drm/amd/display: Use physical addressing for DMCUB on both dcn20/21

[Why]
CW0 and CW1 need to use physical addressing mode for dcn20 and dcn21.

The current code for dcn20 is using virtual.

[How]
We already program the DMCUB like this on dcn21 so we should just use
the same sequence for both.

Copy the dcn21 sequences into the dmjub_dcn20.c file and rename them.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

4 files changed, 44 insertions, 125 deletions

diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c
index 5760f25c3309..f45e14ada685 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c
@@ -54,6 +54,14 @@ const struct dmub_srv_common_regs dmub_srv_dcn20_regs = {
 
 /* Shared functions. */
 
+static inline void dmub_dcn20_translate_addr(const union dmub_addr *addr_in,
+					     uint64_t fb_base,
+					     uint64_t fb_offset,
+					     union dmub_addr *addr_out)
+{
+	addr_out->quad_part = addr_in->quad_part - fb_base + fb_offset;
+}
+
 void dmub_dcn20_reset(struct dmub_srv *dmub)
 {
 	REG_UPDATE(DMCUB_CNTL, DMCUB_SOFT_RESET, 1);
@@ -71,19 +79,26 @@ void dmub_dcn20_backdoor_load(struct dmub_srv *dmub,
 			      const struct dmub_window *cw0,
 			      const struct dmub_window *cw1)
 {
+	union dmub_addr offset;
+	uint64_t fb_base = dmub->fb_base, fb_offset = dmub->fb_offset;
+
 	REG_UPDATE(DMCUB_SEC_CNTL, DMCUB_SEC_RESET, 1);
-	REG_UPDATE_2(DMCUB_MEM_CNTL, DMCUB_MEM_READ_SPACE, 0x4,
-		     DMCUB_MEM_WRITE_SPACE, 0x4);
+	REG_UPDATE_2(DMCUB_MEM_CNTL, DMCUB_MEM_READ_SPACE, 0x3,
+		     DMCUB_MEM_WRITE_SPACE, 0x3);
+
+	dmub_dcn20_translate_addr(&cw0->offset, fb_base, fb_offset, &offset);
 
-	REG_WRITE(DMCUB_REGION3_CW0_OFFSET, cw0->offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW0_OFFSET_HIGH, cw0->offset.u.high_part);
+	REG_WRITE(DMCUB_REGION3_CW0_OFFSET, offset.u.low_part);
+	REG_WRITE(DMCUB_REGION3_CW0_OFFSET_HIGH, offset.u.high_part);
 	REG_WRITE(DMCUB_REGION3_CW0_BASE_ADDRESS, cw0->region.base);
 	REG_SET_2(DMCUB_REGION3_CW0_TOP_ADDRESS, 0,
 		  DMCUB_REGION3_CW0_TOP_ADDRESS, cw0->region.top,
 		  DMCUB_REGION3_CW0_ENABLE, 1);
 
-	REG_WRITE(DMCUB_REGION3_CW1_OFFSET, cw1->offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW1_OFFSET_HIGH, cw1->offset.u.high_part);
+	dmub_dcn20_translate_addr(&cw1->offset, fb_base, fb_offset, &offset);
+
+	REG_WRITE(DMCUB_REGION3_CW1_OFFSET, offset.u.low_part);
+	REG_WRITE(DMCUB_REGION3_CW1_OFFSET_HIGH, offset.u.high_part);
 	REG_WRITE(DMCUB_REGION3_CW1_BASE_ADDRESS, cw1->region.base);
 	REG_SET_2(DMCUB_REGION3_CW1_TOP_ADDRESS, 0,
 		  DMCUB_REGION3_CW1_TOP_ADDRESS, cw1->region.top,
@@ -100,37 +115,49 @@ void dmub_dcn20_setup_windows(struct dmub_srv *dmub,
 			      const struct dmub_window *cw5,
 			      const struct dmub_window *cw6)
 {
-	REG_WRITE(DMCUB_REGION3_CW2_OFFSET, cw2->offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW2_OFFSET_HIGH, cw2->offset.u.high_part);
+	union dmub_addr offset;
+	uint64_t fb_base = dmub->fb_base, fb_offset = dmub->fb_offset;
+
+	dmub_dcn20_translate_addr(&cw2->offset, fb_base, fb_offset, &offset);
+
+	REG_WRITE(DMCUB_REGION3_CW2_OFFSET, offset.u.low_part);
+	REG_WRITE(DMCUB_REGION3_CW2_OFFSET_HIGH, offset.u.high_part);
 	REG_WRITE(DMCUB_REGION3_CW2_BASE_ADDRESS, cw2->region.base);
 	REG_SET_2(DMCUB_REGION3_CW2_TOP_ADDRESS, 0,
 		  DMCUB_REGION3_CW2_TOP_ADDRESS, cw2->region.top,
 		  DMCUB_REGION3_CW2_ENABLE, 1);
 
