6 files changed, 27 insertions, 4 deletions
diff --git a/drivers/net/wwan/Kconfig b/drivers/net/wwan/Kconfig
index 3486ffe94ac4..ac4d73b5626f 100644
--- a/drivers/net/wwan/Kconfig
+++ b/drivers/net/wwan/Kconfig
@@ -94,7 +94,7 @@ config RPMSG_WWAN_CTRL
 
 config IOSM
 	tristate "IOSM Driver for Intel M.2 WWAN Device"
-	depends on INTEL_IOMMU
+	depends on PCI
 	select NET_DEVLINK
 	select RELAY if WWAN_DEBUGFS
 	help
diff --git a/drivers/net/wwan/iosm/iosm_ipc_coredump.c b/drivers/net/wwan/iosm/iosm_ipc_coredump.c
index 9acd87724c9d..26ca30476f40 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_coredump.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_coredump.c
@@ -2,6 +2,7 @@
 /*
  * Copyright (C) 2020-2021 Intel Corporation.
  */
+#include <linux/vmalloc.h>
 
 #include "iosm_ipc_coredump.h"
 
diff --git a/drivers/net/wwan/iosm/iosm_ipc_devlink.c b/drivers/net/wwan/iosm/iosm_ipc_devlink.c
index 17da85a8f337..2fe724d623c0 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_devlink.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_devlink.c
@@ -2,6 +2,7 @@
 /*
  * Copyright (C) 2020-2021 Intel Corporation.
  */
+#include <linux/vmalloc.h>
 
 #include "iosm_ipc_chnl_cfg.h"
 #include "iosm_ipc_coredump.h"
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem_ops.c b/drivers/net/wwan/iosm/iosm_ipc_imem_ops.c
index b7f9237dedf7..66b90cc4c346 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem_ops.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem_ops.c
@@ -91,6 +91,14 @@ void ipc_imem_wwan_channel_init(struct iosm_imem *ipc_imem,
 	}
 
 	ipc_chnl_cfg_get(&chnl_cfg, ipc_imem->nr_of_channels);
+
+	if (ipc_imem->mmio->mux_protocol == MUX_AGGREGATION &&
+	    ipc_imem->nr_of_channels == IPC_MEM_IP_CHL_ID_0) {
+		chnl_cfg.ul_nr_of_entries = IPC_MEM_MAX_TDS_MUX_AGGR_UL;
+		chnl_cfg.dl_nr_of_entries = IPC_MEM_MAX_TDS_MUX_AGGR_DL;
+		chnl_cfg.dl_buf_size = IPC_MEM_MAX_ADB_BUF_SIZE;
+	}
+
 	ipc_imem_channel_init(ipc_imem, IPC_CTYPE_WWAN, chnl_cfg,
 			      IRQ_MOD_OFF);
 
diff --git a/drivers/net/wwan/iosm/iosm_ipc_mux.h b/drivers/net/wwan/iosm/iosm_ipc_mux.h
index cd9d74cc097f..9968bb885c1f 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_mux.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_mux.h
@@ -10,6 +10,7 @@
 
 #define IPC_MEM_MAX_UL_DG_ENTRIES	100
 #define IPC_MEM_MAX_TDS_MUX_AGGR_UL	60
+#define IPC_MEM_MAX_TDS_MUX_AGGR_DL	60
 
 #define IPC_MEM_MAX_ADB_BUF_SIZE (16 * 1024)
 #define IPC_MEM_MAX_UL_ADB_BUF_SIZE IPC_MEM_MAX_ADB_BUF_SIZE
diff --git a/drivers/net/wwan/iosm/iosm_ipc_pcie.c b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
index 31f57b986df2..d3d34d1c4704 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_pcie.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
@@ -232,6 +232,7 @@ static void ipc_pcie_config_init(struct iosm_pcie *ipc_pcie)
  */
 static enum ipc_pcie_sleep_state ipc_pcie_read_bios_cfg(struct device *dev)
 {
+	enum ipc_pcie_sleep_state sleep_state = IPC_PCIE_D0L12;
 	union acpi_object *object;
 	acpi_handle handle_acpi;
 
@@ -242,18 +243,23 @@ static enum ipc_pcie_sleep_state ipc_pcie_read_bios_cfg(struct device *dev)
 	}
 
 	object = acpi_evaluate_dsm(handle_acpi, &wwan_acpi_guid, 0, 3, NULL);
+	if (!object)
+		goto default_ret;
+
+	if (object->integer.value == 3)
+		sleep_state = IPC_PCIE_D3L2;
 
-	if (object && object->integer.value == 3)
-		return IPC_PCIE_D3L2;
+	kfree(object);
 
 default_ret:
-	return IPC_PCIE_D0L12;
+	return sleep_state;
 }
 
 static int ipc_pcie_probe(struct pci_dev *pci,
 			  const struct pci_device_id *pci_id)
 {
 	struct iosm_pcie *ipc_pcie = kzalloc(sizeof(*ipc_pcie), GFP_KERNEL);
+	int ret;
 
 	pr_debug("Probing device 0x%X from the vendor 0x%X", pci_id->device,
 		 pci_id->vendor);
@@ -286,6 +292,12 @@ static int ipc_pcie_probe(struct pci_dev *pci,
 		goto pci_enable_fail;
 	}
 
+	ret = dma_set_mask(ipc_pcie->dev, DMA_BIT_MASK(64));
+	if (ret) {
+		dev_err(ipc_pcie->dev, "Could not set PCI DMA mask: %d", ret);
+		return ret;
+	}
+
 	ipc_pcie_config_aspm(ipc_pcie);
 	dev_dbg(ipc_pcie->dev, "PCIe device enabled.");