->tpc_total; j++) {
                        data |= bank[gr->tile[i + j]] << (j * 4);
                        bank[gr->tile[i + j]]++;
                }
                nvkm_wr32(device, GPC_BCAST(0x0980 + ((i / 8) * 4)), data);
        }

        for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
                nvkm_wr32(device, GPC_UNIT(gpc, 0x0914),
                          gr->screen_tile_row_offset << 8 | gr->tpc_nr[gpc]);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x0910), 0x00040000 |
                                                         gr->tpc_total);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x0918), magicgpc918);
        }

        nvkm_wr32(device, GPC_BCAST(0x1bd4), magicgpc918);
}

void
gf100_gr_init_vsc_stream_master(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        nvkm_mask(device, TPC_UNIT(0, 0, 0x05c), 0x00000001, 0x00000001);
}

int
gf100_gr_init(struct gf100_gr *gr)
{
        struct nvkm_device *device = gr->base.engine.subdev.device;
        int gpc, tpc, rop;

        if (gr->func->init_419bd8)
                gr->func->init_419bd8(gr);

        gr->func->init_gpc_mmu(gr);

        if (gr->fuc_sw_nonctx)
                gf100_gr_mmio(gr, gr->fuc_sw_nonctx);
        else
                gf100_gr_mmio(gr, gr->func->mmio);

        gf100_gr_wait_idle(gr);

        if (gr->func->init_r405a14)
                gr->func->init_r405a14(gr);

        if (gr->func->clkgate_pack)
                nvkm_therm_clkgate_init(device->therm, gr->func->clkgate_pack);

        if (gr->func->init_bios)
                gr->func->init_bios(gr);

        gr->func->init_vsc_stream_master(gr);
        gr->func->init_zcull(gr);
        gr->func->init_num_active_ltcs(gr);
        if (gr->func->init_rop_active_fbps)
                gr->func->init_rop_active_fbps(gr);
        if (gr->func->init_bios_2)
                gr->func->init_bios_2(gr);
        if (gr->func->init_swdx_pes_mask)
                gr->func->init_swdx_pes_mask(gr);

        nvkm_wr32(device, 0x400500, 0x00010001);

        nvkm_wr32(device, 0x400100, 0xffffffff);
        nvkm_wr32(device, 0x40013c, 0xffffffff);
        nvkm_wr32(device, 0x400124, 0x00000002);

        gr->func->init_fecs_exceptions(gr);
        if (gr->func->init_ds_hww_esr_2)
                gr->func->init_ds_hww_esr_2(gr);

        nvkm_wr32(device, 0x404000, 0xc0000000);
        nvkm_wr32(device, 0x404600, 0xc0000000);
        nvkm_wr32(device, 0x408030, 0xc0000000);

        if (gr->func->init_40601c)
                gr->func->init_40601c(gr);

        nvkm_wr32(device, 0x404490, 0xc0000000);
        nvkm_wr32(device, 0x406018, 0xc0000000);

        if (gr->func->init_sked_hww_esr)
                gr->func->init_sked_hww_esr(gr);

        nvkm_wr32(device, 0x405840, 0xc0000000);
        nvkm_wr32(device, 0x405844, 0x00ffffff);

        if (gr->func->init_419cc0)
                gr->func->init_419cc0(gr);
        if (gr->func->init_419eb4)
                gr->func->init_419eb4(gr);
        if (gr->func->init_419c9c)
                gr->func->init_419c9c(gr);

        if (gr->func->init_ppc_exceptions)
                gr->func->init_ppc_exceptions(gr);

        for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
                nvkm_wr32(device, GPC_UNIT(gpc, 0x0420), 0xc0000000);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x0900), 0xc0000000);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x1028), 0xc0000000);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x0824), 0xc0000000);
                for (tpc = 0; tpc < gr->tpc_nr[gpc]; tpc++) {
                        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x508), 0xffffffff);
                        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x50c), 0xffffffff);
                        if (gr->func->init_tex_hww_esr)
                                gr->func->init_tex_hww_esr(gr, gpc, tpc);
                        nvkm_wr32(device, TPC_UNIT(gpc, tpc, 0x084), 0xc0000000);
                        if (gr->func->init_504430)
                                gr->func->init_504430(gr, gpc, tpc);
                        gr->func->init_shader_exceptions(gr, gpc, tpc);
                }
                nvkm_wr32(device, GPC_UNIT(gpc, 0x2c90), 0xffffffff);
                nvkm_wr32(device, GPC_UNIT(gpc, 0x2c94), 0xffffffff);
        }

