qcacmn: Add static window support for UMAC and CE access in 6750

Use static window for accessing UMAC and CE register in qca6750. For
UMAC and CE register access, separate static window is mapped. Host
accesses these registers using relative offset to window address.

Change-Id: I7940336579553f05a11f1379f635689d08508c56
CRs-Fixed: 2617684

hal/wifi3.0/qca6750/hal_6750.c

@@ -1278,6 +1278,9 @@ uint16_t hal_rx_get_rx_sequence_6750(uint8_t *buf)
 	return HAL_RX_MPDU_GET_SEQUENCE_NUMBER(rx_mpdu_info);
 }
 
+#define UMAC_WINDOW_REMAP_RANGE 0x14
+#define CE_WINDOW_REMAP_RANGE 0x37
+
 /**
  * hal_get_window_address_6750(): Function to get hp/tp address
  * @hal_soc: Pointer to hal_soc
@@ -1288,7 +1291,33 @@ uint16_t hal_rx_get_rx_sequence_6750(uint8_t *buf)
 static inline qdf_iomem_t hal_get_window_address_6750(struct hal_soc *hal_soc,
 						      qdf_iomem_t addr)
 {
-	return addr;
+	qdf_iomem_t new_addr;
+	uint32_t offset;
+	uint32_t window;
+
+	offset = addr - hal_soc->dev_base_addr;
+	window = (offset >> WINDOW_SHIFT) & WINDOW_VALUE_MASK;
+
+	/*
+	 * If offset lies within UMAC register range, use 2nd window
+	 */
+	if (window == UMAC_WINDOW_REMAP_RANGE) {
+		new_addr = (hal_soc->dev_base_addr + WINDOW_START +
+			(offset & WINDOW_RANGE_MASK));
+	/*
+	 * If offset lies within CE register range, use 3rd window
+	 */
+	} else if (window == CE_WINDOW_REMAP_RANGE) {
+		new_addr = (hal_soc->dev_base_addr + (2 * WINDOW_START) +
+			(offset & WINDOW_RANGE_MASK));
+	} else {
+		QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
+			  "%s: ERROR: Accessing Wrong register\n", __func__);
+		qdf_assert_always(0);
+		return 0;
+	}
+
+	return new_addr;
 }
 
 struct hal_hw_txrx_ops qca6750_hal_hw_txrx_ops = {