diff options
Diffstat (limited to 'drivers/net/wwan/t7xx/t7xx_port.h')
| -rw-r--r-- | drivers/net/wwan/t7xx/t7xx_port.h | 132 |
1 files changed, 132 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 000000000000..0f3ffba5f9c2 --- /dev/null +++ b/drivers/net/wwan/t7xx/t7xx_port.h @@ -0,0 +1,132 @@ +/* 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); +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); + +#endif /* __T7XX_PORT_H__ */ |