wifi: ath11k: remap ce register space for IPQ5018

In IPQ5018 ce register space is moved out of wcss unlike
ipq8074 or ipq6018 and the space is not contiguous,
hence remap the CE registers to a new space to access them.

Register read/write is modified to check if the register to be written
falls in the CE register space and corresponding register is written.
Also adjust the interrupt register address to ce irq enable/disable.

Tested-on: IPQ5018 hw1.0 AHB WLAN.HK.2.6.0.1-00861-QCAHKSWPL_SILICONZ-1

Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Co-developed-by: Karthikeyan Kathirvel <quic_kathirve@quicinc.com>
Signed-off-by: Karthikeyan Kathirvel <quic_kathirve@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20221122132152.17771-5-quic_kathirve@quicinc.com

1 files changed, 38 insertions, 6 deletions

diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c
index d34a4d6325b2..cb9dd00d0195 100644
--- a/drivers/net/wireless/ath/ath11k/ahb.c
+++ b/drivers/net/wireless/ath/ath11k/ahb.c
@@ -267,30 +267,42 @@ static void ath11k_ahb_clearbit32(struct ath11k_base *ab, u8 bit, u32 offset)
 static void ath11k_ahb_ce_irq_enable(struct ath11k_base *ab, u16 ce_id)
 {
 	const struct ce_attr *ce_attr;
+	const struct ce_ie_addr *ce_ie_addr = ab->hw_params.ce_ie_addr;
+	u32 ie1_reg_addr, ie2_reg_addr, ie3_reg_addr;
+
+	ie1_reg_addr = ce_ie_addr->ie1_reg_addr + ATH11K_CE_OFFSET(ab);
+	ie2_reg_addr = ce_ie_addr->ie2_reg_addr + ATH11K_CE_OFFSET(ab);
+	ie3_reg_addr = ce_ie_addr->ie3_reg_addr + ATH11K_CE_OFFSET(ab);
 
 	ce_attr = &ab->hw_params.host_ce_config[ce_id];
 	if (ce_attr->src_nentries)
-		ath11k_ahb_setbit32(ab, ce_id, CE_HOST_IE_ADDRESS);
+		ath11k_ahb_setbit32(ab, ce_id, ie1_reg_addr);
 
 	if (ce_attr->dest_nentries) {
-		ath11k_ahb_setbit32(ab, ce_id, CE_HOST_IE_2_ADDRESS);
+		ath11k_ahb_setbit32(ab, ce_id, ie2_reg_addr);
 		ath11k_ahb_setbit32(ab, ce_id + CE_HOST_IE_3_SHIFT,
-				    CE_HOST_IE_3_ADDRESS);
+				    ie3_reg_addr);
 	}
 }
 
 static void ath11k_ahb_ce_irq_disable(struct ath11k_base *ab, u16 ce_id)
 {
 	const struct ce_attr *ce_attr;
+	const struct ce_ie_addr *ce_ie_addr = ab->hw_params.ce_ie_addr;
+	u32 ie1_reg_addr, ie2_reg_addr, ie3_reg_addr;
+
+	ie1_reg_addr = ce_ie_addr->ie1_reg_addr + ATH11K_CE_OFFSET(ab);
+	ie2_reg_addr = ce_ie_addr->ie2_reg_addr + ATH11K_CE_OFFSET(ab);
+	ie3_reg_addr = ce_ie_addr->ie3_reg_addr + ATH11K_CE_OFFSET(ab);
 
 	ce_attr = &ab->hw_params.host_ce_config[ce_id];
 	if (ce_attr->src_nentries)
-		ath11k_ahb_clearbit32(ab, ce_id, CE_HOST_IE_ADDRESS);
+		ath11k_ahb_clearbit32(ab, ce_id, ie1_reg_addr);
 
 	if (ce_attr->dest_nentries) {
-		ath11k_ahb_clearbit32(ab, ce_id, CE_HOST_IE_2_ADDRESS);
+		ath11k_ahb_clearbit32(ab, ce_id, ie2_reg_addr);
 		ath11k_ahb_clearbit32(ab, ce_id + CE_HOST_IE_3_SHIFT,
-				      CE_HOST_IE_3_ADDRESS);
+				      ie3_reg_addr);
 	}
 }
 
@@ -1142,10 +1154,26 @@ static int ath11k_ahb_probe(struct platform_device *pdev)
 		goto err_core_free;
 	}
 
+	ab->mem_ce = ab->mem;
+
 	ret = ath11k_core_pre_init(ab);
 	if (ret)
 		goto err_core_free;
 
+	if (ab->hw_params.ce_remap) {
+		const struct ce_remap *ce_remap = ab->hw_params.ce_remap;
+		/* ce register space is moved out of wcss unlike ipq8074 or ipq6018
+		 * and the space is not contiguous, hence remapping the CE registers
+		 * to a new space for accessing them.
+		 */
+		ab->mem_ce = ioremap(ce_remap->base, ce_remap->size);
+		if (IS_ERR(ab->mem_ce)) {
+			dev_err(&pdev->dev, "ce ioremap error\n");
+			ret = -ENOMEM;
+			goto err_core_free;
+		}
+	}
+
 	ret = ath11k_ahb_setup_resources(ab);
 	if (ret)
 		goto err_core_free;
@@ -1236,6 +1264,10 @@ static void ath11k_ahb_free_resources(struct ath11k_base *ab)
 	ath11k_ahb_release_smp2p_handle(ab);
 	ath11k_ahb_fw_resource_deinit(ab);
 	ath11k_ce_free_pipes(ab);
+
+	if (ab->hw_params.ce_remap)
+		iounmap(ab->mem_ce);
+
 	ath11k_core_free(ab);
 	platform_set_drvdata(pdev, NULL);
 }