1 /*-------------------------------------------------------------------------*/
2 /* list of all controllers using this driver
3 * */
4
5 static LIST_HEAD (hci_hcd_list);
6
7 /* URB states (urb_state) */
8 /* isoc, interrupt single state */
9
10 /* bulk transfer main state and 0-length packet */
11 #define US_BULK 0
12 #define US_BULK0 1
13 /* three setup states */
14 #define US_CTRL_SETUP 2
15 #define US_CTRL_DATA 1
16 #define US_CTRL_ACK 0
17
18 /*-------------------------------------------------------------------------*/
19 /* HC private part of a device descriptor
20 * */
21
22 #define NUM_EDS 32
23
24 typedef struct epd {
25 struct urb *pipe_head;
26 struct list_head urb_queue;
27 // int urb_state;
28 struct timer_list timeout;
29 int last_iso; /* timestamp of last queued ISOC transfer */
30
31 } epd_t;
32
33 struct hci_device {
34 epd_t ed[NUM_EDS];
35 };
36
37 /*-------------------------------------------------------------------------*/
38 /* Virtual Root HUB
39 */
40
41 #define usb_to_hci(usb) ((struct hci_device *)(usb)->hcpriv)
42
43 struct virt_root_hub {
44 int devnum; /* Address of Root Hub endpoint */
45 void *urb; /* interrupt URB of root hub */
46 int send; /* active flag */
47 int interval; /* intervall of roothub interrupt transfers */
48 struct timer_list rh_int_timer; /* intervall timer for rh interrupt EP */
49 };
50
51 #if 1
52 /* USB HUB CONSTANTS (not OHCI-specific; see hub.h and USB spec) */
53
54 /* destination of request */
55 #define RH_INTERFACE 0x01
56 #define RH_ENDPOINT 0x02
57 #define RH_OTHER 0x03
58
59 #define RH_CLASS 0x20
60 #define RH_VENDOR 0x40
61
62 /* Requests: bRequest << 8 | bmRequestType */
63 #define RH_GET_STATUS 0x0080
64 #define RH_CLEAR_FEATURE 0x0100
65 #define RH_SET_FEATURE 0x0300
66 #define RH_SET_ADDRESS 0x0500
67 #define RH_GET_DESCRIPTOR 0x0680
68 #define RH_SET_DESCRIPTOR 0x0700
69 #define RH_GET_CONFIGURATION 0x0880
70 #define RH_SET_CONFIGURATION 0x0900
71 #define RH_GET_STATE 0x0280
72 #define RH_GET_INTERFACE 0x0A80
73 #define RH_SET_INTERFACE 0x0B00
74 #define RH_SYNC_FRAME 0x0C80
75 /* Our Vendor Specific Request */
76 #define RH_SET_EP 0x2000
77
78 /* Hub port features */
79 #define RH_PORT_CONNECTION 0x00
80 #define RH_PORT_ENABLE 0x01
81 #define RH_PORT_SUSPEND 0x02
82 #define RH_PORT_OVER_CURRENT 0x03
83 #define RH_PORT_RESET 0x04
84 #define RH_PORT_POWER 0x08
85 #define RH_PORT_LOW_SPEED 0x09
86
87 #define RH_C_PORT_CONNECTION 0x10
88 #define RH_C_PORT_ENABLE 0x11
89 #define RH_C_PORT_SUSPEND 0x12
90 #define RH_C_PORT_OVER_CURRENT 0x13
91 #define RH_C_PORT_RESET 0x14
92
93 /* Hub features */
94 #define RH_C_HUB_LOCAL_POWER 0x00
95 #define RH_C_HUB_OVER_CURRENT 0x01
96
97 #define RH_DEVICE_REMOTE_WAKEUP 0x00
98 #define RH_ENDPOINT_STALL 0x01
99
100 #endif
101
102 /*-------------------------------------------------------------------------*/
103 /* struct for each HC
104 */
105
106 #define MAX_TRANS 32
107
108 typedef struct td {
109 struct urb *urb;
110 __u16 len;
111 __u16 iso_index;
112 } td_t;
113
114 typedef struct td_array {
115 int len;
116 td_t td[MAX_TRANS];
117 } td_array_t;
118
119 typedef struct hci {
120 struct virt_root_hub rh; /* roothub */
121 wait_queue_head_t waitq; /* deletion of URBs and devices needs a waitqueue */
122 int active; /* HC is operating */
123
124 struct list_head ctrl_list; /* set of ctrl endpoints */
125 struct list_head bulk_list; /* set of bulk endpoints */
126 struct list_head iso_list; /* set of isoc endpoints */
127 struct list_head intr_list; /* ordered (tree) set of int endpoints */
