net: wwan: t7xx: Add core components

Registers the t7xx device driver with the kernel. Setup all the core
components: PCIe layer, Modem Host Cross Core Interface (MHCCIF),
modem control operations, modem state machine, and build
infrastructure.

* PCIe layer code implements driver probe and removal.
* MHCCIF provides interrupt channels to communicate events
  such as handshake, PM and port enumeration.
* Modem control implements the entry point for modem init,
  reset and exit.
* The modem status monitor is a state machine used by modem control
  to complete initialization and stop. It is used also to propagate
  exception events reported by other components.

Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/net/wwan/t7xx/t7xx_mhccif.h b/drivers/net/wwan/t7xx/t7xx_mhccif.h
new file mode 100644
index 000000000000..209b386bc088
--- /dev/null
+++ b/drivers/net/wwan/t7xx/t7xx_mhccif.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (c) 2021, MediaTek Inc.
+ * Copyright (c) 2021-2022, Intel Corporation.
+ *
+ * Authors:
+ *  Haijun Liu <haijun.liu@mediatek.com>
+ *  Sreehari Kancharla <sreehari.kancharla@intel.com>
+ *
+ * Contributors:
+ *  Amir Hanania <amir.hanania@intel.com>
+ *  Ricardo Martinez <ricardo.martinez@linux.intel.com>
+ */
+
+#ifndef __T7XX_MHCCIF_H__
+#define __T7XX_MHCCIF_H__
+
+#include <linux/types.h>
+
+#include "t7xx_pci.h"
+#include "t7xx_reg.h"
+
+#define D2H_SW_INT_MASK (D2H_INT_EXCEPTION_INIT |		\
+			 D2H_INT_EXCEPTION_INIT_DONE |		\
+			 D2H_INT_EXCEPTION_CLEARQ_DONE |	\
+			 D2H_INT_EXCEPTION_ALLQ_RESET |		\
+			 D2H_INT_PORT_ENUM |			\
+			 D2H_INT_ASYNC_MD_HK)
+
+void t7xx_mhccif_mask_set(struct t7xx_pci_dev *t7xx_dev, u32 val);
+void t7xx_mhccif_mask_clr(struct t7xx_pci_dev *t7xx_dev, u32 val);
+u32 t7xx_mhccif_mask_get(struct t7xx_pci_dev *t7xx_dev);
+void t7xx_mhccif_init(struct t7xx_pci_dev *t7xx_dev);
+u32 t7xx_mhccif_read_sw_int_sts(struct t7xx_pci_dev *t7xx_dev);
+void t7xx_mhccif_h2d_swint_trigger(struct t7xx_pci_dev *t7xx_dev, u32 channel);
+
+#endif /*__T7XX_MHCCIF_H__ */