Messages in this thread | | | Date | Wed, 31 Aug 2011 21:52:34 +0200 | Subject | Re: [PATCH 4/4] TTY: serial, move 68360 driver to staging | From | Geert Uytterhoeven <> |
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On Wed, Aug 31, 2011 at 21:24, Jiri Slaby <jslaby@suse.cz> wrote: > This driver has been broken at least since 2008. At that time, > a88487c79b (Fix compile errors in SGI console drivers) broke this > driver completely. > > And since nobody noticed for the past 3 years, move it into staging. I > think this will rot there and we will throw it away completely after > some time. Or maybe someone will volunteer to fix it ;). > > Signed-off-by: Jiri Slaby <jslaby@suse.cz> > Cc: Geert Uytterhoeven <geert@linux-m68k.org> > Cc: Alan Cox <alan@linux.intel.com> > --- > Cc: linux-m68k@lists.linux-m68k.org
This is a uClinux driver.
> drivers/staging/Kconfig | 2 + > drivers/staging/Makefile | 1 + > drivers/staging/serial/68360serial.c | 2979 ++++++++++++++++++++++++++++++++++ > drivers/staging/serial/Kconfig | 16 + > drivers/staging/serial/Makefile | 1 + > drivers/staging/serial/TODO | 6 + > drivers/tty/serial/68360serial.c | 2979 ---------------------------------- > drivers/tty/serial/Kconfig | 17 - > drivers/tty/serial/Makefile | 1 - > 9 files changed, 3005 insertions(+), 2997 deletions(-) > create mode 100644 drivers/staging/serial/68360serial.c > create mode 100644 drivers/staging/serial/Kconfig > create mode 100644 drivers/staging/serial/Makefile > create mode 100644 drivers/staging/serial/TODO > delete mode 100644 drivers/tty/serial/68360serial.c > > diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig > index eac0a7f..cb3b60d 100644 > --- a/drivers/staging/Kconfig > +++ b/drivers/staging/Kconfig > @@ -24,6 +24,8 @@ menuconfig STAGING > > if STAGING > > +source "drivers/staging/serial/Kconfig" > + > source "drivers/staging/et131x/Kconfig" > > source "drivers/staging/slicoss/Kconfig" > diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile > index 20be112..1d865d2 100644 > --- a/drivers/staging/Makefile > +++ b/drivers/staging/Makefile > @@ -3,6 +3,7 @@ > # fix for build system bug... > obj-$(CONFIG_STAGING) += staging.o > > +obj-y += serial/ > obj-$(CONFIG_ET131X) += et131x/ > obj-$(CONFIG_SLICOSS) += slicoss/ > obj-$(CONFIG_VIDEO_GO7007) += go7007/ > diff --git a/drivers/staging/serial/68360serial.c b/drivers/staging/serial/68360serial.c > new file mode 100644 > index 0000000..0a3e878 > --- /dev/null > +++ b/drivers/staging/serial/68360serial.c > @@ -0,0 +1,2979 @@ > +/* > + * UART driver for 68360 CPM SCC or SMC > + * Copyright (c) 2000 D. Jeff Dionne <jeff@uclinux.org>, > + * Copyright (c) 2000 Michael Leslie <mleslie@lineo.ca> > + * Copyright (c) 1997 Dan Malek <dmalek@jlc.net> > + * > + * I used the serial.c driver as the framework for this driver. > + * Give credit to those guys. > + * The original code was written for the MBX860 board. I tried to make > + * it generic, but there may be some assumptions in the structures that > + * have to be fixed later. > + * To save porting time, I did not bother to change any object names > + * that are not accessed outside of this file. > + * It still needs lots of work........When it was easy, I included code > + * to support the SCCs, but this has never been tested, nor is it complete. > + * Only the SCCs support modem control, so that is not complete either. > + * > + * This module exports the following rs232 io functions: > + * > + * int rs_360_init(void); > + */ > + > +#include <linux/module.h> > +#include <linux/errno.h> > +#include <linux/signal.h> > +#include <linux/sched.h> > +#include <linux/timer.h> > +#include <linux/interrupt.h> > +#include <linux/tty.h> > +#include <linux/tty_flip.h> > +#include <linux/serial.h> > +#include <linux/serialP.h> > +#include <linux/major.h> > +#include <linux/string.h> > +#include <linux/fcntl.h> > +#include <linux/ptrace.h> > +#include <linux/mm.h> > +#include <linux/init.h> > +#include <linux/delay.h> > +#include <asm/irq.h> > +#include <asm/m68360.h> > +#include <asm/commproc.h> > + > + > +#ifdef CONFIG_KGDB > +extern void breakpoint(void); > +extern void set_debug_traps(void); > +extern int kgdb_output_string (const char* s, unsigned int count); > +#endif > + > + > +/* #ifdef CONFIG_SERIAL_CONSOLE */ /* This seems to be a post 2.0 thing - mles */ > +#include <linux/console.h> > +#include <linux/jiffies.h> > + > +/* this defines the index into rs_table for the port to use > + */ > +#ifndef CONFIG_SERIAL_CONSOLE_PORT > +#define CONFIG_SERIAL_CONSOLE_PORT 1 /* ie SMC2 - note USE_SMC2 must be defined */ > +#endif > +/* #endif */ > + > +#if 0 > +/* SCC2 for console > + */ > +#undef CONFIG_SERIAL_CONSOLE_PORT > +#define CONFIG_SERIAL_CONSOLE_PORT 2 > +#endif > + > + > +#define TX_WAKEUP ASYNC_SHARE_IRQ > + > +static char *serial_name = "CPM UART driver"; > +static char *serial_version = "0.03"; > + > +static struct tty_driver *serial_driver; > +int serial_console_setup(struct console *co, char *options); > + > +/* > + * Serial driver configuration section. Here are the various options: > + */ > +#define SERIAL_PARANOIA_CHECK > +#define CONFIG_SERIAL_NOPAUSE_IO > +#define SERIAL_DO_RESTART > + > +/* Set of debugging defines */ > + > +#undef SERIAL_DEBUG_INTR > +#undef SERIAL_DEBUG_OPEN > +#undef SERIAL_DEBUG_FLOW > +#undef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT > + > +#define _INLINE_ inline > + > +#define DBG_CNT(s) > + > +/* We overload some of the items in the data structure to meet our > + * needs. For example, the port address is the CPM parameter ram > + * offset for the SCC or SMC. The maximum number of ports is 4 SCCs and > + * 2 SMCs. The "hub6" field is used to indicate the channel number, with > + * a flag indicating SCC or SMC, and the number is used as an index into > + * the CPM parameter area for this device. > + * The "type" field is currently set to 0, for PORT_UNKNOWN. It is > + * not currently used. I should probably use it to indicate the port > + * type of SMC or SCC. > + * The SMCs do not support any modem control signals. > + */ > +#define smc_scc_num hub6 > +#define NUM_IS_SCC ((int)0x00010000) > +#define PORT_NUM(P) ((P) & 0x0000ffff) > + > + > +#if defined (CONFIG_UCQUICC) > + > +volatile extern void *_periph_base; > +/* sipex transceiver > + * mode bits for are on pins > + * > + * SCC2 d16..19 > + * SCC3 d20..23 > + * SCC4 d24..27 > + */ > +#define SIPEX_MODE(n,m) ((m & 0x0f)<<(16+4*(n-1))) > + > +static uint sipex_mode_bits = 0x00000000; > + > +#endif > + > +/* There is no `serial_state' defined back here in 2.0. > + * Try to get by with serial_struct > + */ > +/* #define serial_state serial_struct */ > + > +/* 2.4 -> 2.0 portability problem: async_icount in 2.4 has a few > + * extras: */ > + > +#if 0 > +struct async_icount_24 { > + __u32 cts, dsr, rng, dcd, tx, rx; > + __u32 frame, parity, overrun, brk; > + __u32 buf_overrun; > +} icount; > +#endif > + > +#if 0 > + > +struct serial_state { > + int magic; > + int baud_base; > + unsigned long port; > + int irq; > + int flags; > + int hub6; > + int type; > + int line; > + int revision; /* Chip revision (950) */ > + int xmit_fifo_size; > + int custom_divisor; > + int count; > + u8 *iomem_base; > + u16 iomem_reg_shift; > + unsigned short close_delay; > + unsigned short closing_wait; /* time to wait before closing */ > + struct async_icount_24 icount; > + int io_type; > + struct async_struct *info; > +}; > +#endif > + > +#define SSTATE_MAGIC 0x5302 > + > + > + > +/* SMC2 is sometimes used for low performance TDM interfaces. Define > + * this as 1 if you want SMC2 as a serial port UART managed by this driver. > + * Define this as 0 if you wish to use SMC2 for something else. > + */ > +#define USE_SMC2 1 > + > +#if 0 > +/* Define SCC to ttySx mapping. */ > +#define SCC_NUM_BASE (USE_SMC2 + 1) /* SCC base tty "number" */ > + > +/* Define which SCC is the first one to use for a serial port. These > + * are 0-based numbers, i.e. this assumes the first SCC (SCC1) is used > + * for Ethernet, and the first available SCC for serial UART is SCC2. > + * NOTE: IF YOU CHANGE THIS, you have to change the PROFF_xxx and > + * interrupt vectors in the table below to match. > + */ > +#define SCC_IDX_BASE 1 /* table index */ > +#endif > + > + > +/* Processors other than the 860 only get SMCs configured by default. > + * Either they don't have SCCs or they are allocated somewhere else. > + * Of course, there are now 860s without some SCCs, so we will need to > + * address that someday. > + * The Embedded Planet Multimedia I/O cards use TDM interfaces to the > + * stereo codec parts, and we use SMC2 to help support that. > + */ > +static struct serial_state rs_table[] = { > +/* type line PORT IRQ FLAGS smc_scc_num (F.K.A. hub6) */ > + { 0, 0, PRSLOT_SMC1, CPMVEC_SMC1, 0, 0 } /* SMC1 ttyS0 */ > +#if USE_SMC2 > + ,{ 0, 0, PRSLOT_SMC2, CPMVEC_SMC2, 0, 1 } /* SMC2 ttyS1 */ > +#endif > + > +#if defined(CONFIG_SERIAL_68360_SCC) > + ,{ 0, 0, PRSLOT_SCC2, CPMVEC_SCC2, 0, (NUM_IS_SCC | 1) } /* SCC2 ttyS2 */ > + ,{ 0, 0, PRSLOT_SCC3, CPMVEC_SCC3, 0, (NUM_IS_SCC | 2) } /* SCC3 ttyS3 */ > + ,{ 0, 0, PRSLOT_SCC4, CPMVEC_SCC4, 0, (NUM_IS_SCC | 3) } /* SCC4 ttyS4 */ > +#endif > +}; > + > +#define NR_PORTS (sizeof(rs_table)/sizeof(struct serial_state)) > + > +/* The number of buffer descriptors and their sizes. > + */ > +#define RX_NUM_FIFO 4 > +#define RX_BUF_SIZE 32 > +#define TX_NUM_FIFO 4 > +#define TX_BUF_SIZE 32 > + > +#define CONSOLE_NUM_FIFO 2 > +#define CONSOLE_BUF_SIZE 4 > + > +char *console_fifos[CONSOLE_NUM_FIFO * CONSOLE_BUF_SIZE]; > + > +/* The async_struct in serial.h does not really give us what we > + * need, so define our own here. > + */ > +typedef struct serial_info { > + int magic; > + int flags; > + > + struct serial_state *state; > + /* struct serial_struct *state; */ > + /* struct async_struct *state; */ > + > + struct tty_struct *tty; > + int read_status_mask; > + int ignore_status_mask; > + int timeout; > + int line; > + int x_char; /* xon/xoff character */ > + int close_delay; > + unsigned short closing_wait; > + unsigned short closing_wait2; > + unsigned long event; > + unsigned long last_active; > + int blocked_open; /* # of blocked opens */ > + struct work_struct tqueue; > + struct work_struct tqueue_hangup; > + wait_queue_head_t open_wait; > + wait_queue_head_t close_wait; > + > + > +/* CPM Buffer Descriptor pointers. > + */ > + QUICC_BD *rx_bd_base; > + QUICC_BD *rx_cur; > + QUICC_BD *tx_bd_base; > + QUICC_BD *tx_cur; > +} ser_info_t; > + > + > +/* since kmalloc_init() does not get called until much after this initialization: */ > +static ser_info_t quicc_ser_info[NR_PORTS]; > +static char rx_buf_pool[NR_PORTS * RX_NUM_FIFO * RX_BUF_SIZE]; > +static char tx_buf_pool[NR_PORTS * TX_NUM_FIFO * TX_BUF_SIZE]; > + > +static void change_speed(ser_info_t *info); > +static void rs_360_wait_until_sent(struct tty_struct *tty, int timeout); > + > +static inline int serial_paranoia_check(ser_info_t *info, > + char *name, const char *routine) > +{ > +#ifdef SERIAL_PARANOIA_CHECK > + static const char *badmagic = > + "Warning: bad magic number for serial struct (%s) in %s\n"; > + static const char *badinfo = > + "Warning: null async_struct for (%s) in %s\n"; > + > + if (!info) { > + printk(badinfo, name, routine); > + return 1; > + } > + if (info->magic != SERIAL_MAGIC) { > + printk(badmagic, name, routine); > + return 1; > + } > +#endif > + return 0; > +} > + > +/* > + * This is used to figure out the divisor speeds and the timeouts, > + * indexed by the termio value. The generic CPM functions are responsible > + * for setting and assigning baud rate generators for us. > + */ > +static int baud_table[] = { > + 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, > + 9600, 19200, 38400, 57600, 115200, 230400, 460800, 0 }; > + > +/* This sucks. There is a better way: */ > +#if defined(CONFIG_CONSOLE_9600) > + #define CONSOLE_BAUDRATE 9600 > +#elif defined(CONFIG_CONSOLE_19200) > + #define CONSOLE_BAUDRATE 19200 > +#elif defined(CONFIG_CONSOLE_115200) > + #define CONSOLE_BAUDRATE 115200 > +#else > + #warning "console baud rate undefined" > + #define CONSOLE_BAUDRATE 9600 > +#endif > + > +/* > + * ------------------------------------------------------------ > + * rs_stop() and rs_start() > + * > + * This routines are called before setting or resetting tty->stopped. > + * They enable or disable transmitter interrupts, as necessary. > + * ------------------------------------------------------------ > + */ > +static void rs_360_stop(struct tty_struct *tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + int idx; > + unsigned long flags; > + volatile struct scc_regs *sccp; > + volatile struct smc_regs *smcp; > + > + if (serial_paranoia_check(info, tty->name, "rs_stop")) > + return; > + > + local_irq_save(flags); > + idx = PORT_NUM(info->state->smc_scc_num); > + if (info->state->smc_scc_num & NUM_IS_SCC) { > + sccp = &pquicc->scc_regs[idx]; > + sccp->scc_sccm &= ~UART_SCCM_TX; > + } else { > + /* smcp = &cpmp->cp_smc[idx]; */ > + smcp = &pquicc->smc_regs[idx]; > + smcp->smc_smcm &= ~SMCM_TX; > + } > + local_irq_restore(flags); > +} > + > + > +static void rs_360_start(struct tty_struct *tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + int idx; > + unsigned long flags; > + volatile struct scc_regs *sccp; > + volatile struct smc_regs *smcp; > + > + if (serial_paranoia_check(info, tty->name, "rs_stop")) > + return; > + > + local_irq_save(flags); > + idx = PORT_NUM(info->state->smc_scc_num); > + if (info->state->smc_scc_num & NUM_IS_SCC) { > + sccp = &pquicc->scc_regs[idx]; > + sccp->scc_sccm |= UART_SCCM_TX; > + } else { > + smcp = &pquicc->smc_regs[idx]; > + smcp->smc_smcm |= SMCM_TX; > + } > + local_irq_restore(flags); > +} > + > +/* > + * ---------------------------------------------------------------------- > + * > + * Here starts the interrupt handling routines. All of the following > + * subroutines are declared as inline and are folded into > + * rs_interrupt(). They were separated out for readability's sake. > + * > + * Note: rs_interrupt() is a "fast" interrupt, which means that it > + * runs with interrupts turned off. People who may want to modify > + * rs_interrupt() should try to keep the interrupt handler as fast as > + * possible. After you are done making modifications, it is not a bad > + * idea to do: > + * > + * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c > + * > + * and look at the resulting assemble code in serial.s. > + * > + * - Ted Ts'o (tytso@mit.edu), 7-Mar-93 > + * ----------------------------------------------------------------------- > + */ > + > +static _INLINE_ void receive_chars(ser_info_t *info) > +{ > + struct tty_struct *tty = info->port.tty; > + unsigned char ch, flag, *cp; > + /*int ignored = 0;*/ > + int i; > + ushort status; > + struct async_icount *icount; > + /* struct async_icount_24 *icount; */ > + volatile QUICC_BD *bdp; > + > + icount = &info->state->icount; > + > + /* Just loop through the closed BDs and copy the characters into > + * the buffer. > + */ > + bdp = info->rx_cur; > + for (;;) { > + if (bdp->status & BD_SC_EMPTY) /* If this one is empty */ > + break; /* we are all done */ > + > + /* The read status mask tell us what we should do with > + * incoming characters, especially if errors occur. > + * One special case is the use of BD_SC_EMPTY. If > + * this is not set, we are supposed to be ignoring > + * inputs. In this case, just mark the buffer empty and > + * continue. > + */ > + if (!(info->read_status_mask & BD_SC_EMPTY)) { > + bdp->status |= BD_SC_EMPTY; > + bdp->status &= > + ~(BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_OV); > + > + if (bdp->status & BD_SC_WRAP) > + bdp = info->rx_bd_base; > + else > + bdp++; > + continue; > + } > + > + /* Get the number of characters and the buffer pointer. > + */ > + i = bdp->length; > + /* cp = (unsigned char *)__va(bdp->buf); */ > + cp = (char *)bdp->buf; > + status = bdp->status; > + > + while (i-- > 0) { > + ch = *cp++; > + icount->rx++; > + > +#ifdef SERIAL_DEBUG_INTR > + printk("DR%02x:%02x...", ch, status); > +#endif > + flag = TTY_NORMAL; > + > + if (status & (BD_SC_BR | BD_SC_FR | > + BD_SC_PR | BD_SC_OV)) { > + /* > + * For statistics only > + */ > + if (status & BD_SC_BR) > + icount->brk++; > + else if (status & BD_SC_PR) > + icount->parity++; > + else if (status & BD_SC_FR) > + icount->frame++; > + if (status & BD_SC_OV) > + icount->overrun++; > + > + /* > + * Now check to see if character should be > + * ignored, and mask off conditions which > + * should be ignored. > + if (status & info->ignore_status_mask) { > + if (++ignored > 100) > + break; > + continue; > + } > + */ > + status &= info->read_status_mask; > + > + if (status & (BD_SC_BR)) { > +#ifdef SERIAL_DEBUG_INTR > + printk("handling break...."); > +#endif > + *tty->flip.flag_buf_ptr = TTY_BREAK; > + if (info->flags & ASYNC_SAK) > + do_SAK(tty); > + } else if (status & BD_SC_PR) > + flag = TTY_PARITY; > + else if (status & BD_SC_FR) > + flag = TTY_FRAME; > + } > + tty_insert_flip_char(tty, ch, flag); > + if (status & BD_SC_OV) > + /* > + * Overrun is special, since it's > + * reported immediately, and doesn't > + * affect the current character > + */ > + tty_insert_flip_char(tty, 0, TTY_OVERRUN); > + } > + > + /* This BD is ready to be used again. Clear status. > + * Get next BD. > + */ > + bdp->status |= BD_SC_EMPTY; > + bdp->status &= ~(BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_OV); > + > + if (bdp->status & BD_SC_WRAP) > + bdp = info->rx_bd_base; > + else > + bdp++; > + } > + > + info->rx_cur = (QUICC_BD *)bdp; > + > + tty_schedule_flip(tty); > +} > + > +static _INLINE_ void receive_break(ser_info_t *info) > +{ > + struct tty_struct *tty = info->port.tty; > + > + info->state->icount.brk++; > + /* Check to see if there is room in the tty buffer for > + * the break. If not, we exit now, losing the break. FIXME > + */ > + tty_insert_flip_char(tty, 0, TTY_BREAK); > + tty_schedule_flip(tty); > +} > + > +static _INLINE_ void transmit_chars(ser_info_t *info) > +{ > + > + if ((info->flags & TX_WAKEUP) || > + (info->port.tty->flags & (1 << TTY_DO_WRITE_WAKEUP))) { > + schedule_work(&info->tqueue); > + } > + > +#ifdef SERIAL_DEBUG_INTR > + printk("THRE..."); > +#endif > +} > + > +#ifdef notdef > + /* I need to do this for the SCCs, so it is left as a reminder. > + */ > +static _INLINE_ void check_modem_status(struct async_struct *info) > +{ > + int status; > + /* struct async_icount *icount; */ > + struct async_icount_24 *icount; > + > + status = serial_in(info, UART_MSR); > + > + if (status & UART_MSR_ANY_DELTA) { > + icount = &info->state->icount; > + /* update input line counters */ > + if (status & UART_MSR_TERI) > + icount->rng++; > + if (status & UART_MSR_DDSR) > + icount->dsr++; > + if (status & UART_MSR_DDCD) { > + icount->dcd++; > +#ifdef CONFIG_HARD_PPS > + if ((info->flags & ASYNC_HARDPPS_CD) && > + (status & UART_MSR_DCD)) > + hardpps(); > +#endif > + } > + if (status & UART_MSR_DCTS) > + icount->cts++; > + wake_up_interruptible(&info->delta_msr_wait); > + } > + > + if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { > +#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR)) > + printk("ttys%d CD now %s...", info->line, > + (status & UART_MSR_DCD) ? "on" : "off"); > +#endif > + if (status & UART_MSR_DCD) > + wake_up_interruptible(&info->open_wait); > + else { > +#ifdef SERIAL_DEBUG_OPEN > + printk("scheduling hangup..."); > +#endif > + queue_task(&info->tqueue_hangup, > + &tq_scheduler); > + } > + } > + if (info->flags & ASYNC_CTS_FLOW) { > + if (info->port.tty->hw_stopped) { > + if (status & UART_MSR_CTS) { > +#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW)) > + printk("CTS tx start..."); > +#endif > + info->port.tty->hw_stopped = 0; > + info->IER |= UART_IER_THRI; > + serial_out(info, UART_IER, info->IER); > + rs_sched_event(info, RS_EVENT_WRITE_WAKEUP); > + return; > + } > + } else { > + if (!(status & UART_MSR_CTS)) { > +#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW)) > + printk("CTS tx stop..."); > +#endif > + info->port.tty->hw_stopped = 1; > + info->IER &= ~UART_IER_THRI; > + serial_out(info, UART_IER, info->IER); > + } > + } > + } > +} > +#endif > + > +/* > + * This is the serial driver's interrupt routine for a single port > + */ > +/* static void rs_360_interrupt(void *dev_id) */ /* until and if we start servicing irqs here */ > +static void rs_360_interrupt(int vec, void *dev_id) > +{ > + u_char events; > + int idx; > + ser_info_t *info; > + volatile struct smc_regs *smcp; > + volatile struct scc_regs *sccp; > + > + info = dev_id; > + > + idx = PORT_NUM(info->state->smc_scc_num); > + if (info->state->smc_scc_num & NUM_IS_SCC) { > + sccp = &pquicc->scc_regs[idx]; > + events = sccp->scc_scce; > + if (events & SCCM_RX) > + receive_chars(info); > + if (events & SCCM_TX) > + transmit_chars(info); > + sccp->scc_scce = events; > + } else { > + smcp = &pquicc->smc_regs[idx]; > + events = smcp->smc_smce; > + if (events & SMCM_BRKE) > + receive_break(info); > + if (events & SMCM_RX) > + receive_chars(info); > + if (events & SMCM_TX) > + transmit_chars(info); > + smcp->smc_smce = events; > + } > + > +#ifdef SERIAL_DEBUG_INTR > + printk("rs_interrupt_single(%d, %x)...", > + info->state->smc_scc_num, events); > +#endif > +#ifdef modem_control > + check_modem_status(info); > +#endif > + info->last_active = jiffies; > +#ifdef SERIAL_DEBUG_INTR > + printk("end.