On Thu, May 25, 2023 at 2:31 AM Ben Skeggs <skeggsb@xxxxxxxxx> wrote:
>
> From: Ben Skeggs <bskeggs@xxxxxxxxxx>
>
> Also exposes this for use by upcoming GSP-RM initialisation code.
>
> Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
> ---
> .../gpu/drm/nouveau/include/nvkm/subdev/fb.h | 1 +
> drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild | 1 +
> drivers/gpu/drm/nouveau/nvkm/subdev/fb/base.c | 12 +++++
> .../gpu/drm/nouveau/nvkm/subdev/fb/ga100.c | 3 +-
> .../gpu/drm/nouveau/nvkm/subdev/fb/gp102.c | 17 ++++++-
> .../gpu/drm/nouveau/nvkm/subdev/fb/gv100.c | 3 +-
> drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h | 5 ++
> drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h | 1 +
> .../gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c | 50 +++++++++++++++++++
> .../gpu/drm/nouveau/nvkm/subdev/fb/tu102.c | 3 +-
> 10 files changed, 92 insertions(+), 4 deletions(-)
> create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c
>
> diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h
> index 01a22a13b452..1755b0df3cc1 100644
> --- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h
> +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/fb.h
> @@ -59,6 +59,7 @@ struct nvkm_fb {
> struct nvkm_memory *mmu_wr;
> };
>
> +u64 nvkm_fb_vidmem_size(struct nvkm_device *);
> int nvkm_fb_mem_unlock(struct nvkm_fb *);
>
> void nvkm_fb_tile_init(struct nvkm_fb *, int region, u32 addr, u32 size,
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild
> index 6ba5120a2ebe..11dbfc4a381a 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/Kbuild
> @@ -55,6 +55,7 @@ nvkm-y += nvkm/subdev/fb/ramgk104.o
> nvkm-y += nvkm/subdev/fb/ramgm107.o
> nvkm-y += nvkm/subdev/fb/ramgm200.o
> nvkm-y += nvkm/subdev/fb/ramgp100.o
> +nvkm-y += nvkm/subdev/fb/ramgp102.o
> nvkm-y += nvkm/subdev/fb/ramga102.o
> nvkm-y += nvkm/subdev/fb/sddr2.o
> nvkm-y += nvkm/subdev/fb/sddr3.o
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/base.c
> index 0955340cc421..8a286a9349ac 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/base.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/base.c
> @@ -174,6 +174,18 @@ nvkm_fb_mem_unlock(struct nvkm_fb *fb)
> return 0;
> }
>
> +u64
> +nvkm_fb_vidmem_size(struct nvkm_device *device)
> +{
> + struct nvkm_fb *fb = device->fb;
> +
> + if (fb && fb->func->vidmem.size)
> + return fb->func->vidmem.size(fb);
> +
> + WARN_ON(1);
> + return 0;
> +}
> +
> static int
> nvkm_fb_init(struct nvkm_subdev *subdev)
> {
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ga100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ga100.c
> index a7456e786463..12037fd4fdf2 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ga100.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ga100.c
> @@ -30,7 +30,8 @@ ga100_fb = {
> .init_page = gv100_fb_init_page,
> .init_unkn = gp100_fb_init_unkn,
> .sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
> - .ram_new = gp100_ram_new,
> + .vidmem.size = gp102_fb_vidmem_size,
> + .ram_new = gp102_ram_new,
> .default_bigpage = 16,
> };
>
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp102.c
> index 14d942e8b857..534553c64805 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp102.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp102.c
> @@ -40,6 +40,20 @@ gp102_fb_vpr_scrub_required(struct nvkm_fb *fb)
> return (nvkm_rd32(device, 0x100cd0) & 0x00000010) != 0;
> }
>
> +u64
> +gp102_fb_vidmem_size(struct nvkm_fb *fb)
> +{
> + const u32 data = nvkm_rd32(fb->subdev.device, 0x100ce0);
Do we have any kind of documentation for this register?
