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