\n"); > +#endif > +} > + > + > +/* > + * ------------------------------------------------------------------- > + * Here ends the serial interrupt routines. > + * ------------------------------------------------------------------- > + */ > + > + > +static void do_softint(void *private_) > +{ > + ser_info_t *info = (ser_info_t *) private_; > + struct tty_struct *tty; > + > + tty = info->port.tty; > + if (!tty) > + return; > + > + if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) > + tty_wakeup(tty); > +} > + > + > +/* > + * This routine is called from the scheduler tqueue when the interrupt > + * routine has signalled that a hangup has occurred. The path of > + * hangup processing is: > + * > + * serial interrupt routine -> (scheduler tqueue) -> > + * do_serial_hangup() -> tty->hangup() -> rs_hangup() > + * > + */ > +static void do_serial_hangup(void *private_) > +{ > + struct async_struct *info = (struct async_struct *) private_; > + struct tty_struct *tty; > + > + tty = info->port.tty; > + if (!tty) > + return; > + > + tty_hangup(tty); > +} > + > + > +static int startup(ser_info_t *info) > +{ > + unsigned long flags; > + int retval=0; > + int idx; > + /*struct serial_state *state = info->state;*/ > + volatile struct smc_regs *smcp; > + volatile struct scc_regs *sccp; > + volatile struct smc_uart_pram *up; > + volatile struct uart_pram *scup; > + > + > + local_irq_save(flags); > + > + if (info->flags & ASYNC_INITIALIZED) { > + goto errout; > + } > + > +#ifdef maybe > + if (!state->port || !state->type) { > + if (info->port.tty) > + set_bit(TTY_IO_ERROR, &info->port.tty->flags); > + goto errout; > + } > +#endif > + > +#ifdef SERIAL_DEBUG_OPEN > + printk("starting up ttys%d (irq %d)...", info->line, state->irq); > +#endif > + > + > +#ifdef modem_control > + info->MCR = 0; > + if (info->port.tty->termios->c_cflag & CBAUD) > + info->MCR = UART_MCR_DTR | UART_MCR_RTS; > +#endif > + > + if (info->port.tty) > + clear_bit(TTY_IO_ERROR, &info->port.tty->flags); > + > + /* > + * and set the speed of the serial port > + */ > + change_speed(info); > + > + idx = PORT_NUM(info->state->smc_scc_num); > + if (info->state->smc_scc_num & NUM_IS_SCC) { > + sccp = &pquicc->scc_regs[idx]; > + scup = &pquicc->pram[info->state->port].scc.pscc.u; > + > + scup->mrblr = RX_BUF_SIZE; > + scup->max_idl = RX_BUF_SIZE; > + > + sccp->scc_sccm |= (UART_SCCM_TX | UART_SCCM_RX); > + sccp->scc_gsmr.w.low |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); > + > + } else { > + smcp = &pquicc->smc_regs[idx]; > + > + /* Enable interrupts and I/O. > + */ > + smcp->smc_smcm |= (SMCM_RX | SMCM_TX); > + smcp->smc_smcmr |= (SMCMR_REN | SMCMR_TEN); > + > + /* We can tune the buffer length and idle characters > + * to take advantage of the entire incoming buffer size. > + * If mrblr is something other than 1, maxidl has to be > + * non-zero or we never get an interrupt. The maxidl > + * is the number of character times we wait after reception > + * of the last character before we decide no more characters > + * are coming. > + */ > + /* up = (smc_uart_t *)&pquicc->cp_dparam[state->port]; */ > + /* holy unionized structures, Batman: */ > + up = &pquicc->pram[info->state->port].scc.pothers.idma_smc.psmc.u; > + > + up->mrblr = RX_BUF_SIZE; > + up->max_idl = RX_BUF_SIZE; > + > + up->brkcr = 1; /* number of break chars */ > + } > + > + info->flags |= ASYNC_INITIALIZED; > + local_irq_restore(flags); > + return 0; > + > +errout: > + local_irq_restore(flags); > + return retval; > +} > + > +/* > + * This routine will shutdown a serial port; interrupts are disabled, and > + * DTR is dropped if the hangup on close termio flag is on. > + */ > +static void shutdown(ser_info_t *info) > +{ > + unsigned long flags; > + struct serial_state *state; > + int idx; > + volatile struct smc_regs *smcp; > + volatile struct scc_regs *sccp; > + > + if (!(info->flags & ASYNC_INITIALIZED)) > + return; > + > + state = info->state; > + > +#ifdef SERIAL_DEBUG_OPEN > + printk("Shutting down serial port %d (irq %d)....", info->line, > + state->irq); > +#endif > + > + local_irq_save(flags); > + > + idx = PORT_NUM(state->smc_scc_num); > + if (state->smc_scc_num & NUM_IS_SCC) { > + sccp = &pquicc->scc_regs[idx]; > + sccp->scc_gsmr.w.low &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); > +#ifdef CONFIG_SERIAL_CONSOLE > + /* We can't disable the transmitter if this is the > + * system console. > + */ > + if ((state - rs_table) != CONFIG_SERIAL_CONSOLE_PORT) > +#endif > + sccp->scc_sccm &= ~(UART_SCCM_TX | UART_SCCM_RX); > + } else { > + smcp = &pquicc->smc_regs[idx]; > + > + /* Disable interrupts and I/O. > + */ > + smcp->smc_smcm &= ~(SMCM_RX | SMCM_TX); > +#ifdef CONFIG_SERIAL_CONSOLE > + /* We can't disable the transmitter if this is the > + * system console. > + */ > + if ((state - rs_table) != CONFIG_SERIAL_CONSOLE_PORT) > +#endif > + smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN); > + } > + > + if (info->port.tty) > + set_bit(TTY_IO_ERROR, &info->port.tty->flags); > + > + info->flags &= ~ASYNC_INITIALIZED; > + local_irq_restore(flags); > +} > + > +/* > + * This routine is called to set the UART divisor registers to match > + * the specified baud rate for a serial port. > + */ > +static void change_speed(ser_info_t *info) > +{ > + int baud_rate; > + unsigned cflag, cval, scval, prev_mode; > + int i, bits, sbits, idx; > + unsigned long flags; > + struct serial_state *state; > + volatile struct smc_regs *smcp; > + volatile struct scc_regs *sccp; > + > + if (!info->port.tty || !info->port.tty->termios) > + return; > + cflag = info->port.tty->termios->c_cflag; > + > + state = info->state; > + > + /* Character length programmed into the mode register is the > + * sum of: 1 start bit, number of data bits, 0 or 1 parity bit, > + * 1 or 2 stop bits, minus 1. > + * The value 'bits' counts this for us. > + */ > + cval = 0; > + scval = 0; > + > + /* byte size and parity */ > + switch (cflag & CSIZE) { > + case CS5: bits = 5; break; > + case CS6: bits = 6; break; > + case CS7: bits = 7; break; > + case CS8: bits = 8; break; > + /* Never happens, but GCC is too dumb to figure it out */ > + default: bits = 8; break; > + } > + sbits = bits - 5; > + > + if (cflag & CSTOPB) { > + cval |= SMCMR_SL; /* Two stops */ > + scval |= SCU_PMSR_SL; > + bits++; > + } > + if (cflag & PARENB) { > + cval |= SMCMR_PEN; > + scval |= SCU_PMSR_PEN; > + bits++; > + } > + if (!(cflag & PARODD)) { > + cval |= SMCMR_PM_EVEN; > + scval |= (SCU_PMSR_REVP | SCU_PMSR_TEVP); > + } > + > + /* Determine divisor based on baud rate */ > + i = cflag & CBAUD; > + if (i >= (sizeof(baud_table)/sizeof(int))) > + baud_rate = 9600; > + else > + baud_rate = baud_table[i]; > + > + info->timeout = (TX_BUF_SIZE*HZ*bits); > + info->timeout += HZ/50; /* Add .02 seconds of slop */ > + > +#ifdef modem_control > + /* CTS flow control flag and modem status interrupts */ > + info->IER &= ~UART_IER_MSI; > + if (info->flags & ASYNC_HARDPPS_CD) > + info->IER |= UART_IER_MSI; > + if (cflag & CRTSCTS) { > + info->flags |= ASYNC_CTS_FLOW; > + info->IER |= UART_IER_MSI; > + } else > + info->flags &= ~ASYNC_CTS_FLOW; > + if (cflag & CLOCAL) > + info->flags &= ~ASYNC_CHECK_CD; > + else { > + info->flags |= ASYNC_CHECK_CD; > + info->IER |= UART_IER_MSI; > + } > + serial_out(info, UART_IER, info->IER); > +#endif > + > + /* > + * Set up parity check flag > + */ > + info->read_status_mask = (BD_SC_EMPTY | BD_SC_OV); > + if (I_INPCK(info->port.tty)) > + info->read_status_mask |= BD_SC_FR | BD_SC_PR; > + if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) > + info->read_status_mask |= BD_SC_BR; > + > + /* > + * Characters to ignore > + */ > + info->ignore_status_mask = 0; > + if (I_IGNPAR(info->port.tty)) > + info->ignore_status_mask |= BD_SC_PR | BD_SC_FR; > + if (I_IGNBRK(info->port.tty)) { > + info->ignore_status_mask |= BD_SC_BR; > + /* > + * If we're ignore parity and break indicators, ignore > + * overruns too. (For real raw support). > + */ > + if (I_IGNPAR(info->port.tty)) > + info->ignore_status_mask |= BD_SC_OV; > + } > + /* > + * !!! ignore all characters if CREAD is not set > + */ > + if ((cflag & CREAD) == 0) > + info->read_status_mask &= ~BD_SC_EMPTY; > + local_irq_save(flags); > + > + /* Start bit has not been added (so don't, because we would just > + * subtract it later), and we need to add one for the number of > + * stops bits (there is always at least one). > + */ > + bits++; > + idx = PORT_NUM(state->smc_scc_num); > + if (state->smc_scc_num & NUM_IS_SCC) { > + sccp = &pquicc->scc_regs[idx]; > + sccp->scc_psmr = (sbits << 12) | scval; > + } else { > + smcp = &pquicc->smc_regs[idx]; > + > + /* Set the mode register. We want to keep a copy of the > + * enables, because we want to put them back if they were > + * present. > + */ > + prev_mode = smcp->smc_smcmr; > + smcp->smc_smcmr = smcr_mk_clen(bits) | cval | SMCMR_SM_UART; > + smcp->smc_smcmr |= (prev_mode & (SMCMR_REN | SMCMR_TEN)); > + } > + > + m360_cpm_setbrg((state - rs_table), baud_rate); > + > + local_irq_restore(flags); > +} > + > +static void rs_360_put_char(struct tty_struct *tty, unsigned char ch) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + volatile QUICC_BD *bdp; > + > + if (serial_paranoia_check(info, tty->name, "rs_put_char")) > + return 0; > + > + if (!tty) > + return 0; > + > + bdp = info->tx_cur; > + while (bdp->status & BD_SC_READY); > + > + /* *((char *)__va(bdp->buf)) = ch; */ > + *((char *)bdp->buf) = ch; > + bdp->length = 1; > + bdp->status |= BD_SC_READY; > + > + /* Get next BD. > + */ > + if (bdp->status & BD_SC_WRAP) > + bdp = info->tx_bd_base; > + else > + bdp++; > + > + info->tx_cur = (QUICC_BD *)bdp; > + return 1; > + > +} > + > +static int rs_360_write(struct tty_struct * tty, > + const unsigned char *buf, int count) > +{ > + int c, ret = 0; > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + volatile QUICC_BD *bdp; > + > +#ifdef CONFIG_KGDB > + /* Try to let stub handle output. Returns true if it did. */ > + if (kgdb_output_string(buf, count)) > + return ret; > +#endif > + > + if (serial_paranoia_check(info, tty->name, "rs_write")) > + return 0; > + > + if (!tty) > + return 0; > + > + bdp = info->tx_cur; > + > + while (1) { > + c = min(count, TX_BUF_SIZE); > + > + if (c <= 0) > + break; > + > + if (bdp->status & BD_SC_READY) { > + info->flags |= TX_WAKEUP; > + break; > + } > + > + /* memcpy(__va(bdp->buf), buf, c); */ > + memcpy((void *)bdp->buf, buf, c); > + > + bdp->length = c; > + bdp->status |= BD_SC_READY; > + > + buf += c; > + count -= c; > + ret += c; > + > + /* Get next BD. > + */ > + if (bdp->status & BD_SC_WRAP) > + bdp = info->tx_bd_base; > + else > + bdp++; > + info->tx_cur = (QUICC_BD *)bdp; > + } > + return ret; > +} > + > +static int rs_360_write_room(struct tty_struct *tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + int ret; > + > + if (serial_paranoia_check(info, tty->name, "rs_write_room")) > + return 0; > + > + if ((info->tx_cur->status & BD_SC_READY) == 0) { > + info->flags &= ~TX_WAKEUP; > + ret = TX_BUF_SIZE; > + } > + else { > + info->flags |= TX_WAKEUP; > + ret = 0; > + } > + return ret; > +} > + > +/* I could track this with transmit counters....maybe later. > +*/ > +static int rs_360_chars_in_buffer(struct tty_struct *tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + > + if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer")) > + return 0; > + return 0; > +} > + > +static void rs_360_flush_buffer(struct tty_struct *tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + > + if (serial_paranoia_check(info, tty->name, "rs_flush_buffer")) > + return; > + > + /* There is nothing to "flush", whatever we gave the CPM > + * is on its way out. > + */ > + tty_wakeup(tty); > + info->flags &= ~TX_WAKEUP; > +} > + > +/* > + * This function is used to send a high-priority XON/XOFF character to > + * the device > + */ > +static void rs_360_send_xchar(struct tty_struct *tty, char ch) > +{ > + volatile QUICC_BD *bdp; > + > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + > + if (serial_paranoia_check(info, tty->name, "rs_send_char")) > + return; > + > + bdp = info->tx_cur; > + while (bdp->status & BD_SC_READY); > + > + /* *((char *)__va(bdp->buf)) = ch; */ > + *((char *)bdp->buf) = ch; > + bdp->length = 1; > + bdp->status |= BD_SC_READY; > + > + /* Get next BD. > + */ > + if (bdp->status & BD_SC_WRAP) > + bdp = info->tx_bd_base; > + else > + bdp++; > + > + info->tx_cur = (QUICC_BD *)bdp; > +} > + > +/* > + * ------------------------------------------------------------ > + * rs_throttle() > + * > + * This routine is called by the upper-layer tty layer to signal that > + * incoming characters should be throttled. > + * ------------------------------------------------------------ > + */ > +static void rs_360_throttle(struct tty_struct * tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > +#ifdef SERIAL_DEBUG_THROTTLE > + char buf[64]; > + > + printk("throttle %s: %d....