1 files changed, 384 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c b/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c
new file mode 100644
index 000000000000..654731cccdcd
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c
@@ -0,0 +1,384 @@
+/*
+ * Copyright 2016 Advanced Micro Devices, 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.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "mem_input.h"
+#include "reg_helper.h"
+
+#define CTX \
+	mi->ctx
+#define REG(reg)\
+	mi->regs->reg
+
+#undef FN
+#define FN(reg_name, field_name) \
+	mi->shifts->field_name, mi->masks->field_name
+
+
+static void program_urgency_watermark(struct mem_input *mi,
+	uint32_t wm_select,
+	uint32_t urgency_low_wm,
+	uint32_t urgency_high_wm)
+{
+	REG_UPDATE(DPG_WATERMARK_MASK_CONTROL,
+		URGENCY_WATERMARK_MASK, wm_select);
+
+	REG_SET_2(DPG_PIPE_URGENCY_CONTROL, 0,
+		URGENCY_LOW_WATERMARK, urgency_low_wm,
+		URGENCY_HIGH_WATERMARK, urgency_high_wm);
+}
+
+static void program_nbp_watermark(struct mem_input *mi,
+	uint32_t wm_select,
+	uint32_t nbp_wm)
+{
+	if (REG(DPG_PIPE_NB_PSTATE_CHANGE_CONTROL)) {
+		REG_UPDATE(DPG_WATERMARK_MASK_CONTROL,
+				NB_PSTATE_CHANGE_WATERMARK_MASK, wm_select);
+
+		REG_UPDATE_3(DPG_PIPE_NB_PSTATE_CHANGE_CONTROL,
+				NB_PSTATE_CHANGE_ENABLE, 1,
+				NB_PSTATE_CHANGE_URGENT_DURING_REQUEST, 1,
+				NB_PSTATE_CHANGE_NOT_SELF_REFRESH_DURING_REQUEST, 1);
+
+		REG_UPDATE(DPG_PIPE_NB_PSTATE_CHANGE_CONTROL,
+				NB_PSTATE_CHANGE_WATERMARK, nbp_wm);
+	}
+}
+
+static void program_stutter_watermark(struct mem_input *mi,
+	uint32_t wm_select,
+	uint32_t stutter_mark)
+{
+	REG_UPDATE(DPG_WATERMARK_MASK_CONTROL,
+		STUTTER_EXIT_SELF_REFRESH_WATERMARK_MASK, wm_select);
+
+		REG_UPDATE(DPG_PIPE_STUTTER_CONTROL,
+				STUTTER_EXIT_SELF_REFRESH_WATERMARK, stutter_mark);
+}
+
+void dce_mem_input_program_display_marks(struct mem_input *mi,
+	struct bw_watermarks nbp,
+	struct bw_watermarks stutter,
+	struct bw_watermarks urgent,
+	uint32_t total_dest_line_time_ns)
+{
+	uint32_t stutter_en = mi->ctx->dc->debug.disable_stutter ? 0 : 1;
+
+	program_urgency_watermark(mi, 0, /* set a */
+			urgent.a_mark, total_dest_line_time_ns);
+	program_urgency_watermark(mi, 1, /* set b */
+			urgent.b_mark, total_dest_line_time_ns);
+	program_urgency_watermark(mi, 2, /* set c */
+			urgent.c_mark, total_dest_line_time_ns);
+	program_urgency_watermark(mi, 3, /* set d */
+			urgent.d_mark, total_dest_line_time_ns);
+
+	REG_UPDATE_2(DPG_PIPE_STUTTER_CONTROL,
+		STUTTER_ENABLE, stutter_en,
+		STUTTER_IGNORE_FBC, 1);
+	program_nbp_watermark(mi, 0, nbp.a_mark); /* set a */
+	program_nbp_watermark(mi, 1, nbp.b_mark); /* set b */
+	program_nbp_watermark(mi, 2, nbp.c_mark); /* set c */
+	program_nbp_watermark(mi, 3, nbp.d_mark); /* set d */
+
+	program_stutter_watermark(mi, 0, stutter.a_mark); /* set a */
+	program_stutter_watermark(mi, 1, stutter.b_mark); /* set b */
+	program_stutter_watermark(mi, 2, stutter.c_mark); /* set c */
+	program_stutter_watermark(mi, 3, stutter.d_mark); /* set d */
+}
+
+static void program_tiling(struct mem_input *mi,
+	const union dc_tiling_info *info)
+{
+	if (mi->masks->GRPH_ARRAY_MODE) { /* GFX8 */
+		REG_UPDATE_9(GRPH_CONTROL,
+				GRPH_NUM_BANKS, info->gfx8.num_banks,
+				GRPH_BANK_WIDTH, info->gfx8.bank_width,
+				GRPH_BANK_HEIGHT, info->gfx8.bank_height,
+				GRPH_MACRO_TILE_ASPECT, info->gfx8.tile_aspect,
+				GRPH_TILE_SPLIT, info->gfx8.tile_split,
+				GRPH_MICRO_TILE_MODE, info->gfx8.tile_mode,