-	REG_WRITE(DMCUB_REGION3_CW3_OFFSET, cw3->offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW3_OFFSET_HIGH, cw3->offset.u.high_part);
+	dmub_dcn20_translate_addr(&cw3->offset, fb_base, fb_offset, &offset);
+
+	REG_WRITE(DMCUB_REGION3_CW3_OFFSET, offset.u.low_part);
+	REG_WRITE(DMCUB_REGION3_CW3_OFFSET_HIGH, offset.u.high_part);
 	REG_WRITE(DMCUB_REGION3_CW3_BASE_ADDRESS, cw3->region.base);
 	REG_SET_2(DMCUB_REGION3_CW3_TOP_ADDRESS, 0,
 		  DMCUB_REGION3_CW3_TOP_ADDRESS, cw3->region.top,
 		  DMCUB_REGION3_CW3_ENABLE, 1);
 
 	/* TODO: Move this to CW4. */
+	dmub_dcn20_translate_addr(&cw4->offset, fb_base, fb_offset, &offset);
 
-	REG_WRITE(DMCUB_REGION4_OFFSET, cw4->offset.u.low_part);
-	REG_WRITE(DMCUB_REGION4_OFFSET_HIGH, cw4->offset.u.high_part);
+	REG_WRITE(DMCUB_REGION4_OFFSET, offset.u.low_part);
+	REG_WRITE(DMCUB_REGION4_OFFSET_HIGH, offset.u.high_part);
 	REG_SET_2(DMCUB_REGION4_TOP_ADDRESS, 0, DMCUB_REGION4_TOP_ADDRESS,
 		  cw4->region.top - cw4->region.base - 1, DMCUB_REGION4_ENABLE,
 		  1);
 
-	REG_WRITE(DMCUB_REGION3_CW5_OFFSET, cw5->offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW5_OFFSET_HIGH, cw5->offset.u.high_part);
+	dmub_dcn20_translate_addr(&cw5->offset, fb_base, fb_offset, &offset);
+
+	REG_WRITE(DMCUB_REGION3_CW5_OFFSET, offset.u.low_part);
+	REG_WRITE(DMCUB_REGION3_CW5_OFFSET_HIGH, offset.u.high_part);
 	REG_WRITE(DMCUB_REGION3_CW5_BASE_ADDRESS, cw5->region.base);
 	REG_SET_2(DMCUB_REGION3_CW5_TOP_ADDRESS, 0,
 		  DMCUB_REGION3_CW5_TOP_ADDRESS, cw5->region.top,
 		  DMCUB_REGION3_CW5_ENABLE, 1);
 
-	REG_WRITE(DMCUB_REGION3_CW6_OFFSET, cw6->offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW6_OFFSET_HIGH, cw6->offset.u.high_part);
+	dmub_dcn20_translate_addr(&cw6->offset, fb_base, fb_offset, &offset);
+
+	REG_WRITE(DMCUB_REGION3_CW6_OFFSET, offset.u.low_part);
+	REG_WRITE(DMCUB_REGION3_CW6_OFFSET_HIGH, offset.u.high_part);
 	REG_WRITE(DMCUB_REGION3_CW6_BASE_ADDRESS, cw6->region.base);
 	REG_SET_2(DMCUB_REGION3_CW6_TOP_ADDRESS, 0,
 		  DMCUB_REGION3_CW6_TOP_ADDRESS, cw6->region.top,
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.c
index 770d585168aa..5bed9fcd6b5c 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.c
@@ -51,102 +51,7 @@ const struct dmub_srv_common_regs dmub_srv_dcn21_regs = {
 #undef DMUB_SF
 };
 