\n", _tty_name(tty, buf), > + tty->ldisc.chars_in_buffer(tty)); > +#endif > + > + if (serial_paranoia_check(info, tty->name, "rs_throttle")) > + return; > + > + if (I_IXOFF(tty)) > + rs_360_send_xchar(tty, STOP_CHAR(tty)); > + > +#ifdef modem_control > + if (tty->termios->c_cflag & CRTSCTS) > + info->MCR &= ~UART_MCR_RTS; > + > + local_irq_disable(); > + serial_out(info, UART_MCR, info->MCR); > + local_irq_enable(); > +#endif > +} > + > +static void rs_360_unthrottle(struct tty_struct * tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > +#ifdef SERIAL_DEBUG_THROTTLE > + char buf[64]; > + > + printk("unthrottle %s: %d....\n", _tty_name(tty, buf), > + tty->ldisc.chars_in_buffer(tty)); > +#endif > + > + if (serial_paranoia_check(info, tty->name, "rs_unthrottle")) > + return; > + > + if (I_IXOFF(tty)) { > + if (info->x_char) > + info->x_char = 0; > + else > + rs_360_send_xchar(tty, START_CHAR(tty)); > + } > +#ifdef modem_control > + if (tty->termios->c_cflag & CRTSCTS) > + info->MCR |= UART_MCR_RTS; > + local_irq_disable(); > + serial_out(info, UART_MCR, info->MCR); > + local_irq_enable(); > +#endif > +} > + > +/* > + * ------------------------------------------------------------ > + * rs_ioctl() and friends > + * ------------------------------------------------------------ > + */ > + > +#ifdef maybe > +/* > + * get_lsr_info - get line status register info > + * > + * Purpose: Let user call ioctl() to get info when the UART physically > + * is emptied. On bus types like RS485, the transmitter must > + * release the bus after transmitting. This must be done when > + * the transmit shift register is empty, not be done when the > + * transmit holding register is empty. This functionality > + * allows an RS485 driver to be written in user space. > + */ > +static int get_lsr_info(struct async_struct * info, unsigned int *value) > +{ > + unsigned char status; > + unsigned int result; > + > + local_irq_disable(); > + status = serial_in(info, UART_LSR); > + local_irq_enable(); > + result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); > + return put_user(result,value); > +} > +#endif > + > +static int rs_360_tiocmget(struct tty_struct *tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + unsigned int result = 0; > +#ifdef modem_control > + unsigned char control, status; > + > + if (serial_paranoia_check(info, tty->name, __func__)) > + return -ENODEV; > + > + if (tty->flags & (1 << TTY_IO_ERROR)) > + return -EIO; > + > + control = info->MCR; > + local_irq_disable(); > + status = serial_in(info, UART_MSR); > + local_irq_enable(); > + result = ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) > + | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) > +#ifdef TIOCM_OUT1 > + | ((control & UART_MCR_OUT1) ? TIOCM_OUT1 : 0) > + | ((control & UART_MCR_OUT2) ? TIOCM_OUT2 : 0) > +#endif > + | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) > + | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) > + | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) > + | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); > +#endif > + return result; > +} > + > +static int rs_360_tiocmset(struct tty_struct *tty, > + unsigned int set, unsigned int clear) > +{ > +#ifdef modem_control > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + unsigned int arg; > + > + if (serial_paranoia_check(info, tty->name, __func__)) > + return -ENODEV; > + > + if (tty->flags & (1 << TTY_IO_ERROR)) > + return -EIO; > + /* FIXME: locking on info->mcr */ > + if (set & TIOCM_RTS) > + info->mcr |= UART_MCR_RTS; > + if (set & TIOCM_DTR) > + info->mcr |= UART_MCR_DTR; > + if (clear & TIOCM_RTS) > + info->MCR &= ~UART_MCR_RTS; > + if (clear & TIOCM_DTR) > + info->MCR &= ~UART_MCR_DTR; > + > +#ifdef TIOCM_OUT1 > + if (set & TIOCM_OUT1) > + info->MCR |= UART_MCR_OUT1; > + if (set & TIOCM_OUT2) > + info->MCR |= UART_MCR_OUT2; > + if (clear & TIOCM_OUT1) > + info->MCR &= ~UART_MCR_OUT1; > + if (clear & TIOCM_OUT2) > + info->MCR &= ~UART_MCR_OUT2; > +#endif > + > + local_irq_disable(); > + serial_out(info, UART_MCR, info->MCR); > + local_irq_enable(); > +#endif > + return 0; > +} > + > +/* Sending a break is a two step process on the SMC/SCC. It is accomplished > + * by sending a STOP TRANSMIT command followed by a RESTART TRANSMIT > + * command. We take advantage of the begin/end functions to make this > + * happen. > + */ > +static ushort smc_chan_map[] = { > + CPM_CR_CH_SMC1, > + CPM_CR_CH_SMC2 > +}; > + > +static ushort scc_chan_map[] = { > + CPM_CR_CH_SCC1, > + CPM_CR_CH_SCC2, > + CPM_CR_CH_SCC3, > + CPM_CR_CH_SCC4 > +}; > + > +static void begin_break(ser_info_t *info) > +{ > + volatile QUICC *cp; > + ushort chan; > + int idx; > + > + cp = pquicc; > + > + idx = PORT_NUM(info->state->smc_scc_num); > + if (info->state->smc_scc_num & NUM_IS_SCC) > + chan = scc_chan_map[idx]; > + else > + chan = smc_chan_map[idx]; > + > + cp->cp_cr = mk_cr_cmd(chan, CPM_CR_STOP_TX) | CPM_CR_FLG; > + while (cp->cp_cr & CPM_CR_FLG); > +} > + > +static void end_break(ser_info_t *info) > +{ > + volatile QUICC *cp; > + ushort chan; > + int idx; > + > + cp = pquicc; > + > + idx = PORT_NUM(info->state->smc_scc_num); > + if (info->state->smc_scc_num & NUM_IS_SCC) > + chan = scc_chan_map[idx]; > + else > + chan = smc_chan_map[idx]; > + > + cp->cp_cr = mk_cr_cmd(chan, CPM_CR_RESTART_TX) | CPM_CR_FLG; > + while (cp->cp_cr & CPM_CR_FLG); > +} > + > +/* > + * This routine sends a break character out the serial port. > + */ > +static void send_break(ser_info_t *info, unsigned int duration) > +{ > +#ifdef SERIAL_DEBUG_SEND_BREAK > + printk("rs_send_break(%d) jiff=%lu...", duration, jiffies); > +#endif > + begin_break(info); > + msleep_interruptible(duration); > + end_break(info); > +#ifdef SERIAL_DEBUG_SEND_BREAK > + printk("done jiffies=%lu\n", jiffies); > +#endif > +} > + > + > +/* > + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) > + * Return: write counters to the user passed counter struct > + * NB: both 1->0 and 0->1 transitions are counted except for > + * RI where only 0->1 is counted. > + */ > +static int rs_360_get_icount(struct tty_struct *tty, > + struct serial_icounter_struct *icount) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + struct async_icount cnow; > + > + local_irq_disable(); > + cnow = info->state->icount; > + local_irq_enable(); > + > + icount->cts = cnow.cts; > + icount->dsr = cnow.dsr; > + icount->rng = cnow.rng; > + icount->dcd = cnow.dcd; > + > + return 0; > +} > + > +static int rs_360_ioctl(struct tty_struct *tty, > + unsigned int cmd, unsigned long arg) > +{ > + int error; > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + int retval; > + struct async_icount cnow; > + /* struct async_icount_24 cnow;*/ /* kernel counter temps */ > + struct serial_icounter_struct *p_cuser; /* user space */ > + > + if (serial_paranoia_check(info, tty->name, "rs_ioctl")) > + return -ENODEV; > + > + if (cmd != TIOCMIWAIT) { > + if (tty->flags & (1 << TTY_IO_ERROR)) > + return -EIO; > + } > + > + switch (cmd) { > + case TCSBRK: /* SVID version: non-zero arg --> no break */ > + retval = tty_check_change(tty); > + if (retval) > + return retval; > + tty_wait_until_sent(tty, 0); > + if (signal_pending(current)) > + return -EINTR; > + if (!arg) { > + send_break(info, 250); /* 1/4 second */ > + if (signal_pending(current)) > + return -EINTR; > + } > + return 0; > + case TCSBRKP: /* support for POSIX tcsendbreak() */ > + retval = tty_check_change(tty); > + if (retval) > + return retval; > + tty_wait_until_sent(tty, 0); > + if (signal_pending(current)) > + return -EINTR; > + send_break(info, arg ? arg*100 : 250); > + if (signal_pending(current)) > + return -EINTR; > + return 0; > + case TIOCSBRK: > + retval = tty_check_change(tty); > + if (retval) > + return retval; > + tty_wait_until_sent(tty, 0); > + begin_break(info); > + return 0; > + case TIOCCBRK: > + retval = tty_check_change(tty); > + if (retval) > + return retval; > + end_break(info); > + return 0; > +#ifdef maybe > + case TIOCSERGETLSR: /* Get line status register */ > + return get_lsr_info(info, (unsigned int *) arg); > +#endif > + /* > + * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change > + * - mask passed in arg for lines of interest > + * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) > + * Caller should use TIOCGICOUNT to see which one it was > + */ > + case TIOCMIWAIT: > +#ifdef modem_control > + local_irq_disable(); > + /* note the counters on entry */ > + cprev = info->state->icount; > + local_irq_enable(); > + while (1) { > + interruptible_sleep_on(&info->delta_msr_wait); > + /* see if a signal did it */ > + if (signal_pending(current)) > + return -ERESTARTSYS; > + local_irq_disable(); > + cnow = info->state->icount; /* atomic copy */ > + local_irq_enable(); > + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && > + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) > + return -EIO; /* no change => error */ > + if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || > + ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || > + ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || > + ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { > + return 0; > + } > + cprev = cnow; > + } > + /* NOTREACHED */ > +#else > + return 0; > +#endif > + > + > + default: > + return -ENOIOCTLCMD; > + } > + return 0; > +} > + > +/* FIX UP modem control here someday...... > +*/ > +static void rs_360_set_termios(struct tty_struct *tty, struct ktermios *old_termios) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + > + change_speed(info); > + > +#ifdef modem_control > + /* Handle transition to B0 status */ > + if ((old_termios->c_cflag & CBAUD) && > + !