drm/amd/display: Add DCN3 MMHUBHUB

Add support to program the DCN3 MMHUBBUB (Multimedia HUB interface)

HW Blocks:

 +--------++------+       +----------+
 | HUBBUB || HUBP |  <--  | MMHUBBUB |
 +--------++------+       +----------+
        |
        v
    +--------+
    |  DPP   |
    +--------+
        |
        v
    +--------+
    |  MPC   |
    +--------+
        |
        v
    +-------+
    |  OPP  |
    +-------+
        |
        v
    +--------+
    |  OPTC  |
    +--------+
        |
        v
    +--------+       +--------+
    |  DIO   |       |  DCCG  |
    +--------+       +--------+

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 239 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mmhubbub.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mmhubbub.c
new file mode 100644
index 000000000000..1c4b171c68ad
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mmhubbub.c
@@ -0,0 +1,239 @@
+/*
+ * Copyright 2020 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 "reg_helper.h"
+#include "resource.h"
+#include "mcif_wb.h"
+#include "dcn30_mmhubbub.h"
+
+
+#define REG(reg)\
+	mcif_wb30->mcif_wb_regs->reg
+
+#define CTX \
+	mcif_wb30->base.ctx
+
+#undef FN
+#define FN(reg_name, field_name) \
+	mcif_wb30->mcif_wb_shift->field_name, mcif_wb30->mcif_wb_mask->field_name
+
+#define MCIF_ADDR(addr) (((unsigned long long)addr & 0xffffffffff) + 0xFE) >> 8
+#define MCIF_ADDR_HIGH(addr) (unsigned long long)addr >> 40
+
+/* wbif programming guide:
+ * 1. set up wbif parameter:
+ *    unsigned long long   luma_address[4];       //4 frame buffer
+ *    unsigned long long   chroma_address[4];
+ *    unsigned int	   luma_pitch;
+ *    unsigned int	   chroma_pitch;
+ *    unsigned int         warmup_pitch=0x10;     //256B align, the page size is 4KB when it is 0x10
+ *    unsigned int	   slice_lines;           //slice size
+ *    unsigned int         time_per_pixel;        // time per pixel, in ns
+ *    unsigned int         arbitration_slice;     // 0: 2048 bytes 1: 4096 bytes 2: 8192 Bytes
+ *    unsigned int         max_scaled_time;       // used for QOS generation
+ *    unsigned int         swlock=0x0;
+ *    unsigned int         cli_watermark[4];      //4 group urgent watermark
+ *    unsigned int         pstate_watermark[4];   //4 group pstate watermark
+ *    unsigned int         sw_int_en;             // Software interrupt enable, frame end and overflow
+ *    unsigned int         sw_slice_int_en;       // slice end interrupt enable
+ *    unsigned int         sw_overrun_int_en;     // overrun error interrupt enable
+ *    unsigned int         vce_int_en;            // VCE interrupt enable, frame end and overflow
+ *    unsigned int         vce_slice_int_en;      // VCE slice end interrupt enable, frame end and overflow
+ *
+ * 2. configure wbif register
