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Diffstat (limited to 'drivers/net/wwan/t7xx/t7xx_port.h')
-rw-r--r--drivers/net/wwan/t7xx/t7xx_port.h135
1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/net/wwan/t7xx/t7xx_port.h b/drivers/net/wwan/t7xx/t7xx_port.h
new file mode 100644
index 000000000..dc4133eb4
--- /dev/null
+++ b/drivers/net/wwan/t7xx/t7xx_port.h
@@ -0,0 +1,135 @@
+/* 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>
+ * Moises Veleta <moises.veleta@intel.com>
+ * Ricardo Martinez <ricardo.martinez@linux.intel.com>
+ *
+ * Contributors:
+ * Amir Hanania <amir.hanania@intel.com>
+ * Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+ * Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
+ * Eliot Lee <eliot.lee@intel.com>
+ */
+
+#ifndef __T7XX_PORT_H__
+#define __T7XX_PORT_H__
+
+#include <linux/bits.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/wwan.h>
+
+#include "t7xx_hif_cldma.h"
+#include "t7xx_pci.h"
+
+#define PORT_CH_ID_MASK GENMASK(7, 0)
+
+/* Channel ID and Message ID definitions.
+ * The channel number consists of peer_id(15:12) , channel_id(11:0)
+ * peer_id:
+ * 0:reserved, 1: to sAP, 2: to MD
+ */
+enum port_ch {
+ /* to MD */
+ PORT_CH_CONTROL_RX = 0x2000,
+ PORT_CH_CONTROL_TX = 0x2001,
+ PORT_CH_UART1_RX = 0x2006, /* META */
+ PORT_CH_UART1_TX = 0x2008,
+ PORT_CH_UART2_RX = 0x200a, /* AT */
+ PORT_CH_UART2_TX = 0x200c,
+ PORT_CH_MD_LOG_RX = 0x202a, /* MD logging */
+ PORT_CH_MD_LOG_TX = 0x202b,
+ PORT_CH_LB_IT_RX = 0x203e, /* Loop back test */
+ PORT_CH_LB_IT_TX = 0x203f,
+ PORT_CH_STATUS_RX = 0x2043, /* Status events */
+ PORT_CH_MIPC_RX = 0x20ce, /* MIPC */
+ PORT_CH_MIPC_TX = 0x20cf,
+ PORT_CH_MBIM_RX = 0x20d0,
+ PORT_CH_MBIM_TX = 0x20d1,
+ PORT_CH_DSS0_RX = 0x20d2,
+ PORT_CH_DSS0_TX = 0x20d3,
+ PORT_CH_DSS1_RX = 0x20d4,
+ PORT_CH_DSS1_TX = 0x20d5,
+ PORT_CH_DSS2_RX = 0x20d6,
+ PORT_CH_DSS2_TX = 0x20d7,
+ PORT_CH_DSS3_RX = 0x20d8,
+ PORT_CH_DSS3_TX = 0x20d9,
+ PORT_CH_DSS4_RX = 0x20da,
+ PORT_CH_DSS4_TX = 0x20db,
+ PORT_CH_DSS5_RX = 0x20dc,
+ PORT_CH_DSS5_TX = 0x20dd,
+ PORT_CH_DSS6_RX = 0x20de,
+ PORT_CH_DSS6_TX = 0x20df,
+ PORT_CH_DSS7_RX = 0x20e0,
+ PORT_CH_DSS7_TX = 0x20e1,
+};
+
+struct t7xx_port;
+struct port_ops {
+ int (*init)(struct t7xx_port *port);
+ int (*recv_skb)(struct t7xx_port *port, struct sk_buff *skb);
+ void (*md_state_notify)(struct t7xx_port *port, unsigned int md_state);
+ void (*uninit)(struct t7xx_port *port);
+ int (*enable_chl)(struct t7xx_port *port);
+ int (*disable_chl)(struct t7xx_port *port);
+};
+
+struct t7xx_port_conf {
+ enum port_ch tx_ch;
+ enum port_ch rx_ch;
+ unsigned char txq_index;
+ unsigned char rxq_index;
+ unsigned char txq_exp_index;
+ unsigned char rxq_exp_index;
+ enum cldma_id path_id;
+ struct port_ops *ops;
+ char *name;
+ enum wwan_port_type port_type;
+};
+
+struct t7xx_port {
+ /* Members not initialized in definition */
+ const struct t7xx_port_conf *port_conf;
+ struct wwan_port *wwan_port;
+ struct t7xx_pci_dev *t7xx_dev;
+ struct device *dev;
+ u16 seq_nums[2]; /* TX/RX sequence numbers */
+ atomic_t usage_cnt;
+ struct list_head entry;
+ struct list_head queue_entry;
+ /* TX and RX flows are asymmetric since ports are multiplexed on
+ * queues.
+ *
+ * TX: data blocks are sent directly to a queue. Each port
+ * does not maintain a TX list; instead, they only provide
+ * a wait_queue_head for blocking writes.
+ *
+ * RX: Each port uses a RX list to hold packets,
+ * allowing the modem to dispatch RX packet as quickly as possible.
+ */
+ struct sk_buff_head rx_skb_list;
+ spinlock_t port_update_lock; /* Protects port configuration */
+ wait_queue_head_t rx_wq;
+ int rx_length_th;
+ bool chan_enable;
+ struct task_struct *thread;
+};
+
+struct sk_buff *t7xx_port_alloc_skb(int payload);
+struct sk_buff *t7xx_ctrl_alloc_skb(int payload);
+int t7xx_port_enqueue_skb(struct t7xx_port *port, struct sk_buff *skb);
+int t7xx_port_send_skb(struct t7xx_port *port, struct sk_buff *skb, unsigned int pkt_header,
+ unsigned int ex_msg);
+int t7xx_port_send_ctl_skb(struct t7xx_port *port, struct sk_buff *skb, unsigned int msg,
+ unsigned int ex_msg);
+
+#endif /* __T7XX_PORT_H__ */