-static inline void dmub_dcn21_translate_addr(const union dmub_addr *addr_in,
-					     uint64_t fb_base,
-					     uint64_t fb_offset,
-					     union dmub_addr *addr_out)
-{
-	addr_out->quad_part = addr_in->quad_part - fb_base + fb_offset;
-}
-
-void dmub_dcn21_backdoor_load(struct dmub_srv *dmub,
-			      const struct dmub_window *cw0,
-			      const struct dmub_window *cw1)
-{
-	union dmub_addr offset;
-	uint64_t fb_base = dmub->fb_base, fb_offset = dmub->fb_offset;
-
-	REG_UPDATE(DMCUB_SEC_CNTL, DMCUB_SEC_RESET, 1);
-	REG_UPDATE_2(DMCUB_MEM_CNTL, DMCUB_MEM_READ_SPACE, 0x3,
-		     DMCUB_MEM_WRITE_SPACE, 0x3);
-
-	dmub_dcn21_translate_addr(&cw0->offset, fb_base, fb_offset, &offset);
-
-	REG_WRITE(DMCUB_REGION3_CW0_OFFSET, offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW0_OFFSET_HIGH, offset.u.high_part);
-	REG_WRITE(DMCUB_REGION3_CW0_BASE_ADDRESS, cw0->region.base);
-	REG_SET_2(DMCUB_REGION3_CW0_TOP_ADDRESS, 0,
-		  DMCUB_REGION3_CW0_TOP_ADDRESS, cw0->region.top,
-		  DMCUB_REGION3_CW0_ENABLE, 1);
-
-	dmub_dcn21_translate_addr(&cw1->offset, fb_base, fb_offset, &offset);
-
-	REG_WRITE(DMCUB_REGION3_CW1_OFFSET, offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW1_OFFSET_HIGH, offset.u.high_part);
-	REG_WRITE(DMCUB_REGION3_CW1_BASE_ADDRESS, cw1->region.base);
-	REG_SET_2(DMCUB_REGION3_CW1_TOP_ADDRESS, 0,
-		  DMCUB_REGION3_CW1_TOP_ADDRESS, cw1->region.top,
-		  DMCUB_REGION3_CW1_ENABLE, 1);
-
-	REG_UPDATE_2(DMCUB_SEC_CNTL, DMCUB_SEC_RESET, 0, DMCUB_MEM_UNIT_ID,
-		     0x20);
-}
-
-void dmub_dcn21_setup_windows(struct dmub_srv *dmub,
-			      const struct dmub_window *cw2,
-			      const struct dmub_window *cw3,
-			      const struct dmub_window *cw4,
-			      const struct dmub_window *cw5,
-			      const struct dmub_window *cw6)
-{
-	union dmub_addr offset;
-	uint64_t fb_base = dmub->fb_base, fb_offset = dmub->fb_offset;
-
-	dmub_dcn21_translate_addr(&cw2->offset, fb_base, fb_offset, &offset);
-
-	REG_WRITE(DMCUB_REGION3_CW2_OFFSET, offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW2_OFFSET_HIGH, offset.u.high_part);
-	REG_WRITE(DMCUB_REGION3_CW2_BASE_ADDRESS, cw2->region.base);
-	REG_SET_2(DMCUB_REGION3_CW2_TOP_ADDRESS, 0,
-		  DMCUB_REGION3_CW2_TOP_ADDRESS, cw2->region.top,
-		  DMCUB_REGION3_CW2_ENABLE, 1);
-
-	dmub_dcn21_translate_addr(&cw3->offset, fb_base, fb_offset, &offset);
-
-	REG_WRITE(DMCUB_REGION3_CW3_OFFSET, offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW3_OFFSET_HIGH, offset.u.high_part);
-	REG_WRITE(DMCUB_REGION3_CW3_BASE_ADDRESS, cw3->region.base);
-	REG_SET_2(DMCUB_REGION3_CW3_TOP_ADDRESS, 0,
-		  DMCUB_REGION3_CW3_TOP_ADDRESS, cw3->region.top,
-		  DMCUB_REGION3_CW3_ENABLE, 1);
-
-	/* TODO: Move this to CW4. */
-	dmub_dcn21_translate_addr(&cw4->offset, fb_base, fb_offset, &offset);
-
-	REG_WRITE(DMCUB_REGION4_OFFSET, offset.u.low_part);
-	REG_WRITE(DMCUB_REGION4_OFFSET_HIGH, offset.u.high_part);
-	REG_SET_2(DMCUB_REGION4_TOP_ADDRESS, 0, DMCUB_REGION4_TOP_ADDRESS,
-		  cw4->region.top - cw4->region.base - 1, DMCUB_REGION4_ENABLE,
-		  1);
-
-	dmub_dcn21_translate_addr(&cw5->offset, fb_base, fb_offset, &offset);
-
-	REG_WRITE(DMCUB_REGION3_CW5_OFFSET, offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW5_OFFSET_HIGH, offset.u.high_part);
-	REG_WRITE(DMCUB_REGION3_CW5_BASE_ADDRESS, cw5->region.base);
-	REG_SET_2(DMCUB_REGION3_CW5_TOP_ADDRESS, 0,
-		  DMCUB_REGION3_CW5_TOP_ADDRESS, cw5->region.top,
-		  DMCUB_REGION3_CW5_ENABLE, 1);
-
-	dmub_dcn21_translate_addr(&cw6->offset, fb_base, fb_offset, &offset);
-
-	REG_WRITE(DMCUB_REGION3_CW6_OFFSET, offset.u.low_part);
-	REG_WRITE(DMCUB_REGION3_CW6_OFFSET_HIGH, offset.u.high_part);
-	REG_WRITE(DMCUB_REGION3_CW6_BASE_ADDRESS, cw6->region.base);
-	REG_SET_2(DMCUB_REGION3_CW6_TOP_ADDRESS, 0,
-		  DMCUB_REGION3_CW6_TOP_ADDRESS, cw6->region.top,
-		  DMCUB_REGION3_CW6_ENABLE, 1);
-}
+/* Shared functions. */
 
