1 files changed, 0 insertions, 558 deletions

diff --git a/drivers/gpu/drm/i915/intel_dram.c b/drivers/gpu/drm/i915/intel_dram.c
deleted file mode 100644
index 50fdea84ba70..000000000000
--- a/drivers/gpu/drm/i915/intel_dram.c
+++ /dev/null
@@ -1,558 +0,0 @@
-// SPDX-License-Identifier: MIT
-/*
- * Copyright © 2020 Intel Corporation
- */
-
-#include "i915_drv.h"
-#include "intel_dram.h"
-#include "intel_sideband.h"
-
-struct dram_dimm_info {
-	u16 size;
-	u8 width, ranks;
-};
-
-struct dram_channel_info {
-	struct dram_dimm_info dimm_l, dimm_s;
-	u8 ranks;
-	bool is_16gb_dimm;
-};
-
-#define DRAM_TYPE_STR(type) [INTEL_DRAM_ ## type] = #type
-
-static const char *intel_dram_type_str(enum intel_dram_type type)
-{
-	static const char * const str[] = {
-		DRAM_TYPE_STR(UNKNOWN),
-		DRAM_TYPE_STR(DDR3),
-		DRAM_TYPE_STR(DDR4),
-		DRAM_TYPE_STR(LPDDR3),
-		DRAM_TYPE_STR(LPDDR4),
-	};
-
-	if (type >= ARRAY_SIZE(str))
-		type = INTEL_DRAM_UNKNOWN;
-
-	return str[type];
-}
-
-#undef DRAM_TYPE_STR
-
-static int intel_dimm_num_devices(const struct dram_dimm_info *dimm)
-{
-	return dimm->ranks * 64 / (dimm->width ?: 1);
-}
-
-/* Returns total Gb for the whole DIMM */
-static int skl_get_dimm_size(u16 val)
-{
-	return (val & SKL_DRAM_SIZE_MASK) * 8;
-}
-
-static int skl_get_dimm_width(u16 val)
-{
-	if (skl_get_dimm_size(val) == 0)
-		return 0;
-
-	switch (val & SKL_DRAM_WIDTH_MASK) {
-	case SKL_DRAM_WIDTH_X8:
-	case SKL_DRAM_WIDTH_X16:
-	case SKL_DRAM_WIDTH_X32:
-		val = (val & SKL_DRAM_WIDTH_MASK) >> SKL_DRAM_WIDTH_SHIFT;
-		return 8 << val;
-	default:
-		MISSING_CASE(val);
-		return 0;
-	}
-}
-
-static int skl_get_dimm_ranks(u16 val)
-{
-	if (skl_get_dimm_size(val) == 0)
-		return 0;
-
-	val = (val & SKL_DRAM_RANK_MASK) >> SKL_DRAM_RANK_SHIFT;
-
-	return val + 1;
-}
-
-/* Returns total Gb for the whole DIMM */
-static int cnl_get_dimm_size(u16 val)
-{
-	return (val & CNL_DRAM_SIZE_MASK) * 8 / 2;
-}
-
-static int cnl_get_dimm_width(u16 val)
-{
-	if (cnl_get_dimm_size(val) == 0)
-		return 0;
-
-	switch (val & CNL_DRAM_WIDTH_MASK) {
-	case CNL_DRAM_WIDTH_X8:
-	case CNL_DRAM_WIDTH_X16:
-	case CNL_DRAM_WIDTH_X32:
-		val = (val & CNL_DRAM_WIDTH_MASK) >> CNL_DRAM_WIDTH_SHIFT;
-		return 8 << val;
-	default:
-		MISSING_CASE(val);
-		return 0;
-	}
-}
-
-static int cnl_get_dimm_ranks(u16 val)
-{
-	if (cnl_get_dimm_size(val) == 0)
-		return 0;
-
-	val = (val & CNL_DRAM_RANK_MASK) >> CNL_DRAM_RANK_SHIFT;
-
-	return val + 1;
-}
-
-static bool
-skl_is_16gb_dimm(const struct dram_dimm_info *dimm)
-{
-	/* Convert total Gb to Gb per DRAM device */
-	return dimm->size / (intel_dimm_num_devices(dimm) ?: 1) == 16;
-}
-
-static void
-skl_dram_get_dimm_info(struct drm_i915_private *i915,
-		       struct dram_dimm_info *dimm,
-		       int channel, char dimm_name, u16 val)