+				GRPH_PIPE_CONFIG, info->gfx8.pipe_config,
+				GRPH_ARRAY_MODE, info->gfx8.array_mode,
+				GRPH_COLOR_EXPANSION_MODE, 1);
+		/* 01 - DCP_GRPH_COLOR_EXPANSION_MODE_ZEXP: zero expansion for YCbCr */
+		/*
+				GRPH_Z, 0);
+				*/
+	}
+}
+
+
+static void program_size_and_rotation(
+	struct mem_input *mi,
+	enum dc_rotation_angle rotation,
+	const union plane_size *plane_size)
+{
+	const struct rect *in_rect = &plane_size->grph.surface_size;
+	struct rect hw_rect = plane_size->grph.surface_size;
+	const uint32_t rotation_angles[ROTATION_ANGLE_COUNT] = {
+			[ROTATION_ANGLE_0] = 0,
+			[ROTATION_ANGLE_90] = 1,
+			[ROTATION_ANGLE_180] = 2,
+			[ROTATION_ANGLE_270] = 3,
+	};
+
+	if (rotation == ROTATION_ANGLE_90 || rotation == ROTATION_ANGLE_270) {
+		hw_rect.x = in_rect->y;
+		hw_rect.y = in_rect->x;
+
+		hw_rect.height = in_rect->width;
+		hw_rect.width = in_rect->height;
+	}
+
+	REG_SET(GRPH_X_START, 0,
+			GRPH_X_START, hw_rect.x);
+
+	REG_SET(GRPH_Y_START, 0,
+			GRPH_Y_START, hw_rect.y);
+
+	REG_SET(GRPH_X_END, 0,
+			GRPH_X_END, hw_rect.width);
+
+	REG_SET(GRPH_Y_END, 0,
+			GRPH_Y_END, hw_rect.height);
+
+	REG_SET(GRPH_PITCH, 0,
+			GRPH_PITCH, plane_size->grph.surface_pitch);
+
+	REG_SET(HW_ROTATION, 0,
+			GRPH_ROTATION_ANGLE, rotation_angles[rotation]);
+}
+
+static void program_grph_pixel_format(
+	struct mem_input *mi,
+	enum surface_pixel_format format)
+{
+	uint32_t red_xbar = 0, blue_xbar = 0; /* no swap */
+	uint32_t grph_depth, grph_format;
+	uint32_t sign = 0, floating = 0;
+
+	if (format == SURFACE_PIXEL_FORMAT_GRPH_BGRA8888 ||
+			/*todo: doesn't look like we handle BGRA here,
+			 *  should problem swap endian*/
+		format == SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010 ||
+		format == SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS ||
+		format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F) {
+		/* ABGR formats */
+		red_xbar = 2;
+		blue_xbar = 2;
+	}
+
+	REG_SET_2(GRPH_SWAP_CNTL, 0,
+			GRPH_RED_CROSSBAR, red_xbar,
+			GRPH_BLUE_CROSSBAR, blue_xbar);
+
+	switch (format) {
+	case SURFACE_PIXEL_FORMAT_GRPH_PALETA_256_COLORS:
+		grph_depth = 0;
+		grph_format = 0;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB1555:
+		grph_depth = 1;
+		grph_format = 0;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_RGB565:
+		grph_depth = 1;
+		grph_format = 1;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
+	case SURFACE_PIXEL_FORMAT_GRPH_BGRA8888:
+		grph_depth = 2;
+		grph_format = 0;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB2101010:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010:
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR2101010_XR_BIAS:
+		grph_depth = 2;
+		grph_format = 1;
+		break;
+	case SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F:
+		sign = 1;
+		floating = 1;
+		/* no break */
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F: /* shouldn't this get float too? */
+	case SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616:
+		grph_depth = 3;
+		grph_format = 0;
+		break;
+	default:
+		DC_ERR("unsupported grph pixel format");
+		break;
+	}
+
+	REG_UPDATE_2(GRPH_CONTROL,
+			GRPH_DEPTH, grph_depth,
+			GRPH_FORMAT, grph_format);
+
+	REG_UPDATE_4(PRESCALE_GRPH_CONTROL,
+			GRPH_PRESCALE_SELECT, floating,
+			GRPH_PRESCALE_R_SIGN, sign,
+			GRPH_PRESCALE_G_SIGN, sign,
+			GRPH_PRESCALE_B_SIGN, sign);
+}
+
+bool dce_mem_input_program_surface_config(struct mem_input *mi,
+	enum surface_pixel_format format,
