xref: /linux/drivers/net/wireless/quantenna/qtnfmac/pcie/pcie_priv.h (revision c95baf12f5077419db01313ab61c2aac007d40cd)
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 
qtnf_non_posted_write(u32 val,void __iomem * basereg)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