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author	Peng Wu <alexepico@gmail.com>	2011-10-11 14:56:23 +0800
committer	Peng Wu <alexepico@gmail.com>	2011-10-11 14:56:23 +0800
commit	127a5ce640ec5282bbb4b473c01c5366e3c5e2f2 (patch)
tree	3c6b579b801b4ad8ecf61e84e461f33c9a401b26 /utils/training/k_mixture_model.h
parent	eecf06e590cfead43cd54940698523c1b5753141 (diff)
download	libpinyin-127a5ce640ec5282bbb4b473c01c5366e3c5e2f2.tar.gz libpinyin-127a5ce640ec5282bbb4b473c01c5366e3c5e2f2.tar.xz libpinyin-127a5ce640ec5282bbb4b473c01c5366e3c5e2f2.zip

fixes fsf address

Diffstat (limited to 'utils/training/k_mixture_model.h')

-rw-r--r--

utils/training/k_mixture_model.h

1 files changed, 1 insertions, 1 deletions

/* * TTY over Blackfin JTAG Communication * * Copyright 2008-2009 Analog Devices Inc. * * Enter bugs at http://blackfin.uclinux.org/ * * Licensed under the GPL-2 or later. */ #define DRV_NAME "bfin-jtag-comm" #define DEV_NAME "ttyBFJC" #define pr_fmt(fmt) DRV_NAME ": " fmt #include <linux/circ_buf.h> #include <linux/console.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/kernel.h> #include <linux/kthread.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/tty.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> #include <linux/atomic.h> #define pr_init(fmt, args...) ({ static const __initconst char __fmt[] = fmt; printk(__fmt, ## args); }) /* See the Debug/Emulation chapter in the HRM */ #define EMUDOF 0x00000001 /* EMUDAT_OUT full & valid */ #define EMUDIF 0x00000002 /* EMUDAT_IN full & valid */ #define EMUDOOVF 0x00000004 /* EMUDAT_OUT overflow */ #define EMUDIOVF 0x00000008 /* EMUDAT_IN overflow */ static inline uint32_t bfin_write_emudat(uint32_t emudat) { __asm__ __volatile__("emudat = %0;" : : "d"(emudat)); return emudat; } static inline uint32_t bfin_read_emudat(void) { uint32_t emudat; __asm__ __volatile__("%0 = emudat;" : "=d"(emudat)); return emudat; } static inline uint32_t bfin_write_emudat_chars(char a, char b, char c, char d) { return bfin_write_emudat((a << 0) | (b << 8) | (c << 16) | (d << 24)); } #define CIRC_SIZE 2048 /* see comment in tty_io.c:do_tty_write() */ #define CIRC_MASK (CIRC_SIZE - 1) #define circ_empty(circ) ((circ)->head == (circ)->tail) #define circ_free(circ) CIRC_SPACE((circ)->head, (circ)->tail, CIRC_SIZE) #define circ_cnt(circ) CIRC_CNT((circ)->head, (circ)->tail, CIRC_SIZE) #define circ_byte(circ, idx) ((circ)->buf[(idx) & CIRC_MASK]) static struct tty_driver *bfin_jc_driver; static struct task_struct *bfin_jc_kthread; static struct tty_struct * volatile bfin_jc_tty; static unsigned long bfin_jc_count; static DEFINE_MUTEX(bfin_jc_tty_mutex); static volatile struct circ_buf bfin_jc_write_buf; static int bfin_jc_emudat_manager(void *arg) { uint32_t inbound_len = 0, outbound_len = 0; while (!kthread_should_stop()) { /* no one left to give data to, so sleep */ if (bfin_jc_tty == NULL && circ_empty(&bfin_jc_write_buf)) { pr_debug("waiting for readers\n"); __set_current_state(TASK_UNINTERRUPTIBLE); schedule(); __set_current_state(TASK_RUNNING); } /* no data available, so just chill */ if (!(bfin_read_DBGSTAT() & EMUDIF) && circ_empty(&bfin_jc_write_buf)) { pr_debug("waiting for data (in_len = %i) (circ: %i %i)\n", inbound_len, bfin_jc_write_buf.tail, bfin_jc_write_buf.head); if (inbound_len) schedule(); else schedule_timeout_interruptible(HZ); continue; } /* if incoming data is ready, eat it */ if (bfin_read_DBGSTAT() & EMUDIF) { struct tty_struct *tty; mutex_lock(&bfin_jc_tty_mutex); tty = (struct tty_struct *)bfin_jc_tty; if (tty != NULL) { uint32_t emudat = bfin_read_emudat(); if (inbound_len == 0) { pr_debug("incoming length: 0x%08x\n", emudat); inbound_len = emudat; } else { size_t num_chars = (4 <= inbound_len ? 4 : inbound_len); pr_debug(" incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars); inbound_len -= num_chars; tty_insert_flip_string(tty, (unsigned char *)&emudat, num_chars); tty_flip_buffer_push(tty); } } mutex_unlock(&bfin_jc_tty_mutex); } /* if outgoing data is ready, post it */ if (!(bfin_read_DBGSTAT() & EMUDOF) && !circ_empty(&bfin_jc_write_buf)) { if (outbound_len == 0) { outbound_len = circ_cnt(&bfin_jc_write_buf); bfin_write_emudat(outbound_len); pr_debug("outgoing length: 0x%08x\n", outbound_len); } else { struct tty_struct *tty; int tail = bfin_jc_write_buf.tail; size_t ate = (4 <= outbound_len ? 4 : outbound_len); uint32_t emudat = bfin_write_emudat_chars( circ_byte(&bfin_jc_write_buf, tail + 0), circ_byte(&bfin_jc_write_buf, tail + 1), circ_byte(&bfin_jc_write_buf, tail + 2), circ_byte(&bfin_jc_write_buf, tail + 3) ); bfin_jc_write_buf.tail += ate; outbound_len -= ate; mutex_lock(&bfin_jc_tty_mutex); tty = (struct tty_struct *)bfin_jc_tty; if (tty) tty_wakeup(tty); mutex_unlock(&bfin_jc_tty_mutex); pr_debug(" outgoing data: 0x%08x (pushing %zu)\n", emudat, ate); } } } __set_current_state(TASK_RUNNING); return 0; } static int bfin_jc_open(struct tty_struct *tty, struct file *filp) { mutex_lock(&bfin_jc_tty_mutex); pr_debug("open %lu\n", bfin_jc_count); ++bfin_jc_count; bfin_jc_tty = tty; wake_up_process(bfin_jc_kthread); mutex_unlock(&bfin_jc_tty_mutex); return 0; } static void bfin_jc_close(struct tty_struct *tty, struct file *filp) { mutex_lock(&bfin_jc_tty_mutex); pr_debug("close %lu\n", bfin_jc_count); if (--bfin_jc_count == 0) bfin_jc_tty = NULL; wake_up_process(bfin_jc_kthread); mutex_unlock(&bfin_jc_tty_mutex); } /* XXX: we dont handle the put_char() case where we must handle count = 1 */ static int bfin_jc_circ_write(const unsigned char *buf, int count) { int i; count = min(count, circ_free(&bfin_jc_write_buf));


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