disp: msm: sde: adds mem mapping for hwfence ipcc reg

This change adds one-to-one memory mapping for the hwfence
ipcc register memory needed for hw fence feature.

Change-Id: I0e264183e02d0ed5f2254b409cc5e776d670f0dc
Signed-off-by: Christina Oliveira <quic_coliveir@quicinc.com>

msm/sde/sde_hw_catalog.c

@@ -222,6 +222,7 @@ enum sde_prop {
 	TRUSTED_VM_ENV,
 	MAX_TRUSTED_VM_DISPLAYS,
 	TVM_INCLUDE_REG,
+	IPCC_PROTOCOL_ID,
 	SDE_PROP_MAX,
 };
 
@@ -620,6 +621,7 @@ static struct sde_prop_type sde_prop[] = {
 	{MAX_TRUSTED_VM_DISPLAYS, "qcom,sde-max-trusted-vm-displays", false,
 			PROP_TYPE_U32},
 	{TVM_INCLUDE_REG, "qcom,tvm-include-reg", false, PROP_TYPE_U32_ARRAY},
+	{IPCC_PROTOCOL_ID, "qcom,sde-ipcc-protocol-id", false, PROP_TYPE_U32},
 };
 
 static struct sde_prop_type sde_perf_prop[] = {
@@ -3992,6 +3994,8 @@ static void _sde_top_parse_dt_helper(struct sde_mdss_cfg *cfg,
 	cfg->mdp[0].smart_panel_align_mode =
 		PROP_VALUE_ACCESS(props->values, SMART_PANEL_ALIGN_MODE, 0);
 
+	cfg->ipcc_protocol_id = PROP_VALUE_ACCESS(props->values, IPCC_PROTOCOL_ID, 0);
+
 	if (props->exists[SEC_SID_MASK]) {
 		cfg->sec_sid_mask_count = props->counts[SEC_SID_MASK];
 		for (i = 0; i < cfg->sec_sid_mask_count; i++)

msm/sde/sde_hw_catalog.h

@@ -1847,6 +1847,7 @@ struct sde_perf_cfg {
  * @inline_rot_restricted_formats       restricted formats for inline rotation
  * @dnsc_blur_filters        supported filters for downscale blur
  * @dnsc_blur_filter_count   supported filter count for downscale blur
+ * @ipcc_protocol_id    ipcc protocol id for the hw
  */
 struct sde_mdss_cfg {
 	/* Block Revisions */
@@ -1964,6 +1965,8 @@ struct sde_mdss_cfg {
 	struct sde_format_extended *inline_rot_restricted_formats;
 	struct sde_dnsc_blur_filter_info *dnsc_blur_filters;
 	u32 dnsc_blur_filter_count;
+
+	u32 ipcc_protocol_id;
 };
 
 struct sde_mdss_hw_cfg_handler {

msm/sde/sde_hw_top.c

@@ -101,11 +101,9 @@
 #define MDP_CTL_HW_FENCE_IDm_DATA		0x14058
 #define MDP_CTL_HW_FENCE_IDm_MASK		0x1405c
 #define MDP_CTL_HW_FENCE_IDm_ATTR		0x14060
-#define HW_FENCE_IPCC_PROTOCOL_ID_COMPUTE_L1		0x2
+
 #define HW_FENCE_IPCC_PROTOCOLp_CLIENTc_SEND(ba, p, c) ((ba+0xc) + (0x40000*p) + (0x1000*c))
 #define HW_FENCE_IPCC_PROTOCOLp_CLIENTc_RECV_ID(ba, p, c) ((ba+0x10) + (0x40000*p) + (0x1000*c))
-#define HW_FENCE_IPCC_SEND_BA		0x40000c
-#define HW_FENCE_IPCC_RECV_ID_BA	0x400010
 #define MDP_CTL_HW_FENCE_ID_OFFSET_n(base, n) (base + (0x14*n))
 #define MDP_CTL_HW_FENCE_ID_OFFSET_m(base, m) (base + (0x14*m))
 #define MDP_CTL_FENCE_ATTRS(devicetype, size, resp_req) \
@@ -595,7 +593,8 @@ static u32 sde_hw_get_autorefresh_status(struct sde_hw_mdp *mdp, u32 intf_idx)
 	return autorefresh_status;
 }
 
