summaryrefslogtreecommitdiff
path: root/packages/linux/linux-ezx-2.6.21/patches/mux-remove-flipbuffers.patch
blob: d4781f9fc7b06a081e36b228e02bbe92d7f87071 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
Index: linux-2.6.16/drivers/char/ts0710_mux_usb.c
===================================================================
--- linux-2.6.16.orig/drivers/char/ts0710_mux_usb.c	2007-01-17 00:52:25.000000000 +0100
+++ linux-2.6.16/drivers/char/ts0710_mux_usb.c	2007-01-17 00:52:26.000000000 +0100
@@ -133,6 +133,7 @@

 	struct circ_buf		xmit;		/* write cric bufffer */
   	struct list_head 	in_buf_list;
+	spinlock_t		in_buf_lock;
 	char 			bulk_in_ep_mux,
 				bulk_out_ep_mux,
 				bulk_in_ep_dsplog;
@@ -204,9 +205,39 @@
 		return;
 	}
 	memcpy(inbuf->body, (unsigned char*)urb->transfer_buffer, count);
+	spin_lock(&bvd_ipc->in_buf_lock);
 	list_add_tail(&inbuf->list, &bvd_ipc->in_buf_list);
+	spin_unlock(&bvd_ipc->in_buf_lock);
 }

+int get_from_inbuf_list(const unsigned char *buf, int dst_count)
+{
+	int ret = 0;
+	spin_lock(&bvd_ipc->in_buf_lock);
+	if (!(list_empty(&bvd_ipc->in_buf_list))) {
+		int src_count;
+		buf_list_t *inbuf;
+		struct list_head *ptr;
+
+		ptr = bvd_ipc->in_buf_list.next;
+		inbuf = list_entry(ptr, buf_list_t, list);
+		src_count = inbuf->size;
+		if (dst_count >= src_count) {
+			memcpy(buf, inbuf->body, src_count);
+			ret = src_count;
+			list_del(ptr);
+			kfree(inbuf->body);
+			kfree(inbuf);
+		} else {
+			bvd_dbg("get_from_inbuf_list: not enough space in destination buffer");
+		}
+	}
+	spin_unlock(&bvd_ipc->in_buf_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL(get_from_inbuf_list);
+
 static void ipcusb_timeout(unsigned long data)
 {
 	struct tty_struct *tty = &ipcusb_tty;
@@ -214,13 +245,14 @@

 	bvd_dbg("ipcusb_timeout***");

+	spin_lock(&bvd_ipc->in_buf_lock);
 	while (!(list_empty(&bvd_ipc->in_buf_list))) {
 		int count;
 		buf_list_t *inbuf;
 		struct list_head *ptr = NULL;

 		ptr = bvd_ipc->in_buf_list.next;
-		inbuf = list_entry (ptr, buf_list_t, list);
+		inbuf = list_entry(ptr, buf_list_t, list);
 		count = inbuf->size;
 		if (tty_insert_flip_string(tty, inbuf->body, count) >= count) {
 			list_del(ptr);
@@ -232,10 +264,12 @@
 			break;
 		}
 	}
+	spin_unlock(&bvd_ipc->in_buf_lock);

 	if (usb_mux_dispatcher)
 		usb_mux_dispatcher(tty);	/**call Liu changhui's func.**/

+	spin_lock(&bvd_ipc->in_buf_lock);
 	if (list_empty(&bvd_ipc->in_buf_list)) {
 		urb->actual_length = 0;
 		urb->dev = bvd_ipc->ipc_dev;
@@ -246,6 +280,7 @@
 		ipcusb_timer.data = (unsigned long)urb;
 		mod_timer(&ipcusb_timer, jiffies+(10*HZ/1000));
 	}
+	spin_unlock(&bvd_ipc->in_buf_lock);
 }

 static void usb_ipc_read_bulk(struct urb *urb, struct pt_regs *regs)
@@ -266,69 +301,11 @@
 	if (count > 0 && ((*ipcusb_bp_to_ap) != NULL))
 		(*ipcusb_bp_to_ap)(urb->transfer_buffer, urb->actual_length);

