drm/nouveau/instmem: add hal for set_bar0_window_addr()

GH100/GBxxx have moved the register that controls where in VRAM the
the BAR0 NV_PRAMIN window points.

Add a HAL for this, as the BAR0 window is needed for BAR2 bootstrap.

Signed-off-by: Ben Skeggs <[email protected]>
Reviewed-by: Dave Airlie <[email protected]>
Reviewed-by: Timur Tabi <[email protected]>
Tested-by: Timur Tabi <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

Author: Ben Skeggs

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/fbsr.c

@@ -317,6 +317,7 @@ r535_instmem_new(const struct nvkm_instmem_func *hw,
 	rm->memory_new = hw->memory_new;
 	rm->memory_wrap = hw->memory_wrap;
 	rm->zero = false;
+	rm->set_bar0_window_addr = hw->set_bar0_window_addr;
 
 	ret = nv50_instmem_new_(rm, device, type, inst, pinstmem);
 	if (ret)

drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c

@@ -65,7 +65,7 @@ nv50_instobj_wr32_slow(struct nvkm_memory *memory, u64 offset, u32 data)
 
 	spin_lock_irqsave(&imem->base.lock, flags);
 	if (unlikely(imem->addr != base)) {
-		nvkm_wr32(device, 0x001700, base >> 16);
+		imem->base.func->set_bar0_window_addr(device, base);
 		imem->addr = base;
 	}
 	nvkm_wr32(device, 0x700000 + addr, data);
@@ -85,7 +85,7 @@ nv50_instobj_rd32_slow(struct nvkm_memory *memory, u64 offset)
 
 	spin_lock_irqsave(&imem->base.lock, flags);
 	if (unlikely(imem->addr != base)) {
-		nvkm_wr32(device, 0x001700, base >> 16);
+		imem->base.func->set_bar0_window_addr(device, base);
 		imem->addr = base;
 	}
 	data = nvkm_rd32(device, 0x700000 + addr);
@@ -394,6 +394,12 @@ nv50_instobj_new(struct nvkm_instmem *imem, u32 size, u32 align, bool zero,
  * instmem subdev implementation
  *****************************************************************************/
 
+static void
+nv50_instmem_set_bar0_window_addr(struct nvkm_device *device, u64 addr)
+{
+	nvkm_wr32(device, 0x001700, addr >> 16);
+}
+
 static void
 nv50_instmem_fini(struct nvkm_instmem *base)
 {
@@ -415,6 +421,7 @@ nv50_instmem = {
 	.memory_new = nv50_instobj_new,
 	.memory_wrap = nv50_instobj_wrap,
 	.zero = false,
+	.set_bar0_window_addr = nv50_instmem_set_bar0_window_addr,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/subdev/instmem/priv.h

@@ -16,6 +16,7 @@ struct nvkm_instmem_func {
 			  bool zero, struct nvkm_memory **);
 	int (*memory_wrap)(struct nvkm_instmem *, struct nvkm_memory *, struct nvkm_memory **);
 	bool zero;
+	void (*set_bar0_window_addr)(struct nvkm_device *, u64 addr);
 };
 
 int nv50_instmem_new_(const struct nvkm_instmem_func *, struct nvkm_device *,