        for (rop = 0; rop < gr->rop_nr; rop++) {
                nvkm_wr32(device, ROP_UNIT(rop, 0x144), 0x40000000);
                nvkm_wr32(device, ROP_UNIT(rop, 0x070), 0x40000000);
                nvkm_wr32(device, ROP_UNIT(rop, 0x204), 0xffffffff);
                nvkm_wr32(device, ROP_UNIT(rop, 0x208), 0xffffffff);
        }

        nvkm_wr32(device, 0x400108, 0xffffffff);
        nvkm_wr32(device, 0x400138, 0xffffffff);
        nvkm_wr32(device, 0x400118, 0xffffffff);
        nvkm_wr32(device, 0x400130, 0xffffffff);
        nvkm_wr32(device, 0x40011c, 0xffffffff);
        nvkm_wr32(device, 0x400134, 0xffffffff);

        if (gr->func->init_400054)
                gr->func->init_400054(gr);

        gf100_gr_zbc_init(gr);

        if (gr->func->init_4188a4)
                gr->func->init_4188a4(gr);

        return gf100_gr_init_ctxctl(gr);
}

#include "fuc/hubgf100.fuc3.h"

struct gf100_gr_ucode
gf100_gr_fecs_ucode = {
        .code.data = gf100_grhub_code,
        .code.size = sizeof(gf100_grhub_code),
        .data.data = gf100_grhub_data,
        .data.size = sizeof(gf100_grhub_data),
};

#include "fuc/gpcgf100.fuc3.h"

struct gf100_gr_ucode
gf100_gr_gpccs_ucode = {
        .code.data = gf100_grgpc_code,
        .code.size = sizeof(gf100_grgpc_code),
        .data.data = gf100_grgpc_data,
        .data.size = sizeof(gf100_grgpc_data),
};

static const struct gf100_gr_func
gf100_gr = {
        .oneinit_tiles = gf100_gr_oneinit_tiles,
        .oneinit_sm_id = gf100_gr_oneinit_sm_id,
        .init = gf100_gr_init,
        .init_gpc_mmu = gf100_gr_init_gpc_mmu,
        .init_vsc_stream_master = gf100_gr_init_vsc_stream_master,
        .init_zcull = gf100_gr_init_zcull,
        .init_num_active_ltcs = gf100_gr_init_num_active_ltcs,
        .init_fecs_exceptions = gf100_gr_init_fecs_exceptions,
        .init_40601c = gf100_gr_init_40601c,
        .init_419cc0 = gf100_gr_init_419cc0,
        .init_419eb4 = gf100_gr_init_419eb4,
        .init_tex_hww_esr = gf100_gr_init_tex_hww_esr,
        .init_shader_exceptions = gf100_gr_init_shader_exceptions,
        .init_400054 = gf100_gr_init_400054,
        .trap_mp = gf100_gr_trap_mp,
        .mmio = gf100_gr_pack_mmio,
        .fecs.ucode = &gf100_gr_fecs_ucode,
        .gpccs.ucode = &gf100_gr_gpccs_ucode,
        .rops = gf100_gr_rops,
        .grctx = &gf100_grctx,
        .zbc = &gf100_gr_zbc,
        .sclass = {
                { -1, -1, FERMI_TWOD_A },
                { -1, -1, FERMI_MEMORY_TO_MEMORY_FORMAT_A },
                { -1, -1, FERMI_A, &gf100_fermi },
                { -1, -1, FERMI_COMPUTE_A },
                {}
        }
};

int
gf100_gr_new(struct nvkm_device *device, int index, struct nvkm_gr **pgr)
{
        return gf100_gr_new_(&gf100_gr, device, index, pgr);
}