- 	if (!(list_empty(&bvd_ipc->in_buf_list))) {
-		int need_mux = 0;
-
- 		bvd_dbg("usb_ipc_read_bulk: some urbs in_buf_list");
-		if (count > 0) {
-			bvd_ipc->suspend_flag = 1;
-			append_to_inbuf_list(urb); /* append the current received urb */
-#if 0
-			if(jiffies - last_jiff > ICL_EVENT_INTERVAL)
-			{
-				last_jiff = jiffies;
-				queue_apm_event(KRNL_ICL, NULL);
-			}
-#endif
-		}
-
-		while (!(list_empty(&bvd_ipc->in_buf_list))) {
-			struct list_head* ptr = NULL;
-			ptr = bvd_ipc->in_buf_list.next;
-			inbuf = list_entry(ptr, buf_list_t, list);
-			count = inbuf->size;
-			need_mux = 1;
-
-			tty_insert_flip_string(tty, inbuf->body, count);
-
-			list_del(ptr);
-			kfree(inbuf->body);
-			inbuf->body = NULL;
-			kfree(inbuf);
-		}
-
-		if (usb_mux_dispatcher && need_mux)
-			usb_mux_dispatcher(tty); /* call Liu changhui's func. */
-
-		if (list_empty(&bvd_ipc->in_buf_list)) {
-			urb->actual_length = 0;
-			urb->dev = bvd_ipc->ipc_dev;
-			if (usb_submit_urb(urb, GFP_ATOMIC))
-				bvd_dbg("usb_ipc_read_bulk: "
-					"failed resubmitting read urb");
-			bvd_dbg("usb_ipc_read_bulk: resubmited read urb");
-		} else {
-			ipcusb_timer.data = (unsigned long)urb;
-			mod_timer(&ipcusb_timer, jiffies+(10*HZ/1000));
-		}
-	} else if (count > 0) {
- 		bvd_dbg("usb_ipc_read_bulk: no urbs in_buf_list");
+ 	if (count > 0) {
+ 		bvd_dbg("usb_ipc_read_bulk: inserting buffer into in_buf_list");
 		bvd_ipc->suspend_flag = 1;

-		if (tty_insert_flip_string(tty, urb->transfer_buffer,
-					   count) < count) {
-			bvd_ipc->suspend_flag = 1;
-			append_to_inbuf_list(urb);
-			ipcusb_timer.data = (unsigned long)urb;
-			mod_timer(&ipcusb_timer, jiffies+(10*HZ/1000));
-#if 0
-			if(jiffies - last_jiff > ICL_EVENT_INTERVAL)
-			{
-				last_jiff = jiffies;
-				queue_apm_event(KRNL_ICL, NULL);
-			}
-#endif
-		}
+		append_to_inbuf_list(urb);

 		if (usb_mux_dispatcher)
 			usb_mux_dispatcher(tty); /* call Liu changhui's func. */
@@ -337,13 +314,6 @@
 		urb->dev = bvd_ipc->ipc_dev;
 		if (usb_submit_urb(urb, GFP_ATOMIC))
 			bvd_dbg("failed resubmitting read urb");
-#if 0
-		if(jiffies - last_jiff > ICL_EVENT_INTERVAL)
-		{
-			last_jiff = jiffies;
-			queue_apm_event(KRNL_ICL, NULL);
-		}
-#endif
 		bvd_dbg("usb_ipc_read_bulk: resubmited read urb");
 	}