+ *    a. call mmhubbub_config_wbif()
+ *
+ * 3. Enable wbif
+ *    call set_wbif_bufmgr_enable();
+ *
+ * 4. wbif_dump_status(), option, for debug purpose
+ *    the bufmgr status can show the progress of write back, can be used for debug purpose
+ */
+
+static void mmhubbub3_warmup_mcif(struct mcif_wb *mcif_wb,
+		struct mcif_warmup_params *params)
+{
+	struct dcn30_mmhubbub *mcif_wb30 = TO_DCN30_MMHUBBUB(mcif_wb);
+	union large_integer start_address_shift = {.quad_part = params->start_address.quad_part >> 5};
+
+	/* Set base address and region size for warmup */
+	REG_SET(MMHUBBUB_WARMUP_BASE_ADDR_HIGH, 0, MMHUBBUB_WARMUP_BASE_ADDR_HIGH, start_address_shift.high_part);
+	REG_SET(MMHUBBUB_WARMUP_BASE_ADDR_LOW, 0, MMHUBBUB_WARMUP_BASE_ADDR_LOW, start_address_shift.low_part);
+	REG_SET(MMHUBBUB_WARMUP_ADDR_REGION, 0, MMHUBBUB_WARMUP_ADDR_REGION, params->region_size >> 5);
+//	REG_SET(MMHUBBUB_WARMUP_P_VMID, 0, MMHUBBUB_WARMUP_P_VMID, params->p_vmid);
+
+	/* Set address increment and enable warmup */
+	REG_SET_3(MMHUBBUB_WARMUP_CONTROL_STATUS, 0, MMHUBBUB_WARMUP_EN, true,
+			MMHUBBUB_WARMUP_SW_INT_EN, true,
+			MMHUBBUB_WARMUP_INC_ADDR, params->address_increment >> 5);
+
+	/* Wait for an interrupt to signal warmup is completed */
+	REG_WAIT(MMHUBBUB_WARMUP_CONTROL_STATUS, MMHUBBUB_WARMUP_SW_INT_STATUS, 1, 20, 100);
+
+	/* Acknowledge interrupt */
+	REG_UPDATE(MMHUBBUB_WARMUP_CONTROL_STATUS, MMHUBBUB_WARMUP_SW_INT_ACK, 1);
+
+	/* Disable warmup */
+	REG_UPDATE(MMHUBBUB_WARMUP_CONTROL_STATUS, MMHUBBUB_WARMUP_EN, false);
+}
+
+void mmhubbub3_config_mcif_buf(struct mcif_wb *mcif_wb,
+		struct mcif_buf_params *params,
+		unsigned int dest_height)
+{
+	struct dcn30_mmhubbub *mcif_wb30 = TO_DCN30_MMHUBBUB(mcif_wb);
+
+	/* buffer address for packing mode or Luma in planar mode */
+	REG_UPDATE(MCIF_WB_BUF_1_ADDR_Y, MCIF_WB_BUF_1_ADDR_Y, MCIF_ADDR(params->luma_address[0]));
+	REG_UPDATE(MCIF_WB_BUF_1_ADDR_Y_HIGH, MCIF_WB_BUF_1_ADDR_Y_HIGH, MCIF_ADDR_HIGH(params->luma_address[0]));
+
+	/* buffer address for Chroma in planar mode (unused in packing mode) */
+	REG_UPDATE(MCIF_WB_BUF_1_ADDR_C, MCIF_WB_BUF_1_ADDR_C, MCIF_ADDR(params->chroma_address[0]));
+	REG_UPDATE(MCIF_WB_BUF_1_ADDR_C_HIGH, MCIF_WB_BUF_1_ADDR_C_HIGH, MCIF_ADDR_HIGH(params->chroma_address[0]));
+
+	/* buffer address for packing mode or Luma in planar mode */
+	REG_UPDATE(MCIF_WB_BUF_2_ADDR_Y, MCIF_WB_BUF_2_ADDR_Y, MCIF_ADDR(params->luma_address[1]));
+	REG_UPDATE(MCIF_WB_BUF_2_ADDR_Y_HIGH, MCIF_WB_BUF_2_ADDR_Y_HIGH, MCIF_ADDR_HIGH(params->luma_address[1]));
+
+	/* buffer address for Chroma in planar mode (unused in packing mode) */
+	REG_UPDATE(MCIF_WB_BUF_2_ADDR_C, MCIF_WB_BUF_2_ADDR_C, MCIF_ADDR(params->chroma_address[1]));
+	REG_UPDATE(MCIF_WB_BUF_2_ADDR_C_HIGH, MCIF_WB_BUF_2_ADDR_C_HIGH, MCIF_ADDR_HIGH(params->chroma_address[1]));