(tty->termios->c_cflag & CBAUD)) { > + info->MCR &= ~(UART_MCR_DTR|UART_MCR_RTS); > + local_irq_disable(); > + serial_out(info, UART_MCR, info->MCR); > + local_irq_enable(); > + } > + > + /* Handle transition away from B0 status */ > + if (!(old_termios->c_cflag & CBAUD) && > + (tty->termios->c_cflag & CBAUD)) { > + info->MCR |= UART_MCR_DTR; > + if (!tty->hw_stopped || > + !(tty->termios->c_cflag & CRTSCTS)) { > + info->MCR |= UART_MCR_RTS; > + } > + local_irq_disable(); > + serial_out(info, UART_MCR, info->MCR); > + local_irq_enable(); > + } > + > + /* Handle turning off CRTSCTS */ > + if ((old_termios->c_cflag & CRTSCTS) && > + !(tty->termios->c_cflag & CRTSCTS)) { > + tty->hw_stopped = 0; > + rs_360_start(tty); > + } > +#endif > + > +#if 0 > + /* > + * No need to wake up processes in open wait, since they > + * sample the CLOCAL flag once, and don't recheck it. > + * XXX It's not clear whether the current behavior is correct > + * or not. Hence, this may change..... > + */ > + if (!(old_termios->c_cflag & CLOCAL) && > + (tty->termios->c_cflag & CLOCAL)) > + wake_up_interruptible(&info->open_wait); > +#endif > +} > + > +/* > + * ------------------------------------------------------------ > + * rs_close() > + * > + * This routine is called when the serial port gets closed. First, we > + * wait for the last remaining data to be sent. Then, we unlink its > + * async structure from the interrupt chain if necessary, and we free > + * that IRQ if nothing is left in the chain. > + * ------------------------------------------------------------ > + */ > +static void rs_360_close(struct tty_struct *tty, struct file * filp) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + /* struct async_state *state; */ > + struct serial_state *state; > + unsigned long flags; > + int idx; > + volatile struct smc_regs *smcp; > + volatile struct scc_regs *sccp; > + > + if (!info || serial_paranoia_check(info, tty->name, "rs_close")) > + return; > + > + state = info->state; > + > + local_irq_save(flags); > + > + if (tty_hung_up_p(filp)) { > + DBG_CNT("before DEC-hung"); > + local_irq_restore(flags); > + return; > + } > + > +#ifdef SERIAL_DEBUG_OPEN > + printk("rs_close ttys%d, count = %d\n", info->line, state->count); > +#endif > + if ((tty->count == 1) && (state->count != 1)) { > + /* > + * Uh, oh. tty->count is 1, which means that the tty > + * structure will be freed. state->count should always > + * be one in these conditions. If it's greater than > + * one, we've got real problems, since it means the > + * serial port won't be shutdown. > + */ > + printk("rs_close: bad serial port count; tty->count is 1, " > + "state->count is %d\n", state->count); > + state->count = 1; > + } > + if (--state->count < 0) { > + printk("rs_close: bad serial port count for ttys%d: %d\n", > + info->line, state->count); > + state->count = 0; > + } > + if (state->count) { > + DBG_CNT("before DEC-2"); > + local_irq_restore(flags); > + return; > + } > + info->flags |= ASYNC_CLOSING; > + /* > + * Now we wait for the transmit buffer to clear; and we notify > + * the line discipline to only process XON/XOFF characters. > + */ > + tty->closing = 1; > + if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) > + tty_wait_until_sent(tty, info->closing_wait); > + /* > + * At this point we stop accepting input. To do this, we > + * disable the receive line status interrupts, and tell the > + * interrupt driver to stop checking the data ready bit in the > + * line status register. > + */ > + info->read_status_mask &= ~BD_SC_EMPTY; > + if (info->flags & ASYNC_INITIALIZED) { > + > + idx = PORT_NUM(info->state->smc_scc_num); > + if (info->state->smc_scc_num & NUM_IS_SCC) { > + sccp = &pquicc->scc_regs[idx]; > + sccp->scc_sccm &= ~UART_SCCM_RX; > + sccp->scc_gsmr.w.low &= ~SCC_GSMRL_ENR; > + } else { > + smcp = &pquicc->smc_regs[idx]; > + smcp->smc_smcm &= ~SMCM_RX; > + smcp->smc_smcmr &= ~SMCMR_REN; > + } > + /* > + * Before we drop DTR, make sure the UART transmitter > + * has completely drained; this is especially > + * important if there is a transmit FIFO! > + */ > + rs_360_wait_until_sent(tty, info->timeout); > + } > + shutdown(info); > + rs_360_flush_buffer(tty); > + tty_ldisc_flush(tty); > + tty->closing = 0; > + info->event = 0; > + info->port.tty = NULL; > + if (info->blocked_open) { > + if (info->close_delay) { > + msleep_interruptible(jiffies_to_msecs(info->close_delay)); > + } > + wake_up_interruptible(&info->open_wait); > + } > + info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); > + wake_up_interruptible(&info->close_wait); > + local_irq_restore(flags); > +} > + > +/* > + * rs_wait_until_sent() --- wait until the transmitter is empty > + */ > +static void rs_360_wait_until_sent(struct tty_struct *tty, int timeout) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + unsigned long orig_jiffies, char_time; > + /*int lsr;*/ > + volatile QUICC_BD *bdp; > + > + if (serial_paranoia_check(info, tty->name, "rs_wait_until_sent")) > + return; > + > +#ifdef maybe > + if (info->state->type == PORT_UNKNOWN) > + return; > +#endif > + > + orig_jiffies = jiffies; > + /* > + * Set the check interval to be 1/5 of the estimated time to > + * send a single character, and make it at least 1. The check > + * interval should also be less than the timeout. > + * > + * Note: we have to use pretty tight timings here to satisfy > + * the NIST-PCTS. > + */ > + char_time = 1; > + if (timeout) > + char_time = min(char_time, (unsigned long)timeout); > +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT > + printk("In rs_wait_until_sent(%d) check=%lu...", timeout, char_time); > + printk("jiff=%lu...", jiffies); > +#endif > + > + /* We go through the loop at least once because we can't tell > + * exactly when the last character exits the shifter. There can > + * be at least two characters waiting to be sent after the buffers > + * are empty. > + */ > + do { > +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT > + printk("lsr = %d (jiff=%lu)...", lsr, jiffies); > +#endif > +/* current->counter = 0; make us low-priority */ > + msleep_interruptible(jiffies_to_msecs(char_time)); > + if (signal_pending(current)) > + break; > + if (timeout && (time_after(jiffies, orig_jiffies + timeout))) > + break; > + /* The 'tx_cur' is really the next buffer to send. We > + * have to back up to the previous BD and wait for it > + * to go. This isn't perfect, because all this indicates > + * is the buffer is available. There are still characters > + * in the CPM FIFO. > + */ > + bdp = info->tx_cur; > + if (bdp == info->tx_bd_base) > + bdp += (TX_NUM_FIFO-1); > + else > + bdp--; > + } while (bdp->status & BD_SC_READY); > + current->state = TASK_RUNNING; > +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT > + printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); > +#endif > +} > + > +/* > + * rs_hangup() --- called by tty_hangup() when a hangup is signaled. > + */ > +static void rs_360_hangup(struct tty_struct *tty) > +{ > + ser_info_t *info = (ser_info_t *)tty->driver_data; > + struct serial_state *state = info->state; > + > + if (serial_paranoia_check(info, tty->name, "rs_hangup")) > + return; > + > + state = info->state; > + > + rs_360_flush_buffer(tty); > + shutdown(info); > + info->event = 0; > + state->count = 0; > + info->flags &= ~ASYNC_NORMAL_ACTIVE; > + info->port.tty = NULL; > + wake_up_interruptible(&info->open_wait); > +} > + > +/* > + * ------------------------------------------------------------ > + * rs_open() and friends > + * ------------------------------------------------------------ > + */ > +static int block_til_ready(struct tty_struct *tty, struct file * filp, > + ser_info_t *info) > +{ > +#ifdef DO_THIS_LATER > + DECLARE_WAITQUEUE(wait, current); > +#endif > + struct serial_state *state = info->state; > + int retval; > + int do_clocal = 0; > + > + /* > + * If the device is in the middle of being closed, then block > + * until it's done, and then try again. > + */ > + if (tty_hung_up_p(filp) || > + (info->flags & ASYNC_CLOSING)) { > + if (info->flags & ASYNC_CLOSING) > + interruptible_sleep_on(&info->close_wait); > +#ifdef SERIAL_DO_RESTART > + if (info->flags & ASYNC_HUP_NOTIFY) > + return -EAGAIN; > + else > + return -ERESTARTSYS; > +#else > + return -EAGAIN; > +#endif > + } > + > + /* > + * If non-blocking mode is set, or the port is not enabled, > + * then make the check up front and then exit. > + * If this is an SMC port, we don't have modem control to wait > + * for, so just get out here. > + */ > + if ((filp->f_flags & O_NONBLOCK) || > + (tty->flags & (1 << TTY_IO_ERROR)) || > + !(info->state->smc_scc_num & NUM_IS_SCC)) { > + info->flags |= ASYNC_NORMAL_ACTIVE; > + return 0; > + } > + > + if (tty->termios->c_cflag & CLOCAL) > + do_clocal = 1; > + > + /* > + * Block waiting for the carrier detect and the line to become > + * free (i.e., not in use by the callout). While we are in > + * this loop, state->count is dropped by one, so that > + * rs_close() knows when to free things. We restore it upon > + * exit, either normal or abnormal. > + */ > + retval = 0; > +#ifdef DO_THIS_LATER > + add_wait_queue(&info->open_wait, &wait); > +#ifdef SERIAL_DEBUG_OPEN > + printk("block_til_ready before block: ttys%d, count = %d\n", > + state->line, state->count); > +#endif > + local_irq_disable(); > + if (!tty_hung_up_p(filp)) > + state->count--; > + local_irq_enable(); > + info->blocked_open++; > + while (1) { > + local_irq_disable(); > + if (tty->termios->c_cflag & CBAUD) > + serial_out(info, UART_MCR, > + serial_inp(info, UART_MCR) | > + (UART_MCR_DTR | UART_MCR_RTS)); > + local_irq_enable(); > + set_current_state(TASK_INTERRUPTIBLE); > + if (tty_hung_up_p(filp) || > + !(info->flags & ASYNC_INITIALIZED)) { > +#ifdef SERIAL_DO_RESTART > + if (info->flags & ASYNC_HUP_NOTIFY) > + retval = -EAGAIN; > + else > + retval = -ERESTARTSYS; > +#else > + retval = -EAGAIN; > +#endif > + break; > + } > + if (!