From 80c93e70f89fddd11d8dc754cd88500e2b12de97 Mon Sep 17 00:00:00 2001
From: Taylor R Campbell <riastradh@NetBSD.org>
Date: Tue, 23 Aug 2022 13:51:41 +0000
Subject: [PATCH] WIP: radeon: track down framebuffer mapping flags

---
 sys/external/bsd/drm2/dist/drm/radeon/radeon_fb.c | 1 +
 sys/external/bsd/drm2/dist/drm/ttm/ttm_bo_util.c  | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/sys/external/bsd/drm2/dist/drm/radeon/radeon_fb.c b/sys/external/bsd/drm2/dist/drm/radeon/radeon_fb.c
index 6a6e19dbaf96..d199ea12608c 100644
--- a/sys/external/bsd/drm2/dist/drm/radeon/radeon_fb.c
+++ b/sys/external/bsd/drm2/dist/drm/radeon/radeon_fb.c
@@ -256,6 +256,7 @@ static int radeonfb_create(struct drm_fb_helper *helper,
 	}
 
 	rbo = gem_to_radeon_bo(gobj);
+	printf("%s:%d: bo=%p\n", __func__, __LINE__, &rbo->tbo);
 
 #ifdef __NetBSD__
 	ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->fb, &mode_cmd, gobj);
diff --git a/sys/external/bsd/drm2/dist/drm/ttm/ttm_bo_util.c b/sys/external/bsd/drm2/dist/drm/ttm/ttm_bo_util.c
index 035c49a0fefd..9680c34bca05 100644
--- a/sys/external/bsd/drm2/dist/drm/ttm/ttm_bo_util.c
+++ b/sys/external/bsd/drm2/dist/drm/ttm/ttm_bo_util.c
@@ -644,6 +644,8 @@ static int ttm_bo_ioremap(struct ttm_buffer_object *bo,
 	struct ttm_mem_reg *mem = &bo->mem;
 
 	if (bo->mem.bus.addr) {
+		printf("%s:%d: bo=%p placement=0x%x premapped %p\n",
+		    __func__, __LINE__, bo, mem->placement, bo->mem.bus.addr);
 		map->bo_kmap_type = ttm_bo_map_premapped;
 		map->virtual = (void *)(((u8 *)bo->mem.bus.addr) + offset);
 	} else {
@@ -657,6 +659,8 @@ static int ttm_bo_ioremap(struct ttm_buffer_object *bo,
 		addr = (bo->mem.bus.base + bo->mem.bus.offset + offset);
 		if (ISSET(mem->placement, TTM_PL_FLAG_WC))
 			flags |= BUS_SPACE_MAP_PREFETCHABLE;
+		printf("%s:%d: bo=%p placement=0x%x bus_space_map flags=0x%x\n",
+		    __func__, __LINE__, bo, mem->placement, flags);
 		/* XXX errno NetBSD->Linux */
 		ret = -bus_space_map(bo->bdev->memt, addr, size, flags,
 		    &map->u.io.memh);
@@ -698,6 +702,8 @@ static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo,
 		return ret;
 
 	if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) {
+		printf("%s:%d: bo=%p placement=0x%x kmap\n",
+		    __func__, __LINE__, bo, mem->placement);
 		/*
 		 * We're mapping a single page, and the desired
 		 * page protection is consistent with the bo.
@@ -717,6 +723,8 @@ static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo,
 		 * or to make the buffer object look contiguous.
 		 */
 		prot = ttm_io_prot(mem->placement, PAGE_KERNEL);
+		printf("%s:%d: bo=%p placement=0x%x vmap prot=0x%x\n",
+		    __func__, __LINE__, bo, mem->placement, prot);
 		map->bo_kmap_type = ttm_bo_map_vmap;
 		map->virtual = vmap(ttm->pages + start_page, num_pages,
 				    0, prot);