> + const u32 lmag = (data & 0x000003f0) >> 4;
> + const u32 lsca = (data & 0x0000000f);
> + const u64 size = (u64)lmag << (lsca + 20);
> +
> + if (data & 0x40000000)
> + return size / 16 * 15;
> +
> + return size;
> +}
> +
> int
> gp102_fb_oneinit(struct nvkm_fb *fb)
> {
> @@ -59,9 +73,10 @@ gp102_fb = {
> .init_remapper = gp100_fb_init_remapper,
> .init_page = gm200_fb_init_page,
> .sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
> + .vidmem.size = gp102_fb_vidmem_size,
> .vpr.scrub_required = gp102_fb_vpr_scrub_required,
> .vpr.scrub = gp102_fb_vpr_scrub,
> - .ram_new = gp100_ram_new,
> + .ram_new = gp102_ram_new,
> };
>
> int
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gv100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gv100.c
> index 4d8a286a7a34..f422564bee5b 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gv100.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gv100.c
> @@ -36,9 +36,10 @@ gv100_fb = {
> .init_page = gv100_fb_init_page,
> .init_unkn = gp100_fb_init_unkn,
> .sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
> + .vidmem.size = gp102_fb_vidmem_size,
> .vpr.scrub_required = gp102_fb_vpr_scrub_required,
> .vpr.scrub = gp102_fb_vpr_scrub,
> - .ram_new = gp100_ram_new,
> + .ram_new = gp102_ram_new,
> .default_bigpage = 16,
> };
>
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h
> index 726c30c8bf95..77d6a8c10829 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/priv.h
> @@ -20,6 +20,10 @@ struct nvkm_fb_func {
> void (*flush_page_init)(struct nvkm_fb *);
> } sysmem;
>
> + struct nvkm_fb_func_vidmem {
> + u64 (*size)(struct nvkm_fb *);
> + } vidmem;
> +
> struct {
> bool (*scrub_required)(struct nvkm_fb *);
> int (*scrub)(struct nvkm_fb *);
> @@ -84,6 +88,7 @@ void gp100_fb_init_remapper(struct nvkm_fb *);
> void gp100_fb_init_unkn(struct nvkm_fb *);
>
> int gp102_fb_oneinit(struct nvkm_fb *);
> +u64 gp102_fb_vidmem_size(struct nvkm_fb *);
> bool gp102_fb_vpr_scrub_required(struct nvkm_fb *);
> int gp102_fb_vpr_scrub(struct nvkm_fb *);
>
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h
> index ea7d66f3dd82..33d4ab8d92e6 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h
> @@ -70,5 +70,6 @@ int gk104_ram_new(struct nvkm_fb *, struct nvkm_ram **);
> int gm107_ram_new(struct nvkm_fb *, struct nvkm_ram **);
> int gm200_ram_new(struct nvkm_fb *, struct nvkm_ram **);
> int gp100_ram_new(struct nvkm_fb *, struct nvkm_ram **);
> +int gp102_ram_new(struct nvkm_fb *, struct nvkm_ram **);
> int ga102_ram_new(struct nvkm_fb *, struct nvkm_ram **);
> #endif
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c
> new file mode 100644
> index 000000000000..ee541b049fc5
> --- /dev/null
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c
> @@ -0,0 +1,50 @@
> +/*
> + * Copyright 2023 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.
> + */
> +#include "ram.h"
> +
> +#include <subdev/bios.h>
> +
> +static const struct nvkm_ram_func
> +gp102_ram = {
> +};
> +
> +int
> +gp102_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
> +{
> + enum nvkm_ram_type type = nvkm_fb_bios_memtype(fb->subdev.device->bios);
> + const u32 rsvd_head = ( 256 * 1024); /* vga memory */
> + const u32 rsvd_tail = (1024 * 1024); /* vbios etc */
> + u64 size = fb->func->vidmem.size(fb);
> + int ret;
> +
> + ret = nvkm_ram_new_(&gp102_ram, fb, type, size, pram);
> + if (ret)
> + return ret;
> +
> + nvkm_mm_fini(&(*pram)->vram);
> +
> + return nvkm_mm_init(&(*pram)->vram, NVKM_RAM_MM_NORMAL,
> + rsvd_head >> NVKM_RAM_MM_SHIFT,
> + (size - rsvd_head - rsvd_tail) >> NVKM_RAM_MM_SHIFT,
> + 1);
> +
> +}
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/tu102.c
> index b8803c124c3b..bcc23d4c8115 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/tu102.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/tu102.c
> @@ -36,9 +36,10 @@ tu102_fb = {
> .init_page = gv100_fb_init_page,
> .init_unkn = gp100_fb_init_unkn,
> .sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
> + .vidmem.size = gp102_fb_vidmem_size,
> .vpr.scrub_required = tu102_fb_vpr_scrub_required,
> .vpr.scrub = gp102_fb_vpr_scrub,
> - .ram_new = gp100_ram_new,
> + .ram_new = gp102_ram_new,
> .default_bigpage = 16,
> };
>
> --
> 2.40.1
>