-static void sde_hw_setup_hw_fences_config(struct sde_hw_mdp *mdp)
+static void sde_hw_setup_hw_fences_config(struct sde_hw_mdp *mdp, u32 protocol_id,
+	unsigned long ipcc_base_addr)
 {
 	u32 val, offset;
 	struct sde_hw_blk_reg_map c;
@@ -610,7 +609,7 @@ static void sde_hw_setup_hw_fences_config(struct sde_hw_mdp *mdp)
 	c.blk_off = 0x0;
 
 	/*select ipcc protocol id for dpu */
-	SDE_REG_WRITE(&c, MDP_CTL_HW_FENCE_CTRL, HW_FENCE_IPCC_PROTOCOL_ID_COMPUTE_L1);
+	SDE_REG_WRITE(&c, MDP_CTL_HW_FENCE_CTRL, protocol_id);
 
 	/* configure the start of the FENCE_IDn_ISR ops for input and output fence isr's */
 	val = (HW_FENCE_DPU_OUTPUT_FENCE_START_N << 16) | (HW_FENCE_DPU_INPUT_FENCE_START_N & 0xFF);
@@ -620,8 +619,8 @@ static void sde_hw_setup_hw_fences_config(struct sde_hw_mdp *mdp)
 
 	/* configure the attribs for the isr read_reg op */
 	offset = MDP_CTL_HW_FENCE_ID_OFFSET_m(MDP_CTL_HW_FENCE_IDm_ADDR, 0);
-	val = HW_FENCE_IPCC_PROTOCOLp_CLIENTc_RECV_ID(HW_FENCE_IPCC_RECV_ID_BA,
-				HW_FENCE_IPCC_PROTOCOL_ID_COMPUTE_L1, 25);
+	val = HW_FENCE_IPCC_PROTOCOLp_CLIENTc_RECV_ID(ipcc_base_addr,
+				protocol_id, HW_FENCE_IPCC_CLIENT_DPU);
 	SDE_REG_WRITE(&c, offset, val);
 
 	offset = MDP_CTL_HW_FENCE_ID_OFFSET_m(MDP_CTL_HW_FENCE_IDm_ATTR, 0);
@@ -659,8 +658,8 @@ static void sde_hw_setup_hw_fences_config(struct sde_hw_mdp *mdp)
 
 	/* configure the attribs for the isr load_data op */
 	offset = MDP_CTL_HW_FENCE_ID_OFFSET_m(MDP_CTL_HW_FENCE_IDm_ADDR, 4);
-	val =  HW_FENCE_IPCC_PROTOCOLp_CLIENTc_SEND(HW_FENCE_IPCC_SEND_BA,
-			HW_FENCE_IPCC_PROTOCOL_ID_COMPUTE_L1, 25);
+	val =  HW_FENCE_IPCC_PROTOCOLp_CLIENTc_SEND(ipcc_base_addr,
+			protocol_id, HW_FENCE_IPCC_CLIENT_DPU);
 	SDE_REG_WRITE(&c, offset, val);
 
 	offset = MDP_CTL_HW_FENCE_ID_OFFSET_m(MDP_CTL_HW_FENCE_IDm_ATTR, 4);

msm/sde/sde_hw_top.h

@@ -11,6 +11,9 @@
 #include "sde_hw_mdss.h"
 #include "sde_hw_util.h"
 
+#define HW_FENCE_IPCC_CLIENT_DPU   25
+#define HW_FENCE_IPCC_PROTOCOLp_CLIENTc(ba, p, c)   (ba + (0x40000*p) + (0x1000*c))
+
 struct sde_hw_mdp;
 struct sde_hw_sid;
 
@@ -206,8 +209,11 @@ struct sde_hw_mdp_ops {
 	/**
 	 * setup_hw_fences - configure hw fences top registers
 	 * @mdp:     mdp top context driver
+	 * @protocol_id:    ipcc protocol id
+	 * @ipcc_base_addr: base address for ipcc reg block
 	 */
-	void (*setup_hw_fences)(struct sde_hw_mdp *mdp);
+	void (*setup_hw_fences)(struct sde_hw_mdp *mdp, u32 protocol_id,
+			unsigned long ipcc_base_addr);
 