 bool dmub_dcn21_is_auto_load_done(struct dmub_srv *dmub)
 {
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.h b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.h
index 0728b74b68cf..2bbea237137b 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.h
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.h
@@ -34,17 +34,6 @@ extern const struct dmub_srv_common_regs dmub_srv_dcn21_regs;
 
 /* Hardware functions. */
 
-void dmub_dcn21_backdoor_load(struct dmub_srv *dmub,
-			      const struct dmub_window *cw0,
-			      const struct dmub_window *cw1);
-
-void dmub_dcn21_setup_windows(struct dmub_srv *dmub,
-			      const struct dmub_window *cw2,
-			      const struct dmub_window *cw3,
-			      const struct dmub_window *cw4,
-			      const struct dmub_window *cw5,
-			      const struct dmub_window *cw6);
-
 bool dmub_dcn21_is_auto_load_done(struct dmub_srv *dmub);
 
 bool dmub_dcn21_is_phy_init(struct dmub_srv *dmub);
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
index f530325a221f..16837003721e 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
@@ -84,8 +84,6 @@ static bool dmub_srv_hw_setup(struct dmub_srv *dmub, enum dmub_asic asic)
 		if (asic == DMUB_ASIC_DCN21) {
 			dmub->regs = &dmub_srv_dcn21_regs;
 
-			funcs->backdoor_load = dmub_dcn21_backdoor_load;
-			funcs->setup_windows = dmub_dcn21_setup_windows;
 			funcs->is_auto_load_done = dmub_dcn21_is_auto_load_done;
 			funcs->is_phy_init = dmub_dcn21_is_phy_init;
 		}