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);
+ 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..8550f5e47347
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp102.c
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: MIT
+#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,
};