+
+	/* buffer address for packing mode or Luma in planar mode */
+	REG_UPDATE(MCIF_WB_BUF_3_ADDR_Y, MCIF_WB_BUF_3_ADDR_Y, MCIF_ADDR(params->luma_address[2]));
+	REG_UPDATE(MCIF_WB_BUF_3_ADDR_Y_HIGH, MCIF_WB_BUF_3_ADDR_Y_HIGH, MCIF_ADDR_HIGH(params->luma_address[2]));
+
+	/* buffer address for Chroma in planar mode (unused in packing mode) */
+	REG_UPDATE(MCIF_WB_BUF_3_ADDR_C, MCIF_WB_BUF_3_ADDR_C, MCIF_ADDR(params->chroma_address[2]));
+	REG_UPDATE(MCIF_WB_BUF_3_ADDR_C_HIGH, MCIF_WB_BUF_3_ADDR_C_HIGH, MCIF_ADDR_HIGH(params->chroma_address[2]));
+
+	/* buffer address for packing mode or Luma in planar mode */
+	REG_UPDATE(MCIF_WB_BUF_4_ADDR_Y, MCIF_WB_BUF_4_ADDR_Y, MCIF_ADDR(params->luma_address[3]));
+	REG_UPDATE(MCIF_WB_BUF_4_ADDR_Y_HIGH, MCIF_WB_BUF_4_ADDR_Y_HIGH, MCIF_ADDR_HIGH(params->luma_address[3]));
+
+	/* buffer address for Chroma in planar mode (unused in packing mode) */
+	REG_UPDATE(MCIF_WB_BUF_4_ADDR_C, MCIF_WB_BUF_4_ADDR_C, MCIF_ADDR(params->chroma_address[3]));
+	REG_UPDATE(MCIF_WB_BUF_4_ADDR_C_HIGH, MCIF_WB_BUF_4_ADDR_C_HIGH, MCIF_ADDR_HIGH(params->chroma_address[3]));
+
+	/* setup luma & chroma size
+	 * should be enough to contain a whole frame Luma data,
+	 * the programmed value is frame buffer size [27:8], 256-byte aligned
+	 */
+	REG_UPDATE(MCIF_WB_BUF_LUMA_SIZE, MCIF_WB_BUF_LUMA_SIZE, (params->luma_pitch>>8) * dest_height);
+	REG_UPDATE(MCIF_WB_BUF_CHROMA_SIZE, MCIF_WB_BUF_CHROMA_SIZE, (params->chroma_pitch>>8) * dest_height);
+
+	/* enable address fence */
+	REG_UPDATE(MCIF_WB_BUFMGR_SW_CONTROL, MCIF_WB_BUF_ADDR_FENCE_EN, 1);
+
+	/* setup pitch, the programmed value is [15:8], 256B align */
+	REG_UPDATE_2(MCIF_WB_BUF_PITCH, MCIF_WB_BUF_LUMA_PITCH, params->luma_pitch >> 8,
+			MCIF_WB_BUF_CHROMA_PITCH, params->chroma_pitch >> 8);
+}
+
+static void mmhubbub3_config_mcif_arb(struct mcif_wb *mcif_wb,
+		struct mcif_arb_params *params)
+{
+	struct dcn30_mmhubbub *mcif_wb30 = TO_DCN30_MMHUBBUB(mcif_wb);
+
+	/* Programmed by the video driver based on the CRTC timing (for DWB) */
+	REG_UPDATE(MCIF_WB_ARBITRATION_CONTROL, MCIF_WB_TIME_PER_PIXEL, params->time_per_pixel);
+
+	/* Programming dwb watermark */
+	/* Watermark to generate urgent in MCIF_WB_CLI, value is determined by MCIF_WB_CLI_WATERMARK_MASK. */
+	/* Program in ns. A formula will be provided in the pseudo code to calculate the value. */
+	REG_UPDATE(MCIF_WB_WATERMARK, MCIF_WB_CLI_WATERMARK_MASK, 0x0);
+	/* urgent_watermarkA */
+	REG_UPDATE(MCIF_WB_WATERMARK, MCIF_WB_CLI_WATERMARK,  params->cli_watermark[0]);
+	REG_UPDATE(MCIF_WB_WATERMARK, MCIF_WB_CLI_WATERMARK_MASK, 0x1);
+	/* urgent_watermarkB */
+	REG_UPDATE(MCIF_WB_WATERMARK, MCIF_WB_CLI_WATERMARK,  params->cli_watermark[1]);
+	REG_UPDATE(MCIF_WB_WATERMARK, MCIF_WB_CLI_WATERMARK_MASK, 0x2);
+	/* urgent_watermarkC */
