cnss2: Add support to get LPASS-FW shared memory info

Add support for host driver to get LPASS-FW shared
memory information in the context of direct link
use case.

CRs-Fixed: 3667595
Change-Id: I8254919814d578c9f28084db52a22f8cb9779112

cnss2/main.c

@@ -760,6 +760,28 @@ void cnss_audio_smmu_unmap(struct device *dev, dma_addr_t iova, size_t size)
 }
 EXPORT_SYMBOL(cnss_audio_smmu_unmap);
 
+int cnss_get_fw_lpass_shared_mem(struct device *dev, dma_addr_t *iova,
+				 size_t *size)
+{
+	struct cnss_plat_data *plat_priv = cnss_bus_dev_to_plat_priv(dev);
+	uint8_t i;
+
+	if (!plat_priv)
+		return -EINVAL;
+
+	for (i = 0; i < plat_priv->fw_mem_seg_len; i++) {
+		if (plat_priv->fw_mem[i].type ==
+		    QMI_WLFW_MEM_LPASS_SHARED_V01) {
+			*iova = plat_priv->fw_mem[i].pa;
+			*size = plat_priv->fw_mem[i].size;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL(cnss_get_fw_lpass_shared_mem);
+
 int cnss_athdiag_read(struct device *dev, u32 offset, u32 mem_type,
 		      u32 data_len, u8 *output)
 {
@@ -2556,6 +2578,9 @@ static void *cnss_get_fw_mem_pa_to_va(struct cnss_fw_mem *fw_mem,
 	u32 local_size;
 
 	for (i = 0; i < mem_seg_len; i++) {
+		if (i == QMI_WLFW_MEM_LPASS_SHARED_V01)
+			continue;
+
 		local_pa = (u64)fw_mem[i].pa;
 		local_size = (u32)fw_mem[i].size;
 		if (pa == local_pa && size <= local_size) {

inc/cnss2.h

@@ -440,6 +440,8 @@ extern int cnss_audio_smmu_map(struct device *dev, phys_addr_t paddr,
 			       dma_addr_t iova, size_t size);
 extern void cnss_audio_smmu_unmap(struct device *dev, dma_addr_t iova,
 				 size_t size);
+extern int cnss_get_fw_lpass_shared_mem(struct device *dev, dma_addr_t *iova,
+					size_t *size);
 extern int cnss_get_pci_slot(struct device *dev);
 extern int cnss_pci_get_reg_dump(struct device *dev, uint8_t *buffer,
 				 uint32_t len);