(info->flags & ASYNC_CLOSING) && > + (do_clocal || (serial_in(info, UART_MSR) & > + UART_MSR_DCD))) > + break; > + if (signal_pending(current)) { > + retval = -ERESTARTSYS; > + break; > + } > +#ifdef SERIAL_DEBUG_OPEN > + printk("block_til_ready blocking: ttys%d, count = %d\n", > + info->line, state->count); > +#endif > + tty_unlock(); > + schedule(); > + tty_lock(); > + } > + current->state = TASK_RUNNING; > + remove_wait_queue(&info->open_wait, &wait); > + if (!tty_hung_up_p(filp)) > + state->count++; > + info->blocked_open--; > +#ifdef SERIAL_DEBUG_OPEN > + printk("block_til_ready after blocking: ttys%d, count = %d\n", > + info->line, state->count); > +#endif > +#endif /* DO_THIS_LATER */ > + if (retval) > + return retval; > + info->flags |= ASYNC_NORMAL_ACTIVE; > + return 0; > +} > + > +static int get_async_struct(int line, ser_info_t **ret_info) > +{ > + struct serial_state *sstate; > + > + sstate = rs_table + line; > + if (sstate->info) { > + sstate->count++; > + *ret_info = (ser_info_t *)sstate->info; > + return 0; > + } > + else { > + return -ENOMEM; > + } > +} > + > +/* > + * This routine is called whenever a serial port is opened. It > + * enables interrupts for a serial port, linking in its async structure into > + * the IRQ chain. It also performs the serial-specific > + * initialization for the tty structure. > + */ > +static int rs_360_open(struct tty_struct *tty, struct file * filp) > +{ > + ser_info_t *info; > + int retval, line; > + > + line = tty->index; > + if ((line < 0) || (line >= NR_PORTS)) > + return -ENODEV; > + retval = get_async_struct(line, &info); > + if (retval) > + return retval; > + if (serial_paranoia_check(info, tty->name, "rs_open")) > + return -ENODEV; > + > +#ifdef SERIAL_DEBUG_OPEN > + printk("rs_open %s, count = %d\n", tty->name, info->state->count); > +#endif > + tty->driver_data = info; > + info->port.tty = tty; > + > + /* > + * Start up serial port > + */ > + retval = startup(info); > + if (retval) > + return retval; > + > + retval = block_til_ready(tty, filp, info); > + if (retval) { > +#ifdef SERIAL_DEBUG_OPEN > + printk("rs_open returning after block_til_ready with %d\n", > + retval); > +#endif > + return retval; > + } > + > +#ifdef SERIAL_DEBUG_OPEN > + printk("rs_open %s successful...", tty->name); > +#endif > + return 0; > +} > + > +/* > + * /proc fs routines.... > + */ > + > +static inline int line_info(char *buf, struct serial_state *state) > +{ > +#ifdef notdef > + struct async_struct *info = state->info, scr_info; > + char stat_buf[30], control, status; > +#endif > + int ret; > + > + ret = sprintf(buf, "%d: uart:%s port:%X irq:%d", > + state->line, > + (state->smc_scc_num & NUM_IS_SCC) ? "SCC" : "SMC", > + (unsigned int)(state->port), state->irq); > + > + if (!state->port || (state->type == PORT_UNKNOWN)) { > + ret += sprintf(buf+ret, "\n"); > + return ret; > + } > + > +#ifdef notdef > + /* > + * Figure out the current RS-232 lines > + */ > + if (!info) { > + info = &scr_info; /* This is just for serial_{in,out} */ > + > + info->magic = SERIAL_MAGIC; > + info->port = state->port; > + info->flags = state->flags; > + info->quot = 0; > + info->port.tty = NULL; > + } > + local_irq_disable(); > + status = serial_in(info, UART_MSR); > + control = info ? info->MCR : serial_in(info, UART_MCR); > + local_irq_enable(); > + > + stat_buf[0] = 0; > + stat_buf[1] = 0; > + if (control & UART_MCR_RTS) > + strcat(stat_buf, "|RTS"); > + if (status & UART_MSR_CTS) > + strcat(stat_buf, "|CTS"); > + if (control & UART_MCR_DTR) > + strcat(stat_buf, "|DTR"); > + if (status & UART_MSR_DSR) > + strcat(stat_buf, "|DSR"); > + if (status & UART_MSR_DCD) > + strcat(stat_buf, "|CD"); > + if (status & UART_MSR_RI) > + strcat(stat_buf, "|RI"); > + > + if (info->quot) { > + ret += sprintf(buf+ret, " baud:%d", > + state->baud_base / info->quot); > + } > + > + ret += sprintf(buf+ret, " tx:%d rx:%d", > + state->icount.tx, state->icount.rx); > + > + if (state->icount.frame) > + ret += sprintf(buf+ret, " fe:%d", state->icount.frame); > + > + if (state->icount.parity) > + ret += sprintf(buf+ret, " pe:%d", state->icount.parity); > + > + if (state->icount.brk) > + ret += sprintf(buf+ret, " brk:%d", state->icount.brk); > + > + if (state->icount.overrun) > + ret += sprintf(buf+ret, " oe:%d", state->icount.overrun); > + > + /* > + * Last thing is the RS-232 status lines > + */ > + ret += sprintf(buf+ret, " %s\n", stat_buf+1); > +#endif > + return ret; > +} > + > +int rs_360_read_proc(char *page, char **start, off_t off, int count, > + int *eof, void *data) > +{ > + int i, len = 0; > + off_t begin = 0; > + > + len += sprintf(page, "serinfo:1.0 driver:%s\n", serial_version); > + for (i = 0; i < NR_PORTS && len < 4000; i++) { > + len += line_info(page + len, &rs_table[i]); > + if (len+begin > off+count) > + goto done; > + if (len+begin < off) { > + begin += len; > + len = 0; > + } > + } > + *eof = 1; > +done: > + if (off >= len+begin) > + return 0; > + *start = page + (begin-off); > + return ((count < begin+len-off) ? count : begin+len-off); > +} > + > +/* > + * --------------------------------------------------------------------- > + * rs_init() and friends > + * > + * rs_init() is called at boot-time to initialize the serial driver. > + * --------------------------------------------------------------------- > + */ > + > +/* > + * This routine prints out the appropriate serial driver version > + * number, and identifies which options were configured into this > + * driver. > + */ > +static _INLINE_ void show_serial_version(void) > +{ > + printk(KERN_INFO "%s version %s\n", serial_name, serial_version); > +} > + > + > +/* > + * The serial console driver used during boot. Note that these names > + * clash with those found in "serial.c", so we currently can't support > + * the 16xxx uarts and these at the same time. I will fix this to become > + * an indirect function call from tty_io.c (or something). > + */ > + > +#ifdef CONFIG_SERIAL_CONSOLE > + > +/* > + * Print a string to the serial port trying not to disturb any possible > + * real use of the port... > + */ > +static void my_console_write(int idx, const char *s, > + unsigned count) > +{ > + struct serial_state *ser; > + ser_info_t *info; > + unsigned i; > + QUICC_BD *bdp, *bdbase; > + volatile struct smc_uart_pram *up; > + volatile u_char *cp; > + > + ser = rs_table + idx; > + > + > + /* If the port has been initialized for general use, we have > + * to use the buffer descriptors allocated there. Otherwise, > + * we simply use the single buffer allocated. > + */ > + if ((info = (ser_info_t *)ser->info) != NULL) { > + bdp = info->tx_cur; > + bdbase = info->tx_bd_base; > + } > + else { > + /* Pointer to UART in parameter ram. > + */ > + /* up = (smc_uart_t *)&cpmp->cp_dparam[ser->port]; */ > + up = &pquicc->pram[ser->port].scc.pothers.idma_smc.psmc.u; > + > + /* Get the address of the host memory buffer. > + */ > + bdp = bdbase = (QUICC_BD *)((uint)pquicc + (uint)up->tbase); > + } > + > + /* > + * We need to gracefully shut down the transmitter, disable > + * interrupts, then send our bytes out. > + */ > + > + /* > + * Now, do each character. This is not as bad as it looks > + * since this is a holding FIFO and not a transmitting FIFO. > + * We could add the complexity of filling the entire transmit > + * buffer, but we would just wait longer between accesses...... > + */ > + for (i = 0; i < count; i++, s++) { > + /* Wait for transmitter fifo to empty. > + * Ready indicates output is ready, and xmt is doing > + * that, not that it is ready for us to send. > + */ > + while (bdp->status & BD_SC_READY); > + > + /* Send the character out. > + */ > + cp = bdp->buf; > + *cp = *s; > + > + bdp->length = 1; > + bdp->status |= BD_SC_READY; > + > + if (bdp->status & BD_SC_WRAP) > + bdp = bdbase; > + else > + bdp++; > + > + /* if a LF, also do CR... */ > + if (*s == 10) { > + while (bdp->status & BD_SC_READY); > + /* cp = __va(bdp->buf); */ > + cp = bdp->buf; > + *cp = 13; > + bdp->length = 1; > + bdp->status |= BD_SC_READY; > + > + if (bdp->status & BD_SC_WRAP) { > + bdp = bdbase; > + } > + else { > + bdp++; > + } > + } > + } > + > + /* > + * Finally, Wait for transmitter & holding register to empty > + * and restore the IER > + */ > + while (bdp->status & BD_SC_READY); > + > + if (info) > + info->tx_cur = (QUICC_BD *)bdp; > +} > + > +static void serial_console_write(struct console *c, const char *s, > + unsigned count) > +{ > +#ifdef CONFIG_KGDB > + /* Try to let stub handle output. Returns true if it did. */ > + if (kgdb_output_string(s, count)) > + return; > +#endif > + my_console_write(c->index, s, count); > +} > + > + > + > +/*void console_print_68360(const char *p) > +{ > + const char *cp = p; > + int i; > + > + for (i=0;cp[i]!=0;i++); > + > + serial_console_write (p, i); > + > + //Comment this if you want to have a strict interrupt-driven output > + //rs_fair_output(); > + > + return; > +}*/ > + > + > + > + > + > + > +#ifdef CONFIG_XMON > +int > +xmon_360_write(const char *s, unsigned count) > +{ > + my_console_write(0, s, count); > + return(count); > +} > +#endif > + > +#ifdef CONFIG_KGDB > +void > +putDebugChar(char ch) > +{ > + my_console_write(0, &ch, 1); > +} > +#endif > + > +/* > + * Receive character from the serial port. This only works well > + * before the port is initialized for real use. > + */ > +static int my_console_wait_key(int idx, int xmon, char *obuf) > +{ > + struct serial_state *ser; > + u_char c, *cp; > + ser_info_t *info; > + QUICC_BD *bdp; > + volatile struct smc_uart_pram *up; > + int i; > + > + ser = rs_table + idx; > + > + /* Get the address of the host memory buffer. > + * If the port has been initialized for general use, we must > + * use information from the port structure. > + */ > + if ((info = (ser_info_t *)ser->info)) > + bdp = info->rx_cur; > + else > + /* bdp = (QUICC_BD *)&cpmp->cp_dpmem[up->smc_rbase]; */ > + bdp = (QUICC_BD *)((uint)pquicc + (uint)up->tbase); > + > + /* Pointer to UART in parameter ram. > + */ > + /* up = (smc_uart_t *)&cpmp->cp_dparam[ser->port]; */ > + up = &pquicc->pram[info->state->port].scc.pothers.idma_smc.psmc.u; > + > + /* > + * We need to gracefully shut down the receiver, disable > + * interrupts, then read the input. > + * XMON just wants a poll. If no character, return -1, else > + * return the character. > + */ > + if (!xmon) { > + while (bdp->status & BD_SC_EMPTY); > + } > + else { > + if (bdp->status & BD_SC_EMPTY) > + return -1; > + } > + > + cp = (char *)bdp->buf; > + > + if (obuf) { > + i = c = bdp->length; > + while (i-- > 0) > + *obuf++ = *cp++; > + } > + else { > + c = *cp; > + } > + bdp->status |= BD_SC_EMPTY; > + > + if (info) { > + if (bdp->status & BD_SC_WRAP) { > + bdp = info->rx_bd_base; > + } > + else { > + bdp++; > + } > + info->rx_cur = (QUICC_BD *)bdp; > + } > + > + return((int)c); > +} > + > +static int serial_console_wait_key(struct console *co) > +{ > + return(my_console_wait_key(co->index, 0, NULL)); > +} > + > +#ifdef CONFIG_XMON > +int > +xmon_360_read_poll(void) > +{ > + return(my_console_wait_key(0, 1, NULL)); > +} > + > +int > +xmon_360_read_char(void) > +{ > + return(my_console_wait_key(0, 0, NULL)); > +} > +#endif > + > +#ifdef CONFIG_KGDB > +static char kgdb_buf[RX_BUF_SIZE], *kgdp; > +static int kgdb_chars; > + > +unsigned char > +getDebugChar(void) > +{ > + if (kgdb_chars <= 0) { > + kgdb_chars = my_console_wait_key(0, 0, kgdb_buf); > + kgdp = kgdb_buf; > + } > + kgdb_chars--; > + > + return(*kgdp++); > +} > + > +void kgdb_interruptible(int state) > +{ > +} > +void kgdb_map_scc(void) > +{ > + struct serial_state *ser; > + uint mem_addr; > + volatile QUICC_BD *bdp; > + volatile smc_uart_t *up; > + > + cpmp = (cpm360_t *)&(((immap_t *)IMAP_ADDR)->im_cpm); > + > + /* To avoid data cache CPM DMA coherency problems, allocate