cnss2: Add code to fallback to non-contiguous FW mem allocation

Add code to fallback to non-contiguous FW mem allocation on
failure to allocate contiguous memory.

Change-Id: Idbc7ff7f9ea4d2157e3b549dde8ee090a0f0b412
CRs-Fixed: 3072737

cnss2/pci.c

@@ -3934,15 +3934,25 @@ int cnss_pci_alloc_fw_mem(struct cnss_pci_data *pci_priv)
 
 	for (i = 0; i < plat_priv->fw_mem_seg_len; i++) {
 		if (!fw_mem[i].va && fw_mem[i].size) {
+retry:
 			fw_mem[i].va =
 				dma_alloc_attrs(dev, fw_mem[i].size,
 						&fw_mem[i].pa, GFP_KERNEL,
 						fw_mem[i].attrs);
 
 			if (!fw_mem[i].va) {
+				if ((fw_mem[i].attrs &
+				    DMA_ATTR_FORCE_CONTIGUOUS)) {
+					fw_mem[i].attrs &=
+						~DMA_ATTR_FORCE_CONTIGUOUS;
+
+					cnss_pr_dbg("Fallback to non-contiguous memory for FW, Mem type: %u\n",
+						    fw_mem[i].type);
+					goto retry;
+				}
 				cnss_pr_err("Failed to allocate memory for FW, size: 0x%zx, type: %u\n",
 					    fw_mem[i].size, fw_mem[i].type);
-
+				CNSS_ASSERT(0);
 				return -ENOMEM;
 			}
 		}
@@ -4982,17 +4992,21 @@ void cnss_pci_collect_dump_info(struct cnss_pci_data *pci_priv, bool in_panic)
 
 	dump_data->nentries += rddm_image->entries;
 
-	cnss_pr_dbg("Collect remote heap dump segment\n");
-
 	for (i = 0, j = 0; i < plat_priv->fw_mem_seg_len; i++) {
 		if (fw_mem[i].type == CNSS_MEM_TYPE_DDR) {
-			cnss_pci_add_dump_seg(pci_priv, dump_seg,
-					      CNSS_FW_REMOTE_HEAP, j,
-					      fw_mem[i].va, fw_mem[i].pa,
-					      fw_mem[i].size);
-			dump_seg++;
-			dump_data->nentries++;
-			j++;
+			if (fw_mem[i].attrs & DMA_ATTR_FORCE_CONTIGUOUS) {
+				cnss_pr_dbg("Collect remote heap dump segment\n");
+				cnss_pci_add_dump_seg(pci_priv, dump_seg,
+						      CNSS_FW_REMOTE_HEAP, j,
+						      fw_mem[i].va,
+						      fw_mem[i].pa,
+						      fw_mem[i].size);
+				dump_seg++;
+				dump_data->nentries++;
+				j++;
+			} else {
+				cnss_pr_dbg("Skip remote heap dumps as it is non-contiguous\n");
+			}
 		}
 	}
 
@@ -5037,7 +5051,8 @@ void cnss_pci_clear_dump_info(struct cnss_pci_data *pci_priv)
 	}
 
 	for (i = 0, j = 0; i < plat_priv->fw_mem_seg_len; i++) {
-		if (fw_mem[i].type == CNSS_MEM_TYPE_DDR) {
+		if (fw_mem[i].type == CNSS_MEM_TYPE_DDR &&
+		    (fw_mem[i].attrs & DMA_ATTR_FORCE_CONTIGUOUS)) {
 			cnss_pci_remove_dump_seg(pci_priv, dump_seg,
 						 CNSS_FW_REMOTE_HEAP, j,
 						 fw_mem[i].va, fw_mem[i].pa,

cnss2/qmi.c

@@ -2409,7 +2409,8 @@ static void cnss_wlfw_request_mem_ind_cb(struct qmi_handle *qmi_wlfw,
 			    ind_msg->mem_seg[i].size, ind_msg->mem_seg[i].type);
 		plat_priv->fw_mem[i].type = ind_msg->mem_seg[i].type;
 		plat_priv->fw_mem[i].size = ind_msg->mem_seg[i].size;
-		if (plat_priv->fw_mem[i].type == CNSS_MEM_TYPE_DDR)
+		if (!plat_priv->fw_mem[i].va &&
+		    plat_priv->fw_mem[i].type == CNSS_MEM_TYPE_DDR)
 			plat_priv->fw_mem[i].attrs |=
 				DMA_ATTR_FORCE_CONTIGUOUS;
 		if (plat_priv->fw_mem[i].type == CNSS_MEM_CAL_V01)