diff options
Diffstat (limited to 'packages/linux/linux-ezx-2.6.23/patches/mux-remove-flipbuffers.patch')
| -rw-r--r-- | packages/linux/linux-ezx-2.6.23/patches/mux-remove-flipbuffers.patch | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/packages/linux/linux-ezx-2.6.23/patches/mux-remove-flipbuffers.patch b/packages/linux/linux-ezx-2.6.23/patches/mux-remove-flipbuffers.patch new file mode 100644 index 0000000000..d4781f9fc7 --- /dev/null +++ b/packages/linux/linux-ezx-2.6.23/patches/mux-remove-flipbuffers.patch @@ -0,0 +1,269 @@ +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); ++ |