a > + * buffer in the CPM DPRAM. This will work until the CPM and > + * serial ports are initialized. At that time a memory buffer > + * will be allocated. > + * The port is already initialized from the boot procedure, all > + * we do here is give it a different buffer and make it a FIFO. > + */ > + > + ser = rs_table; > + > + /* Right now, assume we are using SMCs. > + */ > + up = (smc_uart_t *)&cpmp->cp_dparam[ser->port]; > + > + /* Allocate space for an input FIFO, plus a few bytes for output. > + * Allocate bytes to maintain word alignment. > + */ > + mem_addr = (uint)(&cpmp->cp_dpmem[0x1000]); > + > + /* Set the physical address of the host memory buffers in > + * the buffer descriptors. > + */ > + bdp = (QUICC_BD *)&cpmp->cp_dpmem[up->smc_rbase]; > + bdp->buf = mem_addr; > + > + bdp = (QUICC_BD *)&cpmp->cp_dpmem[up->smc_tbase]; > + bdp->buf = mem_addr+RX_BUF_SIZE; > + > + up->smc_mrblr = RX_BUF_SIZE; /* receive buffer length */ > + up->smc_maxidl = RX_BUF_SIZE; > +} > +#endif > + > +static struct tty_struct *serial_console_device(struct console *c, int *index) > +{ > + *index = c->index; > + return serial_driver; > +} > + > + > +struct console sercons = { > + .name = "ttyS", > + .write = serial_console_write, > + .device = serial_console_device, > + .wait_key = serial_console_wait_key, > + .setup = serial_console_setup, > + .flags = CON_PRINTBUFFER, > + .index = CONFIG_SERIAL_CONSOLE_PORT, > +}; > + > + > + > +/* > + * Register console. > + */ > +long console_360_init(long kmem_start, long kmem_end) > +{ > + register_console(&sercons); > + /*register_console (console_print_68360); - 2.0.38 only required a write > + function pointer. */ > + return kmem_start; > +} > + > +#endif > + > +/* Index in baud rate table of the default console baud rate. > +*/ > +static int baud_idx; > + > +static const struct tty_operations rs_360_ops = { > + .owner = THIS_MODULE, > + .open = rs_360_open, > + .close = rs_360_close, > + .write = rs_360_write, > + .put_char = rs_360_put_char, > + .write_room = rs_360_write_room, > + .chars_in_buffer = rs_360_chars_in_buffer, > + .flush_buffer = rs_360_flush_buffer, > + .ioctl = rs_360_ioctl, > + .throttle = rs_360_throttle, > + .unthrottle = rs_360_unthrottle, > + /* .send_xchar = rs_360_send_xchar, */ > + .set_termios = rs_360_set_termios, > + .stop = rs_360_stop, > + .start = rs_360_start, > + .hangup = rs_360_hangup, > + /* .wait_until_sent = rs_360_wait_until_sent, */ > + /* .read_proc = rs_360_read_proc, */ > + .tiocmget = rs_360_tiocmget, > + .tiocmset = rs_360_tiocmset, > + .get_icount = rs_360_get_icount, > +}; > + > +static int __init rs_360_init(void) > +{ > + struct serial_state * state; > + ser_info_t *info; > + void *mem_addr; > + uint dp_addr, iobits; > + int i, j, idx; > + ushort chan; > + QUICC_BD *bdp; > + volatile QUICC *cp; > + volatile struct smc_regs *sp; > + volatile struct smc_uart_pram *up; > + volatile struct scc_regs *scp; > + volatile struct uart_pram *sup; > + /* volatile immap_t *immap; */ > + > + serial_driver = alloc_tty_driver(NR_PORTS); > + if (!serial_driver) > + return -1; > + > + show_serial_version(); > + > + serial_driver->name = "ttyS"; > + serial_driver->major = TTY_MAJOR; > + serial_driver->minor_start = 64; > + serial_driver->type = TTY_DRIVER_TYPE_SERIAL; > + serial_driver->subtype = SERIAL_TYPE_NORMAL; > + serial_driver->init_termios = tty_std_termios; > + serial_driver->init_termios.c_cflag = > + baud_idx | CS8 | CREAD | HUPCL | CLOCAL; > + serial_driver->flags = TTY_DRIVER_REAL_RAW; > + tty_set_operations(serial_driver, &rs_360_ops); > + > + if (tty_register_driver(serial_driver)) > + panic("Couldn't register serial driver\n"); > + > + cp = pquicc; /* Get pointer to Communication Processor */ > + /* immap = (immap_t *)IMAP_ADDR; */ /* and to internal registers */ > + > + > + /* Configure SCC2, SCC3, and SCC4 instead of port A parallel I/O. > + */ > + /* The "standard" configuration through the 860. > + */ > +/* immap->im_ioport.iop_papar |= 0x00fc; */ > +/* immap->im_ioport.iop_padir &= ~0x00fc; */ > +/* immap->im_ioport.iop_paodr &= ~0x00fc; */ > + cp->pio_papar |= 0x00fc; > + cp->pio_padir &= ~0x00fc; > + /* cp->pio_paodr &= ~0x00fc; */ > + > + > + /* Since we don't yet do modem control, connect the port C pins > + * as general purpose I/O. This will assert CTS and CD for the > + * SCC ports. > + */ > + /* FIXME: see 360um p.7-365 and 860um p.34-12 > + * I can't make sense of these bits - mleslie*/ > +/* immap->im_ioport.iop_pcdir |= 0x03c6; */ > +/* immap->im_ioport.iop_pcpar &= ~0x03c6; */ > + > +/* cp->pio_pcdir |= 0x03c6; */ > +/* cp->pio_pcpar &= ~0x03c6; */ > + > + > + > + /* Connect SCC2 and SCC3 to NMSI. Connect BRG3 to SCC2 and > + * BRG4 to SCC3. > + */ > + cp->si_sicr &= ~0x00ffff00; > + cp->si_sicr |= 0x001b1200; > + > +#ifdef CONFIG_PP04 > + /* Frequentis PP04 forced to RS-232 until we know better. > + * Port C 12 and 13 low enables RS-232 on SCC3 and SCC4. > + */ > + immap->im_ioport.iop_pcdir |= 0x000c; > + immap->im_ioport.iop_pcpar &= ~0x000c; > + immap->im_ioport.iop_pcdat &= ~0x000c; > + > + /* This enables the TX driver. > + */ > + cp->cp_pbpar &= ~0x6000; > + cp->cp_pbdat &= ~0x6000; > +#endif > + > + for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) { > + state->magic = SSTATE_MAGIC; > + state->line = i; > + state->type = PORT_UNKNOWN; > + state->custom_divisor = 0; > + state->close_delay = 5*HZ/10; > + state->closing_wait = 30*HZ; > + state->icount.cts = state->icount.dsr = > + state->icount.rng = state->icount.dcd = 0; > + state->icount.rx = state->icount.tx = 0; > + state->icount.frame = state->icount.parity = 0; > + state->icount.overrun = state->icount.brk = 0; > + printk(KERN_INFO "ttyS%d at irq 0x%02x is an %s\n", > + i, (unsigned int)(state->irq), > + (state->smc_scc_num & NUM_IS_SCC) ? "SCC" : "SMC"); > + > +#ifdef CONFIG_SERIAL_CONSOLE > + /* If we just printed the message on the console port, and > + * we are about to initialize it for general use, we have > + * to wait a couple of character times for the CR/NL to > + * make it out of the transmit buffer. > + */ > + if (i == CONFIG_SERIAL_CONSOLE_PORT) > + mdelay(8); > + > + > +/* idx = PORT_NUM(info->state->smc_scc_num); */ > +/* if (info->state->smc_scc_num & NUM_IS_SCC) */ > +/* chan = scc_chan_map[idx]; */ > +/* else */ > +/* chan = smc_chan_map[idx]; */ > + > +/* cp->cp_cr = mk_cr_cmd(chan, CPM_CR_STOP_TX) | CPM_CR_FLG; */ > +/* while (cp->cp_cr & CPM_CR_FLG); */ > + > +#endif > + /* info = kmalloc(sizeof(ser_info_t), GFP_KERNEL); */ > + info = &quicc_ser_info[i]; > + if (info) { > + memset (info, 0, sizeof(ser_info_t)); > + info->magic = SERIAL_MAGIC; > + info->line = i; > + info->flags = state->flags; > + INIT_WORK(&info->tqueue, do_softint, info); > + INIT_WORK(&info->tqueue_hangup, do_serial_hangup, info); > + init_waitqueue_head(&info->open_wait); > + init_waitqueue_head(&info->close_wait); > + info->state = state; > + state->info = (struct async_struct *)info; > + > + /* We need to allocate a transmit and receive buffer > + * descriptors from dual port ram, and a character > + * buffer area from host mem. > + */ > + dp_addr = m360_cpm_dpalloc(sizeof(QUICC_BD) * RX_NUM_FIFO); > + > + /* Allocate space for FIFOs in the host memory. > + * (for now this is from a static array of buffers :( > + */ > + /* mem_addr = m360_cpm_hostalloc(RX_NUM_FIFO * RX_BUF_SIZE); */ > + /* mem_addr = kmalloc (RX_NUM_FIFO * RX_BUF_SIZE, GFP_BUFFER); */ > + mem_addr = &rx_buf_pool[i * RX_NUM_FIFO * RX_BUF_SIZE]; > + > + /* Set the physical address of the host memory > + * buffers in the buffer descriptors, and the > + * virtual address for us to work with. > + */ > + bdp = (QUICC_BD *)((uint)pquicc + dp_addr); > + info->rx_cur = info->rx_bd_base = bdp; > + > + /* initialize rx buffer descriptors */ > + for (j=0; j<(RX_NUM_FIFO-1); j++) { > + bdp->buf = &rx_buf_pool[(i * RX_NUM_FIFO + j ) * RX_BUF_SIZE]; > + bdp->status = BD_SC_EMPTY | BD_SC_INTRPT; > + mem_addr += RX_BUF_SIZE; > + bdp++; > + } > + bdp->buf = &rx_buf_pool[(i * RX_NUM_FIFO + j ) * RX_BUF_SIZE]; > + bdp->status = BD_SC_WRAP | BD_SC_EMPTY | BD_SC_INTRPT; > + > + > + idx = PORT_NUM(info->state->smc_scc_num); > + if (info->state->smc_scc_num & NUM_IS_SCC) { > + > +#if defined (CONFIG_UCQUICC) && 1 > + /* set the transceiver mode to RS232 */ > + sipex_mode_bits &= ~(uint)SIPEX_MODE(idx,0x0f); /* clear current mode */ > + sipex_mode_bits |= (uint)SIPEX_MODE(idx,0x02); > + *(uint *)_periph_base = sipex_mode_bits; > + /* printk ("sipex bits = 0x%08x\n", sipex_mode_bits); */ > +#endif > + } > + > + dp_addr = m360_cpm_dpalloc(sizeof(QUICC_BD) * TX_NUM_FIFO); > + > + /* Allocate space for FIFOs in the host memory. > + */ > + /* mem_addr = m360_cpm_hostalloc(TX_NUM_FIFO * TX_BUF_SIZE); */ > + /* mem_addr = kmalloc (TX_NUM_FIFO * TX_BUF_SIZE, GFP_BUFFER); */ > + mem_addr = &tx_buf_pool[i * TX_NUM_FIFO * TX_BUF_SIZE]; > + > + /* Set the physical address of the host memory > + * buffers in the buffer descriptors, and the > + * virtual address for us to work with. > + */ > + /* bdp = (QUICC_BD *)&cp->cp_dpmem[dp_addr]; */ > + bdp = (QUICC_BD *)((uint)pquicc + dp_addr); > + info->tx_cur = info->tx_bd_base = (QUICC_BD *)bdp; > + > + /* initialize tx buffer descriptors */ > + for (j=0; j<(TX_NUM_FIFO-1); j++) { > + bdp->buf = &tx_buf_pool[(i * TX_NUM_FIFO + j ) * TX_BUF_SIZE]; > + bdp->status = BD_SC_INTRPT; > + mem_addr += TX_BUF_SIZE; > + bdp++; > + } > + bdp->buf = &tx_buf_pool[(i * TX_NUM_FIFO + j ) * TX_BUF_SIZE]; > + bdp->status = (BD_SC_WRAP | BD_SC_INTRPT); > + > + if (info->state->smc_scc_num & NUM_IS_SCC) { > + scp = &pquicc->scc_regs[idx]; > + sup = &pquicc->pram[info->state->port].scc.pscc.u; > + sup->rbase = dp_addr; > + sup->tbase = dp_addr; > + > + /* Set up the uart parameters in the > + * parameter ram. > + */ > + sup->rfcr = SMC_EB; > + sup->tfcr = SMC_EB; > + > + /* Set this to 1 for now, so we get single > + * character interrupts. Using idle character > + * time requires some additional tuning. > + */ > + sup->mrblr = 1; > + sup->max_idl = 0; > + sup->brkcr = 1; > + sup->parec = 0; > + sup->frmer = 0; > + sup->nosec = 0; > + sup->brkec = 0; > + sup->uaddr1 = 0; > + sup->uaddr2 = 0; > + sup->toseq = 0; > + { > + int i; > + for (i=0;i<8;i++) > + sup->cc[i] = 0x8000; > + } > + sup->rccm = 0xc0ff; > + > + /* Send the CPM an initialize command. > + */ > + chan = scc_chan_map[idx]; > + > + /* execute the INIT RX & TX PARAMS command for this channel. */ > + cp->cp_cr = mk_cr_cmd(chan, CPM_CR_INIT_TRX) | CPM_CR_FLG; > + while (cp->cp_cr & CPM_CR_FLG); > + > + /* Set UART mode, 8 bit, no parity, one stop. > + * Enable receive and transmit. > + */ > + scp->scc_gsmr.w.high = 0; > + scp->scc_gsmr.w.low = > + (SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16); > + > + /* Disable all interrupts and clear all pending > + * events. > + */ > + scp->scc_sccm = 0; > + scp->scc_scce = 0xffff; > + scp->scc_dsr = 0x7e7e; > + scp->scc_psmr = 