 };
 

msm/sde/sde_kms.c

@@ -783,6 +783,37 @@ static int _sde_kms_release_shared_buffer(unsigned int mem_addr,
 
 }
 
+static int _sde_kms_one2one_mem_map_ipcc_reg(struct sde_kms *sde_kms, u32 buf_size,
+		unsigned long buf_base)
+{
+	struct msm_mmu *mmu = NULL;
+	int ret = 0;
+
+	if (!sde_kms->aspace[MSM_SMMU_DOMAIN_UNSECURE]
+		|| !sde_kms->aspace[MSM_SMMU_DOMAIN_UNSECURE]->mmu) {
+		SDE_ERROR("aspace not found for sde kms node\n");
+		return -EINVAL;
+	}
+
+	mmu = sde_kms->aspace[MSM_SMMU_DOMAIN_UNSECURE]->mmu;
+	if (!mmu) {
+		SDE_ERROR("mmu not found for aspace\n");
+		return -EINVAL;
+	}
+
+	if (!mmu->funcs || !mmu->funcs->one_to_one_map) {
+		SDE_ERROR("invalid input params for map\n");
+		return -EINVAL;
+	}
+
+	ret = mmu->funcs->one_to_one_map(mmu, buf_base, buf_base, buf_size,
+		IOMMU_READ | IOMMU_WRITE);
+	if (ret)
+		SDE_ERROR("one2one memory smmu map failed:%d\n", ret);
+
+	return ret;
+}
+
 static int _sde_kms_splash_mem_get(struct sde_kms *sde_kms,
 		struct sde_splash_mem *splash)
 {
@@ -4169,6 +4200,8 @@ static int _sde_kms_mmu_destroy(struct sde_kms *sde_kms)
 static int _sde_kms_mmu_init(struct sde_kms *sde_kms)
 {
 	struct msm_mmu *mmu;
+	struct resource *res;
+	struct platform_device *pdev;
 	int i, ret;
 
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
@@ -4210,6 +4243,25 @@ static int _sde_kms_mmu_init(struct sde_kms *sde_kms)
 			}
 		}
 
+		if (i == MSM_SMMU_DOMAIN_UNSECURE && sde_kms->catalog->hw_fence_rev) {
+			pdev = to_platform_device(sde_kms->dev->dev);
+			res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ipcc_reg");
+			if (!res) {
+				SDE_DEBUG("failed to get resource ipcc_reg, cannot map ipcc\n");
+				sde_kms->catalog->hw_fence_rev = 0;
+			} else {
+				sde_kms->ipcc_base_addr = res->start;
+
+				ret = _sde_kms_one2one_mem_map_ipcc_reg(sde_kms, resource_size(res),
+					HW_FENCE_IPCC_PROTOCOLp_CLIENTc(res->start,
+					sde_kms->catalog->ipcc_protocol_id,
+					HW_FENCE_IPCC_CLIENT_DPU));
+				/* if mapping fails disable hw-fences */
+				if (ret)
+					sde_kms->catalog->hw_fence_rev = 0;
+			}
+		}
+
 		/*
 		 * disable early-map which would have been enabled during
 		 * bootup by smmu through the device-tree hint for cont-spash
@@ -4258,7 +4310,8 @@ static void sde_kms_init_hw_fences(struct sde_kms *sde_kms)
 		return;
 
 	if (sde_kms->hw_mdp->ops.setup_hw_fences)
-		sde_kms->hw_mdp->ops.setup_hw_fences(sde_kms->hw_mdp);
+		sde_kms->hw_mdp->ops.setup_hw_fences(sde_kms->hw_mdp,
+			sde_kms->catalog->ipcc_protocol_id, sde_kms->ipcc_base_addr);
 }
 
 static void sde_kms_init_shared_hw(struct sde_kms *sde_kms)

msm/sde/sde_kms.h

@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
  * Copyright (C) 2013 Red Hat
  * Author: Rob Clark <robdclark@gmail.com>
@@ -315,6 +316,8 @@ struct sde_kms {
 	struct irq_affinity_notify affinity_notify;
 
 	struct sde_vm *vm;
+
+	unsigned long ipcc_base_addr;
 };
 
 struct vsync_info {