1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* Copyright (c) 2018 Quantenna Communications, Inc. All rights reserved. */ 3 4 #ifndef _QTN_FMAC_PCIE_H_ 5 #define _QTN_FMAC_PCIE_H_ 6 7 #include <linux/pci.h> 8 #include <linux/spinlock.h> 9 #include <linux/io.h> 10 #include <linux/skbuff.h> 11 #include <linux/workqueue.h> 12 #include <linux/interrupt.h> 13 14 #include "shm_ipc.h" 15 #include "bus.h" 16 17 #define SKB_BUF_SIZE 2048 18 19 #define QTN_FW_DL_TIMEOUT_MS 3000 20 #define QTN_FW_QLINK_TIMEOUT_MS 30000 21 #define QTN_EP_RESET_WAIT_MS 1000 22 23 struct qtnf_pcie_bus_priv { 24 struct pci_dev *pdev; 25 26 int (*probe_cb)(struct qtnf_bus *bus, unsigned int tx_bd_size, 27 unsigned int rx_bd_size); 28 void (*remove_cb)(struct qtnf_bus *bus); 29 int (*suspend_cb)(struct qtnf_bus *bus); 30 int (*resume_cb)(struct qtnf_bus *bus); 31 u64 (*dma_mask_get_cb)(void); 32 33 spinlock_t tx_reclaim_lock; 34 spinlock_t tx_lock; 35 36 struct workqueue_struct *workqueue; 37 struct tasklet_struct reclaim_tq; 38 39 void __iomem *sysctl_bar; 40 void __iomem *epmem_bar; 41 void __iomem *dmareg_bar; 42 43 struct qtnf_shm_ipc shm_ipc_ep_in; 44 struct qtnf_shm_ipc shm_ipc_ep_out; 45 46 u16 tx_bd_num; 47 u16 rx_bd_num; 48 49 struct sk_buff **tx_skb; 50 struct sk_buff **rx_skb; 51 52 unsigned int fw_blksize; 53 54 u32 rx_bd_w_index; 55 u32 rx_bd_r_index; 56 57 u32 tx_bd_w_index; 58 u32 tx_bd_r_index; 59 60 /* diagnostics stats */ 61 u32 pcie_irq_count; 62 u32 tx_full_count; 63 u32 tx_done_count; 64 u32 tx_reclaim_done; 65 u32 tx_reclaim_req; 66 67 u8 msi_enabled; 68 u8 tx_stopped; 69 bool flashboot; 70 }; 71 72 int qtnf_pcie_control_tx(struct qtnf_bus *bus, struct sk_buff *skb); 73 int qtnf_pcie_alloc_skb_array(struct qtnf_pcie_bus_priv *priv); 74 int qtnf_pcie_fw_boot_done(struct qtnf_bus *bus); 75 void qtnf_pcie_init_shm_ipc(struct qtnf_pcie_bus_priv *priv, 76 struct qtnf_shm_ipc_region __iomem *ipc_tx_reg, 77 struct qtnf_shm_ipc_region __iomem *ipc_rx_reg, 78 const struct qtnf_shm_ipc_int *ipc_int); 79 struct qtnf_bus *qtnf_pcie_pearl_alloc(struct pci_dev *pdev); 80 struct qtnf_bus *qtnf_pcie_topaz_alloc(struct pci_dev *pdev); 81 82 static inline void qtnf_non_posted_write(u32 val, void __iomem *basereg) 83 { 84 writel(val, basereg); 85 86 /* flush posted write */ 87 readl(basereg); 88 } 89 90 #endif /* _QTN_FMAC_PCIE_H_ */ 91