128 struct list_head del_list; /* set of entpoints to be deleted */
129
130 td_array_t *td_array;
131 td_array_t a_td_array;
132 td_array_t i_td_array[2];
133
134 struct list_head hci_hcd_list; /* list of all hci_hcd */
135 struct usb_bus *bus; /* our bus */
136
137 // int trans; /* number of transactions pending */
138 int active_urbs;
139 int active_trans;
140 int frame_number; /* frame number */
141 hcipriv_t hp; /* individual part of hc type */
142 int nakCnt;
143 int last_packet_nak;
144
145 } hci_t;
146
147 /*-------------------------------------------------------------------------*/
148 /* condition (error) CC codes and mapping OHCI like
149 */
150
151 #define TD_CC_NOERROR 0x00
152 #define TD_CC_CRC 0x01
153 #define TD_CC_BITSTUFFING 0x02
154 #define TD_CC_DATATOGGLEM 0x03
155 #define TD_CC_STALL 0x04
156 #define TD_DEVNOTRESP 0x05
157 #define TD_PIDCHECKFAIL 0x06
158 #define TD_UNEXPECTEDPID 0x07
159 #define TD_DATAOVERRUN 0x08
160 #define TD_DATAUNDERRUN 0x09
161 #define TD_BUFFEROVERRUN 0x0C
162 #define TD_BUFFERUNDERRUN 0x0D
163 #define TD_NOTACCESSED 0x0F
164
165
166 /* urb interface functions */
167 static int hci_get_current_frame_number (struct usb_device *usb_dev);
168 static int hci_unlink_urb (struct urb * urb);
169
170 static int qu_queue_urb (hci_t * hci, struct urb * urb);
171
172 /* root hub */
173 static int rh_init_int_timer (struct urb * urb);
174 static int rh_submit_urb (struct urb * urb);
175 static int rh_unlink_urb (struct urb * urb);
176
177 /* schedule functions */
178 static int sh_add_packet (hci_t * hci, struct urb * urb);
179
180 /* hc specific functions */
181 static inline void hc_flush_data_cache (hci_t * hci, void *data, int len);
182 static inline int hc_parse_trans (hci_t * hci, int *actbytes, __u8 * data,
183 int *cc, int *toggle, int length, int pid,
184 int urb_state);
185 static inline int hc_add_trans (hci_t * hci, int len, void *data, int toggle,
186 int maxps, int slow, int endpoint, int address,
187 int pid, int format, int urb_state);
188
189 static void hc_start_int (hci_t * hci);
190 static void hc_stop_int (hci_t * hci);
191
192 /* debug| print the main components of an URB
193 * small: 0) header + data packets 1) just header */
194
urb_print(struct urb * urb,char * str,int small)195 static void urb_print (struct urb * urb, char *str, int small)
196 {
197 unsigned int pipe = urb->pipe;
198 int i, len;
199
200 if (!urb->dev || !urb->dev->bus) {
201 dbg ("%s URB: no dev", str);
202 return;
203 }
204
205 printk ("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,flags:%4x,len:%d/%d,stat:%d(%x)\n",
206 str, hci_get_current_frame_number (urb->dev),
207 usb_pipedevice (pipe), usb_pipeendpoint (pipe),
208 usb_pipeout (pipe) ? 'O' : 'I',
209 usb_pipetype (pipe) < 2 ? (usb_pipeint (pipe) ? "INTR" : "ISOC")
210 : (usb_pipecontrol (pipe) ? "CTRL" : "BULK"), urb->transfer_flags,
211 urb->actual_length, urb->transfer_buffer_length, urb->status,
212 urb->status);
213 if (!small) {
214 if (usb_pipecontrol (pipe)) {
215 printk (__FILE__ ": cmd(8):");
216 for (i = 0; i < 8; i++)
217 printk (" %02x", ((__u8 *) urb->setup_packet)[i]);
218 printk ("\n");
219 }
220 if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
221 printk (__FILE__ ": data(%d/%d):", urb->actual_length,
222 urb->transfer_buffer_length);
223 len = usb_pipeout (pipe) ? urb-> transfer_buffer_length : urb->actual_length;
224 for (i = 0; i < 2096 && i < len; i++)
225 printk (" %02x", ((__u8 *) urb->transfer_buffer)[i]);
226 printk ("%s stat:%d\n", i < len ? "..." : "",
227 urb->status);
228 }
229 }
230 }
231