-{
-	if (GRAPHICS_VER(i915) >= 10) {
-		dimm->size = cnl_get_dimm_size(val);
-		dimm->width = cnl_get_dimm_width(val);
-		dimm->ranks = cnl_get_dimm_ranks(val);
-	} else {
-		dimm->size = skl_get_dimm_size(val);
-		dimm->width = skl_get_dimm_width(val);
-		dimm->ranks = skl_get_dimm_ranks(val);
-	}
-
-	drm_dbg_kms(&i915->drm,
-		    "CH%u DIMM %c size: %u Gb, width: X%u, ranks: %u, 16Gb DIMMs: %s\n",
-		    channel, dimm_name, dimm->size, dimm->width, dimm->ranks,
-		    yesno(skl_is_16gb_dimm(dimm)));
-}
-
-static int
-skl_dram_get_channel_info(struct drm_i915_private *i915,
-			  struct dram_channel_info *ch,
-			  int channel, u32 val)
-{
-	skl_dram_get_dimm_info(i915, &ch->dimm_l,
-			       channel, 'L', val & 0xffff);
-	skl_dram_get_dimm_info(i915, &ch->dimm_s,
-			       channel, 'S', val >> 16);
-
-	if (ch->dimm_l.size == 0 && ch->dimm_s.size == 0) {
-		drm_dbg_kms(&i915->drm, "CH%u not populated\n", channel);
-		return -EINVAL;
-	}
-
-	if (ch->dimm_l.ranks == 2 || ch->dimm_s.ranks == 2)
-		ch->ranks = 2;
-	else if (ch->dimm_l.ranks == 1 && ch->dimm_s.ranks == 1)
-		ch->ranks = 2;
-	else
-		ch->ranks = 1;
-
-	ch->is_16gb_dimm = skl_is_16gb_dimm(&ch->dimm_l) ||
-		skl_is_16gb_dimm(&ch->dimm_s);
-
-	drm_dbg_kms(&i915->drm, "CH%u ranks: %u, 16Gb DIMMs: %s\n",
-		    channel, ch->ranks, yesno(ch->is_16gb_dimm));
-
-	return 0;
-}
-
-static bool
-intel_is_dram_symmetric(const struct dram_channel_info *ch0,
-			const struct dram_channel_info *ch1)
-{
-	return !memcmp(ch0, ch1, sizeof(*ch0)) &&
-		(ch0->dimm_s.size == 0 ||
-		 !memcmp(&ch0->dimm_l, &ch0->dimm_s, sizeof(ch0->dimm_l)));
-}
-
-static int
-skl_dram_get_channels_info(struct drm_i915_private *i915)
-{
-	struct dram_info *dram_info = &i915->dram_info;
-	struct dram_channel_info ch0 = {}, ch1 = {};
-	u32 val;
-	int ret;
-
-	val = intel_uncore_read(&i915->uncore,
-				SKL_MAD_DIMM_CH0_0_0_0_MCHBAR_MCMAIN);
-	ret = skl_dram_get_channel_info(i915, &ch0, 0, val);
-	if (ret == 0)
-		dram_info->num_channels++;
-
-	val = intel_uncore_read(&i915->uncore,
-				SKL_MAD_DIMM_CH1_0_0_0_MCHBAR_MCMAIN);
-	ret = skl_dram_get_channel_info(i915, &ch1, 1, val);
-	if (ret == 0)
-		dram_info->num_channels++;
-
-	if (dram_info->num_channels == 0) {
-		drm_info(&i915->drm, "Number of memory channels is zero\n");
-		return -EINVAL;
-	}
-
-	if (ch0.ranks == 0 && ch1.ranks == 0) {
-		drm_info(&i915->drm, "couldn't get memory rank information\n");
-		return -EINVAL;
-	}
-
-	dram_info->wm_lv_0_adjust_needed = ch0.is_16gb_dimm || ch1.is_16gb_dimm;
-
-	dram_info->symmetric_memory = intel_is_dram_symmetric(&ch0, &ch1);
-
-	drm_dbg_kms(&i915->drm, "Memory configuration is symmetric? %s\n",
-		    yesno(dram_info->symmetric_memory));
-
-	return 0;
-}
-
-static enum intel_dram_type
