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14#ifndef KVASER_USB_H
15#define KVASER_USB_H
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24#include <linux/completion.h>
25#include <linux/spinlock.h>
26#include <linux/types.h>
27#include <linux/usb.h>
28
29#include <linux/can.h>
30#include <linux/can/dev.h>
31
32#define KVASER_USB_MAX_RX_URBS 4
33#define KVASER_USB_MAX_TX_URBS 128
34#define KVASER_USB_TIMEOUT 1000
35#define KVASER_USB_RX_BUFFER_SIZE 3072
36#define KVASER_USB_MAX_NET_DEVICES 5
37
38
39#define KVASER_USB_HAS_SILENT_MODE BIT(0)
40#define KVASER_USB_HAS_TXRX_ERRORS BIT(1)
41
42
43#define KVASER_USB_CAP_BERR_CAP 0x01
44#define KVASER_USB_CAP_EXT_CAP 0x02
45#define KVASER_USB_HYDRA_CAP_EXT_CMD 0x04
46
47struct kvaser_usb_dev_cfg;
48
49enum kvaser_usb_leaf_family {
50 KVASER_LEAF,
51 KVASER_USBCAN,
52};
53
54#define KVASER_USB_HYDRA_MAX_CMD_LEN 128
55struct kvaser_usb_dev_card_data_hydra {
56 u8 channel_to_he[KVASER_USB_MAX_NET_DEVICES];
57 u8 sysdbg_he;
58 spinlock_t transid_lock;
59 u16 transid;
60
61 spinlock_t usb_rx_leftover_lock;
62 u8 usb_rx_leftover[KVASER_USB_HYDRA_MAX_CMD_LEN];
63 u8 usb_rx_leftover_len;
64};
65struct kvaser_usb_dev_card_data {
66 u32 ctrlmode_supported;
67 u32 capabilities;
68 union {
69 struct {
70 enum kvaser_usb_leaf_family family;
71 } leaf;
72 struct kvaser_usb_dev_card_data_hydra hydra;
73 };
74};
75
76
77struct kvaser_usb_tx_urb_context {
78 struct kvaser_usb_net_priv *priv;
79 u32 echo_index;
80};
81
82struct kvaser_usb {
83 struct usb_device *udev;
84 struct usb_interface *intf;
85 struct kvaser_usb_net_priv *nets[KVASER_USB_MAX_NET_DEVICES];
86 const struct kvaser_usb_dev_ops *ops;
87 const struct kvaser_usb_dev_cfg *cfg;
88
89 struct usb_endpoint_descriptor *bulk_in, *bulk_out;
90 struct usb_anchor rx_submitted;
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96 u32 fw_version;
97 unsigned int nchannels;
98 unsigned int max_tx_urbs;
99 struct kvaser_usb_dev_card_data card_data;
100
101 bool rxinitdone;
102 void *rxbuf[KVASER_USB_MAX_RX_URBS];
103 dma_addr_t rxbuf_dma[KVASER_USB_MAX_RX_URBS];
104};
105
106struct kvaser_usb_net_priv {
107 struct can_priv can;
108 struct can_berr_counter bec;
109
110 struct kvaser_usb *dev;
111 struct net_device *netdev;
112 int channel;
113
114 struct completion start_comp, stop_comp, flush_comp;
115 struct usb_anchor tx_submitted;
116
117 spinlock_t tx_contexts_lock;
118 int active_tx_contexts;
119 struct kvaser_usb_tx_urb_context tx_contexts[];
120};
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144struct kvaser_usb_dev_ops {
145 int (*dev_set_mode)(struct net_device *netdev, enum can_mode mode);
146 int (*dev_set_bittiming)(struct net_device *netdev);
147 int (*dev_set_data_bittiming)(struct net_device *netdev);
148 int (*dev_get_berr_counter)(const struct net_device *netdev,
149 struct can_berr_counter *bec);
150 int (*dev_setup_endpoints)(struct kvaser_usb *dev);
151 int (*dev_init_card)(struct kvaser_usb *dev);
152 int (*dev_get_software_info)(struct kvaser_usb *dev);
153 int (*dev_get_software_details)(struct kvaser_usb *dev);
154 int (*dev_get_card_info)(struct kvaser_usb *dev);
155 int (*dev_get_capabilities)(struct kvaser_usb *dev);
156 int (*dev_set_opt_mode)(const struct kvaser_usb_net_priv *priv);
157 int (*dev_start_chip)(struct kvaser_usb_net_priv *priv);
158 int (*dev_stop_chip)(struct kvaser_usb_net_priv *priv);
159 int (*dev_reset_chip)(struct kvaser_usb *dev, int channel);
160 int (*dev_flush_queue)(struct kvaser_usb_net_priv *priv);
161 void (*dev_read_bulk_callback)(struct kvaser_usb *dev, void *buf,
162 int len);
163 void *(*dev_frame_to_cmd)(const struct kvaser_usb_net_priv *priv,
164 const struct sk_buff *skb, int *cmd_len,
165 u16 transid);
166};
167
168struct kvaser_usb_dev_cfg {
169 const struct can_clock clock;
170 const unsigned int timestamp_freq;
171 const struct can_bittiming_const * const bittiming_const;
172 const struct can_bittiming_const * const data_bittiming_const;
173};
174
175extern const struct kvaser_usb_dev_ops kvaser_usb_hydra_dev_ops;
176extern const struct kvaser_usb_dev_ops kvaser_usb_leaf_dev_ops;
177
178int kvaser_usb_recv_cmd(const struct kvaser_usb *dev, void *cmd, int len,
179 int *actual_len);
180
181int kvaser_usb_send_cmd(const struct kvaser_usb *dev, void *cmd, int len);
182
183int kvaser_usb_send_cmd_async(struct kvaser_usb_net_priv *priv, void *cmd,
184 int len);
185
186int kvaser_usb_can_rx_over_error(struct net_device *netdev);
187#endif
188