@@ -705,7 +675,8 @@
 	bvd_ipc->bulk_out_ep_mux= have_bulk_out_mux;
 	bvd_ipc->ipc_dev = usbdev;
 	bvd_ipc->writesize = writesize;
-	INIT_LIST_HEAD (&bvd_ipc->in_buf_list);
+	INIT_LIST_HEAD(&bvd_ipc->in_buf_list);
+	bvd_ipc->in_buf_lock = SPIN_LOCK_UNLOCKED;

 	bvd_ipc->bh.func = usbipc_bh_func;
 	bvd_ipc->bh.data = (unsigned long) bvd_ipc;
Index: linux-2.6.16/drivers/char/ts0710_mux.c
===================================================================
--- linux-2.6.16.orig/drivers/char/ts0710_mux.c	2007-01-17 00:52:23.000000000 +0100
+++ linux-2.6.16/drivers/char/ts0710_mux.c	2007-01-17 00:52:26.000000000 +0100
@@ -3149,7 +3149,7 @@
 static void receive_worker(void *private_)
 {
 	struct tty_struct *tty = COMM_FOR_MUX_TTY;
-	int i, count;
+	int i, count, tbuf_free, tbuf_read;
 	static unsigned char tbuf[TS0710MUX_MAX_BUF_SIZE];
 	static unsigned char *tbuf_ptr = &tbuf[0];
 	static unsigned char *start_flag = 0;
@@ -3167,29 +3167,39 @@

 	UNUSED_PARAM(private_);

-	if (!tty)
-		return;
+  	if (!tty)
+  		return;
+
+ 	while (1) {
+ 		tbuf_free = TS0710MUX_MAX_BUF_SIZE - (tbuf_ptr - tbuf);
+ 		TS0710_PRINTK("Reading max %i bytes from ts0710_mux_usb inbuf.\n", tbuf_free);
+ 		tbuf_read = get_from_inbuf_list(tbuf_ptr, tbuf_free);
+ 		if (tbuf_read == 0) {
+ 			break;
+ 		} else {
+ 			TS0710_PRINTK("Read %i bytes.\n", tbuf_read);
+ 		};
+ 		tbuf_ptr += tbuf_read;
+ 	};
+
+ 	count = (tbuf_ptr - tbuf);
+
+ 	// Should be impossible?
+ 	//if (count > (TS0710MUX_MAX_BUF_SIZE - (tbuf_ptr - tbuf))) {
+ 	//	TS0710_PRINTK
+ 	//	    ("MUX receive_worker: !!!!! Exceed buffer boundary !!!!!\n");
+ 	//	count = (TS0710MUX_MAX_BUF_SIZE - (tbuf_ptr - tbuf));
+ 	//}

 #ifdef USB_FOR_MUX
-	TS0710_DEBUG("Receive following bytes from IPC-USB");
+ 	TS0710_DEBUG("Received following bytes from IPC-USB");
 #else
-	TS0710_DEBUG("Receive following bytes from UART");
+ 	TS0710_DEBUG("Received following bytes from UART");
 #endif
-
-	TS0710_DEBUGHEX(cp, count);
-
-	if (count > (TS0710MUX_MAX_BUF_SIZE - (tbuf_ptr - tbuf))) {
-		TS0710_PRINTK
-		    ("MUX receive_worker: !!!!! Exceed buffer boundary !!!!!\n");
-		count = (TS0710MUX_MAX_BUF_SIZE - (tbuf_ptr - tbuf));
-	}
-
-	count = tty_buffer_request_room(tty, count);
-
-	for (i = 0; i < count; i++)
-		tty_insert_flip_char(tty, tbuf_ptr[i], TTY_NORMAL);
-
-	tbuf_ptr += count;
+  	TS0710_DEBUGHEX(tbuf, count);
+
+ 	//gets updated above
+ 	//tbuf_ptr += count;
 	search = &tbuf[0];

 	if (test_and_set_bit(RECV_RUNNING, &mux_recv_flags)) {
Index: linux-2.6.16/drivers/char/ts0710_mux_usb.h
===================================================================
--- linux-2.6.16.orig/drivers/char/ts0710_mux_usb.h	2007-01-17 00:52:23.000000000 +0100
+++ linux-2.6.16/drivers/char/ts0710_mux_usb.h	2007-01-17 00:52:26.000000000 +0100
@@ -27,3 +27,6 @@
 extern struct tty_struct *usb_for_mux_tty;
 extern void (*usb_mux_dispatcher)(struct tty_struct *tty);
 extern void (*usb_mux_sender)(void);
+
+extern int get_from_inbuf_list(const unsigned char *buf, int dst_count);
+