-skl_get_dram_type(struct drm_i915_private *i915)
-{
-	u32 val;
-
-	val = intel_uncore_read(&i915->uncore,
-				SKL_MAD_INTER_CHANNEL_0_0_0_MCHBAR_MCMAIN);
-
-	switch (val & SKL_DRAM_DDR_TYPE_MASK) {
-	case SKL_DRAM_DDR_TYPE_DDR3:
-		return INTEL_DRAM_DDR3;
-	case SKL_DRAM_DDR_TYPE_DDR4:
-		return INTEL_DRAM_DDR4;
-	case SKL_DRAM_DDR_TYPE_LPDDR3:
-		return INTEL_DRAM_LPDDR3;
-	case SKL_DRAM_DDR_TYPE_LPDDR4:
-		return INTEL_DRAM_LPDDR4;
-	default:
-		MISSING_CASE(val);
-		return INTEL_DRAM_UNKNOWN;
-	}
-}
-
-static int
-skl_get_dram_info(struct drm_i915_private *i915)
-{
-	struct dram_info *dram_info = &i915->dram_info;
-	u32 mem_freq_khz, val;
-	int ret;
-
-	dram_info->type = skl_get_dram_type(i915);
-	drm_dbg_kms(&i915->drm, "DRAM type: %s\n",
-		    intel_dram_type_str(dram_info->type));
-
-	ret = skl_dram_get_channels_info(i915);
-	if (ret)
-		return ret;
-
-	val = intel_uncore_read(&i915->uncore,
-				SKL_MC_BIOS_DATA_0_0_0_MCHBAR_PCU);
-	mem_freq_khz = DIV_ROUND_UP((val & SKL_REQ_DATA_MASK) *
-				    SKL_MEMORY_FREQ_MULTIPLIER_HZ, 1000);
-
-	if (dram_info->num_channels * mem_freq_khz == 0) {
-		drm_info(&i915->drm,
-			 "Couldn't get system memory bandwidth\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/* Returns Gb per DRAM device */
-static int bxt_get_dimm_size(u32 val)
-{
-	switch (val & BXT_DRAM_SIZE_MASK) {
-	case BXT_DRAM_SIZE_4GBIT:
-		return 4;
-	case BXT_DRAM_SIZE_6GBIT:
-		return 6;
-	case BXT_DRAM_SIZE_8GBIT:
-		return 8;
-	case BXT_DRAM_SIZE_12GBIT:
-		return 12;
-	case BXT_DRAM_SIZE_16GBIT:
-		return 16;
-	default:
-		MISSING_CASE(val);
-		return 0;
-	}
-}
-
-static int bxt_get_dimm_width(u32 val)
-{
-	if (!bxt_get_dimm_size(val))
-		return 0;
-
-	val = (val & BXT_DRAM_WIDTH_MASK) >> BXT_DRAM_WIDTH_SHIFT;
-
-	return 8 << val;
-}
-
-static int bxt_get_dimm_ranks(u32 val)
-{
-	if (!bxt_get_dimm_size(val))
-		return 0;
-
-	switch (val & BXT_DRAM_RANK_MASK) {
-	case BXT_DRAM_RANK_SINGLE:
-		return 1;
-	case BXT_DRAM_RANK_DUAL:
-		return 2;
-	default:
-		MISSING_CASE(val);
-		return 0;
-	}
-}
-
-static enum intel_dram_type bxt_get_dimm_type(u32 val)
-{
-	if (!bxt_get_dimm_size(val))
-		return INTEL_DRAM_UNKNOWN;
-
-	switch (val & BXT_DRAM_TYPE_MASK) {
-	case BXT_DRAM_TYPE_DDR3:
-		return INTEL_DRAM_DDR3;
-	case BXT_DRAM_TYPE_LPDDR3:
-		return INTEL_DRAM_LPDDR3;
-	case BXT_DRAM_TYPE_DDR4:
-		return INTEL_DRAM_DDR4;
-	case BXT_DRAM_TYPE_LPDDR4:
-		return INTEL_DRAM_LPDDR4;
-	default:
-		MISSING_CASE(val);
-		return INTEL_DRAM_UNKNOWN;
-	}
-}
-
-static void bxt_get_dimm_info(struct dram_dimm_info *dimm, u32 val)
-{
-	dimm->width = bxt_get_dimm_width(val);
-	dimm->ranks = bxt_get_dimm_ranks(val);
-
-	/*
-	 * Size in register is Gb per DRAM device. Convert to total
-	 * Gb to match the way we report this for non-LP platforms.
