diff options
Diffstat (limited to 'drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h')
| -rw-r--r-- | drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h new file mode 100644 index 000000000000..1225ca0ed51e --- /dev/null +++ b/drivers/net/wwan/t7xx/t7xx_hif_dpmaif.h @@ -0,0 +1,206 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright (c) 2021, MediaTek Inc. + * Copyright (c) 2021-2022, Intel Corporation. + * + * Authors: + * Amir Hanania <amir.hanania@intel.com> + * Haijun Liu <haijun.liu@mediatek.com> + * Moises Veleta <moises.veleta@intel.com> + * Ricardo Martinez <ricardo.martinez@linux.intel.com> + * + * Contributors: + * Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com> + * Eliot Lee <eliot.lee@intel.com> + * Sreehari Kancharla <sreehari.kancharla@intel.com> + */ + +#ifndef __T7XX_HIF_DPMAIF_H__ +#define __T7XX_HIF_DPMAIF_H__ + +#include <linux/bitmap.h> +#include <linux/mm_types.h> +#include <linux/sched.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/types.h> +#include <linux/wait.h> +#include <linux/workqueue.h> + +#include "t7xx_dpmaif.h" +#include "t7xx_pci.h" +#include "t7xx_state_monitor.h" + +/* SKB control buffer */ +struct t7xx_skb_cb { + u8 netif_idx; + u8 txq_number; + u8 rx_pkt_type; +}; + +#define T7XX_SKB_CB(__skb) ((struct t7xx_skb_cb *)(__skb)->cb) + +enum dpmaif_rdwr { + DPMAIF_READ, + DPMAIF_WRITE, +}; + +/* Structure of DL BAT */ +struct dpmaif_cur_rx_skb_info { + bool msg_pit_received; + struct sk_buff *cur_skb; + unsigned int cur_chn_idx; + unsigned int check_sum; + unsigned int pit_dp; + unsigned int pkt_type; + int err_payload; +}; + +struct dpmaif_bat { + unsigned int p_buffer_addr; + unsigned int buffer_addr_ext; +}; + +struct dpmaif_bat_skb { + struct sk_buff *skb; + dma_addr_t data_bus_addr; + unsigned int data_len; +}; + +struct dpmaif_bat_page { + struct page *page; + dma_addr_t data_bus_addr; + unsigned int offset; + unsigned int data_len; +}; + +enum bat_type { + BAT_TYPE_NORMAL, + BAT_TYPE_FRAG, +}; + +struct dpmaif_bat_request { + void *bat_base; + dma_addr_t bat_bus_addr; + unsigned int bat_size_cnt; + unsigned int bat_wr_idx; + unsigned int bat_release_rd_idx; + void *bat_skb; + unsigned int pkt_buf_sz; + unsigned long *bat_bitmap; + atomic_t refcnt; + spinlock_t mask_lock; /* Protects BAT mask */ + enum bat_type type; +}; + +struct dpmaif_rx_queue { + unsigned int index; + bool que_started; + unsigned int budget; + + void *pit_base; + dma_addr_t pit_bus_addr; + unsigned int pit_size_cnt; + + unsigned int pit_rd_idx; + unsigned int pit_wr_idx; + unsigned int pit_release_rd_idx; + + struct dpmaif_bat_request *bat_req; + struct dpmaif_bat_request *bat_frag; + + wait_queue_head_t rx_wq; + struct task_struct *rx_thread; + struct sk_buff_head skb_list; + unsigned int skb_list_max_len; + + struct workqueue_struct *worker; + struct work_struct dpmaif_rxq_work; + + atomic_t rx_processing; + + struct dpmaif_ctrl *dpmaif_ctrl; + unsigned int expect_pit_seq; + unsigned int pit_remain_release_cnt; + struct dpmaif_cur_rx_skb_info rx_data_info; +}; + +struct dpmaif_tx_queue { + unsigned int index; + bool que_started; + atomic_t tx_budget; + void *drb_base; + dma_addr_t drb_bus_addr; + unsigned int drb_size_cnt; + unsigned int drb_wr_idx; + unsigned int drb_rd_idx; + unsigned int drb_release_rd_idx; + void *drb_skb_base; + wait_queue_head_t req_wq; + struct workqueue_struct *worker; + struct work_struct dpmaif_tx_work; + spinlock_t tx_lock; /* Protects txq DRB */ + atomic_t tx_processing; + + struct dpmaif_ctrl *dpmaif_ctrl; + struct sk_buff_head tx_skb_head; +}; + +struct dpmaif_isr_para { + struct dpmaif_ctrl *dpmaif_ctrl; + unsigned char pcie_int; + unsigned char dlq_id; +}; + +enum dpmaif_state { + DPMAIF_STATE_MIN, + DPMAIF_STATE_PWROFF, + DPMAIF_STATE_PWRON, + DPMAIF_STATE_EXCEPTION, + DPMAIF_STATE_MAX +}; + +enum dpmaif_txq_state { + DMPAIF_TXQ_STATE_IRQ, + DMPAIF_TXQ_STATE_FULL, +}; + +struct dpmaif_callbacks { + void (*state_notify)(struct t7xx_pci_dev *t7xx_dev, + enum dpmaif_txq_state state, int txq_number); + void (*recv_skb)(struct t7xx_pci_dev *t7xx_dev, struct sk_buff *skb); +}; + +struct dpmaif_ctrl { + struct device *dev; + struct t7xx_pci_dev *t7xx_dev; + struct md_pm_entity dpmaif_pm_entity; + enum dpmaif_state state; + bool dpmaif_sw_init_done; + struct dpmaif_hw_info hw_info; + struct dpmaif_tx_queue txq[DPMAIF_TXQ_NUM]; + struct dpmaif_rx_queue rxq[DPMAIF_RXQ_NUM]; + + unsigned char rxq_int_mapping[DPMAIF_RXQ_NUM]; + struct dpmaif_isr_para isr_para[DPMAIF_RXQ_NUM]; + + struct dpmaif_bat_request bat_req; + struct dpmaif_bat_request bat_frag; + struct workqueue_struct *bat_release_wq; + struct work_struct bat_release_work; + + wait_queue_head_t tx_wq; + struct task_struct *tx_thread; + + struct dpmaif_callbacks *callbacks; +}; + +struct dpmaif_ctrl *t7xx_dpmaif_hif_init(struct t7xx_pci_dev *t7xx_dev, + struct dpmaif_callbacks *callbacks); +void t7xx_dpmaif_hif_exit(struct dpmaif_ctrl *dpmaif_ctrl); +int t7xx_dpmaif_md_state_callback(struct dpmaif_ctrl *dpmaif_ctrl, enum md_state state); +unsigned int t7xx_ring_buf_get_next_wr_idx(unsigned int buf_len, unsigned int buf_idx); +unsigned int t7xx_ring_buf_rd_wr_count(unsigned int total_cnt, unsigned int rd_idx, + unsigned int wr_idx, enum dpmaif_rdwr); + +#endif /* __T7XX_HIF_DPMAIF_H__ */ |