+	union dc_tiling_info *tiling_info,
+	union plane_size *plane_size,
+	enum dc_rotation_angle rotation,
+	struct dc_plane_dcc_param *dcc,
+	bool horizontal_mirror)
+{
+	REG_UPDATE(GRPH_ENABLE, GRPH_ENABLE, 1);
+
+	program_tiling(mi, tiling_info);
+	program_size_and_rotation(mi, rotation, plane_size);
+
+	if (format >= SURFACE_PIXEL_FORMAT_GRPH_BEGIN &&
+		format < SURFACE_PIXEL_FORMAT_VIDEO_BEGIN)
+		program_grph_pixel_format(mi, format);
+
+	return true;
+}
+
+static uint32_t get_dmif_switch_time_us(
+	uint32_t h_total,
+	uint32_t v_total,
+	uint32_t pix_clk_khz)
+{
+	uint32_t frame_time;
+	uint32_t pixels_per_second;
+	uint32_t pixels_per_frame;
+	uint32_t refresh_rate;
+	const uint32_t us_in_sec = 1000000;
+	const uint32_t min_single_frame_time_us = 30000;
+	/*return double of frame time*/
+	const uint32_t single_frame_time_multiplier = 2;
+
+	if (!h_total || v_total || !pix_clk_khz)
+		return single_frame_time_multiplier * min_single_frame_time_us;
+
+	/*TODO: should we use pixel format normalized pixel clock here?*/
+	pixels_per_second = pix_clk_khz * 1000;
+	pixels_per_frame = h_total * v_total;
+
+	if (!pixels_per_second || !pixels_per_frame) {
+		/* avoid division by zero */
+		ASSERT(pixels_per_frame);
+		ASSERT(pixels_per_second);
+		return single_frame_time_multiplier * min_single_frame_time_us;
+	}
+
+	refresh_rate = pixels_per_second / pixels_per_frame;
+
+	if (!refresh_rate) {
+		/* avoid division by zero*/
+		ASSERT(refresh_rate);
+		return single_frame_time_multiplier * min_single_frame_time_us;
+	}
+
+	frame_time = us_in_sec / refresh_rate;
+
+	if (frame_time < min_single_frame_time_us)
+		frame_time = min_single_frame_time_us;
+
+	frame_time *= single_frame_time_multiplier;
+
+	return frame_time;
+}
+
+void dce_mem_input_allocate_dmif(struct mem_input *mi,
+	uint32_t h_total,
+	uint32_t v_total,
+	uint32_t pix_clk_khz,
+	uint32_t total_stream_num)
+{
+	const uint32_t retry_delay = 10;
+	uint32_t retry_count = get_dmif_switch_time_us(
+			h_total,
+			v_total,
+			pix_clk_khz) / retry_delay;
+
+	uint32_t pix_dur;
+	uint32_t buffers_allocated;
+	uint32_t dmif_buffer_control;
+
+	dmif_buffer_control = REG_GET(DMIF_BUFFER_CONTROL,
+			DMIF_BUFFERS_ALLOCATED, &buffers_allocated);
+
+	if (buffers_allocated == 2)
+		return;
+
+	REG_SET(DMIF_BUFFER_CONTROL, dmif_buffer_control,
+			DMIF_BUFFERS_ALLOCATED, 2);
+
+	REG_WAIT(DMIF_BUFFER_CONTROL,
+			DMIF_BUFFERS_ALLOCATION_COMPLETED, 1,
+			retry_delay, retry_count);
+
+	if (pix_clk_khz != 0) {
+		pix_dur = 1000000000ULL / pix_clk_khz;
+
+		REG_UPDATE(DPG_PIPE_ARBITRATION_CONTROL1,
+			PIXEL_DURATION, pix_dur);
+	}
+
+	if (mi->wa.single_head_rdreq_dmif_limit) {
+		uint32_t eanble =  (total_stream_num > 1) ? 0 :
+				mi->wa.single_head_rdreq_dmif_limit;
+
+		REG_UPDATE(MC_HUB_RDREQ_DMIF_LIMIT,
+				ENABLE, eanble);
+	}
+}
+
+void dce_mem_input_free_dmif(struct mem_input *mi,
+		uint32_t total_stream_num)
+{
+	uint32_t buffers_allocated;
+	uint32_t dmif_buffer_control;
+
+	dmif_buffer_control = REG_GET(DMIF_BUFFER_CONTROL,
+			DMIF_BUFFERS_ALLOCATED, &buffers_allocated);
+
+	if (buffers_allocated == 0)
+		return;
+
+	REG_SET(DMIF_BUFFER_CONTROL, dmif_buffer_control,
+			DMIF_BUFFERS_ALLOCATED, 0);
+
+	REG_WAIT(DMIF_BUFFER_CONTROL,
+			DMIF_BUFFERS_ALLOCATION_COMPLETED, 1,
+			10, 0xBB8);
+
+	if (mi->wa.single_head_rdreq_dmif_limit) {
+		uint32_t eanble =  (total_stream_num > 1) ? 0 :
+				mi->wa.single_head_rdreq_dmif_limit;
+
+		REG_UPDATE(MC_HUB_RDREQ_DMIF_LIMIT,
+				ENABLE, eanble);
+	}
+}