-	 */
-	dimm->size = bxt_get_dimm_size(val) * intel_dimm_num_devices(dimm);
-}
-
-static int bxt_get_dram_info(struct drm_i915_private *i915)
-{
-	struct dram_info *dram_info = &i915->dram_info;
-	u32 dram_channels;
-	u32 mem_freq_khz, val;
-	u8 num_active_channels, valid_ranks = 0;
-	int i;
-
-	val = intel_uncore_read(&i915->uncore, BXT_P_CR_MC_BIOS_REQ_0_0_0);
-	mem_freq_khz = DIV_ROUND_UP((val & BXT_REQ_DATA_MASK) *
-				    BXT_MEMORY_FREQ_MULTIPLIER_HZ, 1000);
-
-	dram_channels = val & BXT_DRAM_CHANNEL_ACTIVE_MASK;
-	num_active_channels = hweight32(dram_channels);
-
-	if (mem_freq_khz * num_active_channels == 0) {
-		drm_info(&i915->drm,
-			 "Couldn't get system memory bandwidth\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Now read each DUNIT8/9/10/11 to check the rank of each dimms.
-	 */
-	for (i = BXT_D_CR_DRP0_DUNIT_START; i <= BXT_D_CR_DRP0_DUNIT_END; i++) {
-		struct dram_dimm_info dimm;
-		enum intel_dram_type type;
-
-		val = intel_uncore_read(&i915->uncore, BXT_D_CR_DRP0_DUNIT(i));
-		if (val == 0xFFFFFFFF)
-			continue;
-
-		dram_info->num_channels++;
-
-		bxt_get_dimm_info(&dimm, val);
-		type = bxt_get_dimm_type(val);
-
-		drm_WARN_ON(&i915->drm, type != INTEL_DRAM_UNKNOWN &&
-			    dram_info->type != INTEL_DRAM_UNKNOWN &&
-			    dram_info->type != type);
-
-		drm_dbg_kms(&i915->drm,
-			    "CH%u DIMM size: %u Gb, width: X%u, ranks: %u, type: %s\n",
-			    i - BXT_D_CR_DRP0_DUNIT_START,
-			    dimm.size, dimm.width, dimm.ranks,
-			    intel_dram_type_str(type));
-
-		if (valid_ranks == 0)
-			valid_ranks = dimm.ranks;
-
-		if (type != INTEL_DRAM_UNKNOWN)
-			dram_info->type = type;
-	}
-
-	if (dram_info->type == INTEL_DRAM_UNKNOWN || valid_ranks == 0) {
-		drm_info(&i915->drm, "couldn't get memory information\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int icl_pcode_read_mem_global_info(struct drm_i915_private *dev_priv)
-{
-	struct dram_info *dram_info = &dev_priv->dram_info;
-	u32 val = 0;
-	int ret;
-
-	ret = sandybridge_pcode_read(dev_priv,
-				     ICL_PCODE_MEM_SUBSYSYSTEM_INFO |
-				     ICL_PCODE_MEM_SS_READ_GLOBAL_INFO,
-				     &val, NULL);
-	if (ret)
-		return ret;
-
-	if (GRAPHICS_VER(dev_priv) == 12) {
-		switch (val & 0xf) {
-		case 0:
-			dram_info->type = INTEL_DRAM_DDR4;
-			break;
-		case 1:
-			dram_info->type = INTEL_DRAM_DDR5;
-			break;
-		case 2:
-			dram_info->type = INTEL_DRAM_LPDDR5;
-			break;
-		case 3:
-			dram_info->type = INTEL_DRAM_LPDDR4;
-			break;
-		case 4:
-			dram_info->type = INTEL_DRAM_DDR3;
-			break;
-		case 5:
-			dram_info->type = INTEL_DRAM_LPDDR3;
-			break;
-		default:
-			MISSING_CASE(val & 0xf);
-			return -1;
-		}
-	} else {