+	REG_UPDATE(MCIF_WB_WATERMARK, MCIF_WB_CLI_WATERMARK,  params->cli_watermark[2]);
+	REG_UPDATE(MCIF_WB_WATERMARK, MCIF_WB_CLI_WATERMARK_MASK, 0x3);
+	/* urgent_watermarkD */
+	REG_UPDATE(MCIF_WB_WATERMARK, MCIF_WB_CLI_WATERMARK,  params->cli_watermark[3]);
+
+	/* Programming nb pstate watermark */
+	/* nbp_state_change_watermarkA */
+	REG_UPDATE(MCIF_WB_NB_PSTATE_LATENCY_WATERMARK, NB_PSTATE_CHANGE_WATERMARK_MASK, 0x0);
+	REG_UPDATE(MCIF_WB_NB_PSTATE_LATENCY_WATERMARK,
+			NB_PSTATE_CHANGE_REFRESH_WATERMARK, params->pstate_watermark[0]);
+	/* nbp_state_change_watermarkB */
+	REG_UPDATE(MCIF_WB_NB_PSTATE_LATENCY_WATERMARK, NB_PSTATE_CHANGE_WATERMARK_MASK, 0x1);
+	REG_UPDATE(MCIF_WB_NB_PSTATE_LATENCY_WATERMARK,
+			NB_PSTATE_CHANGE_REFRESH_WATERMARK, params->pstate_watermark[1]);
+	/* nbp_state_change_watermarkC */
+	REG_UPDATE(MCIF_WB_NB_PSTATE_LATENCY_WATERMARK, NB_PSTATE_CHANGE_WATERMARK_MASK, 0x2);
+	REG_UPDATE(MCIF_WB_NB_PSTATE_LATENCY_WATERMARK,
+			NB_PSTATE_CHANGE_REFRESH_WATERMARK, params->pstate_watermark[2]);
+	/* nbp_state_change_watermarkD */
+	REG_UPDATE(MCIF_WB_NB_PSTATE_LATENCY_WATERMARK, NB_PSTATE_CHANGE_WATERMARK_MASK, 0x3);
+	REG_UPDATE(MCIF_WB_NB_PSTATE_LATENCY_WATERMARK,
+			NB_PSTATE_CHANGE_REFRESH_WATERMARK, params->pstate_watermark[3]);
+
+	/* dram_speed_change_duration */
+	REG_UPDATE(MCIF_WB_DRAM_SPEED_CHANGE_DURATION_VBI,
+			MCIF_WB_DRAM_SPEED_CHANGE_DURATION_VBI, params->dram_speed_change_duration);
+
+	/* max_scaled_time */
+	REG_UPDATE(MULTI_LEVEL_QOS_CTRL, MAX_SCALED_TIME_TO_URGENT, params->max_scaled_time);
+
+	/* slice_lines */
+	REG_UPDATE(MCIF_WB_BUFMGR_VCE_CONTROL, MCIF_WB_BUFMGR_SLICE_SIZE, params->slice_lines-1);
+
+	/* Set arbitration unit for Luma/Chroma */
+	/* arb_unit=2 should be chosen for more efficiency */
+	/* Arbitration size, 0: 2048 bytes 1: 4096 bytes 2: 8192 Bytes */
+	REG_UPDATE(MCIF_WB_ARBITRATION_CONTROL, MCIF_WB_CLIENT_ARBITRATION_SLICE,  params->arbitration_slice);
+}
+
+const struct mcif_wb_funcs dcn30_mmhubbub_funcs = {
+	.warmup_mcif		= mmhubbub3_warmup_mcif,
+	.enable_mcif		= mmhubbub2_enable_mcif,
+	.disable_mcif		= mmhubbub2_disable_mcif,
+	.config_mcif_buf	= mmhubbub3_config_mcif_buf,
+	.config_mcif_arb	= mmhubbub3_config_mcif_arb,
+	.config_mcif_irq	= mmhubbub2_config_mcif_irq,
+	.dump_frame		= mcifwb2_dump_frame,
+};
+
+void dcn30_mmhubbub_construct(struct dcn30_mmhubbub *mcif_wb30,
+		struct dc_context *ctx,
+		const struct dcn30_mmhubbub_registers *mcif_wb_regs,
+		const struct dcn30_mmhubbub_shift *mcif_wb_shift,
+		const struct dcn30_mmhubbub_mask *mcif_wb_mask,
+		int inst)
+{
+	mcif_wb30->base.ctx = ctx;
+
+	mcif_wb30->base.inst = inst;
+	mcif_wb30->base.funcs = &dcn30_mmhubbub_funcs;
+
+	mcif_wb30->mcif_wb_regs = mcif_wb_regs;
+	mcif_wb30->mcif_wb_shift = mcif_wb_shift;
+	mcif_wb30->mcif_wb_mask = mcif_wb_mask;
+}