-		switch (val & 0xf) {
-		case 0:
-			dram_info->type = INTEL_DRAM_DDR4;
-			break;
-		case 1:
-			dram_info->type = INTEL_DRAM_DDR3;
-			break;
-		case 2:
-			dram_info->type = INTEL_DRAM_LPDDR3;
-			break;
-		case 3:
-			dram_info->type = INTEL_DRAM_LPDDR4;
-			break;
-		default:
-			MISSING_CASE(val & 0xf);
-			return -1;
-		}
-	}
-
-	dram_info->num_channels = (val & 0xf0) >> 4;
-	dram_info->num_qgv_points = (val & 0xf00) >> 8;
-
-	return 0;
-}
-
-static int gen11_get_dram_info(struct drm_i915_private *i915)
-{
-	int ret = skl_get_dram_info(i915);
-
-	if (ret)
-		return ret;
-
-	return icl_pcode_read_mem_global_info(i915);
-}
-
-static int gen12_get_dram_info(struct drm_i915_private *i915)
-{
-	/* Always needed for GEN12+ */
-	i915->dram_info.wm_lv_0_adjust_needed = true;
-
-	return icl_pcode_read_mem_global_info(i915);
-}
-
-void intel_dram_detect(struct drm_i915_private *i915)
-{
-	struct dram_info *dram_info = &i915->dram_info;
-	int ret;
-
-	/*
-	 * Assume level 0 watermark latency adjustment is needed until proven
-	 * otherwise, this w/a is not needed by bxt/glk.
-	 */
-	dram_info->wm_lv_0_adjust_needed = !IS_GEN9_LP(i915);
-
-	if (GRAPHICS_VER(i915) < 9 || !HAS_DISPLAY(i915))
-		return;
-
-	if (GRAPHICS_VER(i915) >= 12)
-		ret = gen12_get_dram_info(i915);
-	else if (GRAPHICS_VER(i915) >= 11)
-		ret = gen11_get_dram_info(i915);
-	else if (IS_GEN9_LP(i915))
-		ret = bxt_get_dram_info(i915);
-	else
-		ret = skl_get_dram_info(i915);
-	if (ret)
-		return;
-
-	drm_dbg_kms(&i915->drm, "DRAM channels: %u\n", dram_info->num_channels);
-
-	drm_dbg_kms(&i915->drm, "Watermark level 0 adjustment needed: %s\n",
-		    yesno(dram_info->wm_lv_0_adjust_needed));
-}
-
-static u32 gen9_edram_size_mb(struct drm_i915_private *i915, u32 cap)
-{
-	static const u8 ways[8] = { 4, 8, 12, 16, 16, 16, 16, 16 };
-	static const u8 sets[4] = { 1, 1, 2, 2 };
-
-	return EDRAM_NUM_BANKS(cap) *
-		ways[EDRAM_WAYS_IDX(cap)] *
-		sets[EDRAM_SETS_IDX(cap)];
-}
-
-void intel_dram_edram_detect(struct drm_i915_private *i915)
-{
-	u32 edram_cap = 0;
-
-	if (!(IS_HASWELL(i915) || IS_BROADWELL(i915) || GRAPHICS_VER(i915) >= 9))
-		return;
-
-	edram_cap = __raw_uncore_read32(&i915->uncore, HSW_EDRAM_CAP);
-
-	/* NB: We can't write IDICR yet because we don't have gt funcs set up */
-
-	if (!(edram_cap & EDRAM_ENABLED))
-		return;
-
-	/*
-	 * The needed capability bits for size calculation are not there with
-	 * pre gen9 so return 128MB always.
-	 */
-	if (GRAPHICS_VER(i915) < 9)
-		i915->edram_size_mb = 128;
-	else
-		i915->edram_size_mb = gen9_edram_size_mb(i915, edram_cap);
-
-	drm_info(&i915->drm, "Found %uMB of eDRAM\n", i915->edram_size_mb);
-}