0x3000; > + > + /* If the port is the console, enable Rx and Tx. > + */ > +#ifdef CONFIG_SERIAL_CONSOLE > + if (i == CONFIG_SERIAL_CONSOLE_PORT) > + scp->scc_gsmr.w.low |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); > +#endif > + } > + else { > + /* Configure SMCs Tx/Rx instead of port B > + * parallel I/O. > + */ > + up = &pquicc->pram[info->state->port].scc.pothers.idma_smc.psmc.u; > + up->rbase = dp_addr; > + > + iobits = 0xc0 << (idx * 4); > + cp->pip_pbpar |= iobits; > + cp->pip_pbdir &= ~iobits; > + cp->pip_pbodr &= ~iobits; > + > + > + /* Connect the baud rate generator to the > + * SMC based upon index in rs_table. Also > + * make sure it is connected to NMSI. > + */ > + cp->si_simode &= ~(0xffff << (idx * 16)); > + cp->si_simode |= (i << ((idx * 16) + 12)); > + > + up->tbase = dp_addr; > + > + /* Set up the uart parameters in the > + * parameter ram. > + */ > + up->rfcr = SMC_EB; > + up->tfcr = SMC_EB; > + > + /* Set this to 1 for now, so we get single > + * character interrupts. Using idle character > + * time requires some additional tuning. > + */ > + up->mrblr = 1; > + up->max_idl = 0; > + up->brkcr = 1; > + > + /* Send the CPM an initialize command. > + */ > + chan = smc_chan_map[idx]; > + > + cp->cp_cr = mk_cr_cmd(chan, > + CPM_CR_INIT_TRX) | CPM_CR_FLG; > +#ifdef CONFIG_SERIAL_CONSOLE > + if (i == CONFIG_SERIAL_CONSOLE_PORT) > + printk(""); > +#endif > + while (cp->cp_cr & CPM_CR_FLG); > + > + /* Set UART mode, 8 bit, no parity, one stop. > + * Enable receive and transmit. > + */ > + sp = &cp->smc_regs[idx]; > + sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART; > + > + /* Disable all interrupts and clear all pending > + * events. > + */ > + sp->smc_smcm = 0; > + sp->smc_smce = 0xff; > + > + /* If the port is the console, enable Rx and Tx. > + */ > +#ifdef CONFIG_SERIAL_CONSOLE > + if (i == CONFIG_SERIAL_CONSOLE_PORT) > + sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN; > +#endif > + } > + > + /* Install interrupt handler. > + */ > + /* cpm_install_handler(IRQ_MACHSPEC | state->irq, rs_360_interrupt, info); */ > + /*request_irq(IRQ_MACHSPEC | state->irq, rs_360_interrupt, */ > + request_irq(state->irq, rs_360_interrupt, > + IRQ_FLG_LOCK, "ttyS", (void *)info); > + > + /* Set up the baud rate generator. > + */ > + m360_cpm_setbrg(i, baud_table[baud_idx]); > + > + } > + } > + > + return 0; > +} > +module_init(rs_360_init); > + > +/* This must always be called before the rs_360_init() function, otherwise > + * it blows away the port control information. > + */ > +//static int __init serial_console_setup( struct console *co, char *options) > +int serial_console_setup( struct console *co, char *options) > +{ > + struct serial_state *ser; > + uint mem_addr, dp_addr, bidx, idx, iobits; > + ushort chan; > + QUICC_BD *bdp; > + volatile QUICC *cp; > + volatile struct smc_regs *sp; > + volatile struct scc_regs *scp; > + volatile struct smc_uart_pram *up; > + volatile struct uart_pram *sup; > + > +/* mleslie TODO: > + * add something to the 68k bootloader to store a desired initial console baud rate */ > + > +/* bd_t *bd; */ /* a board info struct used by EPPC-bug */ > +/* bd = (bd_t *)__res; */ > + > + for (bidx = 0; bidx < (sizeof(baud_table) / sizeof(int)); bidx++) > + /* if (bd->bi_baudrate == baud_table[bidx]) */ > + if (CONSOLE_BAUDRATE == baud_table[bidx]) > + break; > + > + /* co->cflag = CREAD|CLOCAL|bidx|CS8; */ > + baud_idx = bidx; > + > + ser = rs_table + CONFIG_SERIAL_CONSOLE_PORT; > + > + cp = pquicc; /* Get pointer to Communication Processor */ > + > + idx = PORT_NUM(ser->smc_scc_num); > + if (ser->smc_scc_num & NUM_IS_SCC) { > + > + /* TODO: need to set up SCC pin assignment etc. here */ > + > + } > + else { > + iobits = 0xc0 << (idx * 4); > + cp->pip_pbpar |= iobits; > + cp->pip_pbdir &= ~iobits; > + cp->pip_pbodr &= ~iobits; > + > + /* Connect the baud rate generator to the > + * SMC based upon index in rs_table. Also > + * make sure it is connected to NMSI. > + */ > + cp->si_simode &= ~(0xffff << (idx * 16)); > + cp->si_simode |= (idx << ((idx * 16) + 12)); > + } > + > + /* When we get here, the CPM has been reset, so we need > + * to configure the port. > + * We need to allocate a transmit and receive buffer descriptor > + * from dual port ram, and a character buffer area from host mem. > + */ > + > + /* Allocate space for two buffer descriptors in the DP ram. > + */ > + dp_addr = m360_cpm_dpalloc(sizeof(QUICC_BD) * CONSOLE_NUM_FIFO); > + > + /* Allocate space for two 2 byte FIFOs in the host memory. > + */ > + /* mem_addr = m360_cpm_hostalloc(8); */ > + mem_addr = (uint)console_fifos; > + > + > + /* Set the physical address of the host memory buffers in > + * the buffer descriptors. > + */ > + /* bdp = (QUICC_BD *)&cp->cp_dpmem[dp_addr]; */ > + bdp = (QUICC_BD *)((uint)pquicc + dp_addr); > + bdp->buf = (char *)mem_addr; > + (bdp+1)->buf = (char *)(mem_addr+4); > + > + /* For the receive, set empty and wrap. > + * For transmit, set wrap. > + */ > + bdp->status = BD_SC_EMPTY | BD_SC_WRAP; > + (bdp+1)->status = BD_SC_WRAP; > + > + /* Set up the uart parameters in the parameter ram. > + */ > + if (ser->smc_scc_num & NUM_IS_SCC) { > + scp = &cp->scc_regs[idx]; > + /* sup = (scc_uart_t *)&cp->cp_dparam[ser->port]; */ > + sup = &pquicc->pram[ser->port].scc.pscc.u; > + > + sup->rbase = dp_addr; > + sup->tbase = dp_addr + sizeof(QUICC_BD); > + > + /* Set up the uart parameters in the > + * parameter ram. > + */ > + sup->rfcr = SMC_EB; > + sup->tfcr = SMC_EB; > + > + /* Set this to 1 for now, so we get single > + * character interrupts. Using idle character > + * time requires some additional tuning. > + */ > + sup->mrblr = 1; > + sup->max_idl = 0; > + sup->brkcr = 1; > + sup->parec = 0; > + sup->frmer = 0; > + sup->nosec = 0; > + sup->brkec = 0; > + sup->uaddr1 = 0; > + sup->uaddr2 = 0; > + sup->toseq = 0; > + { > + int i; > + for (i=0;i<8;i++) > + sup->cc[i] = 0x8000; > + } > + sup->rccm = 0xc0ff; > + > + /* Send the CPM an initialize command. > + */ > + chan = scc_chan_map[idx]; > + > + cp->cp_cr = mk_cr_cmd(chan, CPM_CR_INIT_TRX) | CPM_CR_FLG; > + while (cp->cp_cr & CPM_CR_FLG); > + > + /* Set UART mode, 8 bit, no parity, one stop. > + * Enable receive and transmit. > + */ > + scp->scc_gsmr.w.high = 0; > + scp->scc_gsmr.w.low = > + (SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16); > + > + /* Disable all interrupts and clear all pending > + * events. > + */ > + scp->scc_sccm = 0; > + scp->scc_scce = 0xffff; > + scp->scc_dsr = 0x7e7e; > + scp->scc_psmr = 0x3000; > + > + scp->scc_gsmr.w.low |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); > + > + } > + else { > + /* up = (smc_uart_t *)&cp->cp_dparam[ser->port]; */ > + up = &pquicc->pram[ser->port].scc.pothers.idma_smc.psmc.u; > + > + up->rbase = dp_addr; /* Base of receive buffer desc. */ > + up->tbase = dp_addr+sizeof(QUICC_BD); /* Base of xmt buffer desc. */ > + up->rfcr = SMC_EB; > + up->tfcr = SMC_EB; > + > + /* Set this to 1 for now, so we get single character interrupts. > + */ > + up->mrblr = 1; /* receive buffer length */ > + up->max_idl = 0; /* wait forever for next char */ > + > + /* Send the CPM an initialize command. > + */ > + chan = smc_chan_map[idx]; > + cp->cp_cr = mk_cr_cmd(chan, CPM_CR_INIT_TRX) | CPM_CR_FLG; > + while (cp->cp_cr & CPM_CR_FLG); > + > + /* Set UART mode, 8 bit, no parity, one stop. > + * Enable receive and transmit. > + */ > + sp = &cp->smc_regs[idx]; > + sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART; > + > + /* And finally, enable Rx and Tx. > + */ > + sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN; > + } > + > + /* Set up the baud rate generator. > + */ > + /* m360_cpm_setbrg((ser - rs_table), bd->bi_baudrate); */ > + m360_cpm_setbrg((ser - rs_table), CONSOLE_BAUDRATE); > + > + return 0; > +} > + > +/* > + * Local variables: > + * c-indent-level: 4 > + * c-basic-offset: 4 > + * tab-width: 4 > + * End: > + */ > diff --git a/drivers/staging/serial/Kconfig b/drivers/staging/serial/Kconfig > new file mode 100644 > index 0000000..9489688 > --- /dev/null > +++ b/drivers/staging/serial/Kconfig > @@ -0,0 +1,16 @@ > +config SERIAL_68360_SMC > + bool "68360 SMC uart support" > + depends on M68360 > + help > + This driver supports the SMC serial ports of the Motorola 68360 CPU. > + > +config SERIAL_68360_SCC > + bool "68360 SCC uart support" > + depends on M68360 > + help > + This driver supports the SCC serial ports of the Motorola 68360 CPU. > + > +config SERIAL_68360 > + bool > + depends on SERIAL_68360_SMC || SERIAL_68360_SCC > + default y > diff --git a/drivers/staging/serial/Makefile b/drivers/staging/serial/Makefile > new file mode 100644 > index 0000000..37a6a0b > --- /dev/null > +++ b/drivers/staging/serial/Makefile > @@ -0,0 +1 @@ > +obj-$(CONFIG_SERIAL_68360) += 68360serial.o > diff --git a/drivers/staging/serial/TODO b/drivers/staging/serial/TODO > new file mode 100644 > index 0000000..a19cda8 > --- /dev/null > +++ b/drivers/staging/serial/TODO > @@ -0,0 +1,6 @@ > +These are a few serial drivers that either do not build, or do not work if they > +do build, or if they seem to work, are for obsolete hardware, or are full of > +unfixable races and no one uses them anymore. > + > +If no one steps up to adopt any of these drivers, they will be removed > +in the 3.4 release. > diff --git a/drivers/tty/serial/68360serial.c b/drivers/tty/serial/68360serial.c > deleted file mode 100644 > index 0a3e878..0000000 > --- a/drivers/tty/serial/68360serial.c > +++ /dev/null > @@ -1,2979 +0,0 @@ > -/* > - * UART driver for 68360 CPM SCC or SMC > - * Copyright (c) 2000 D. Jeff Dionne <jeff@uclinux.org>, > - * Copyright (c) 2000 Michael Leslie <mleslie@lineo.ca> > - * Copyright (c) 1997 Dan Malek <dmalek@jlc.net> > - * > - * I used the serial.c driver as the framework for this driver. > - * Give credit to those guys. > - * The original code was written for the MBX860 board. I tried to make > - * it generic, but there may be some assumptions in the structures that > - * have to be fixed later. > - * To save porting time, I did not bother to change any object names > - * that are not accessed outside of this file. > - * It still needs lots of work........When it was easy, I included code > - * to support the SCCs, but this has never been tested, nor is it complete. > - * Only the SCCs support modem control, so that is not complete either. > - * > - * This module exports the following rs232 io functions: > - * > - * int rs_360_init(void); > - */ > - > -#include <linux/module.h> > -#include <linux/errno.h> > -#include <linux/signal.h> > -#include <linux/sched.h> > -#include <linux/timer.h> > -#include <linux/interrupt.h> > -#include <linux/tty.h> > -#include <linux/tty_flip.h> > -#include <linux/serial.h> > -#include <linux/serialP.h> > -#include <linux/major.h> > -#include <linux/string.h> > -#include <linux/fcntl.h> > -#include <linux/ptrace.h> > -#include <linux/mm.h> > -#include <linux/init.h> > -#include <linux/delay.h> > -#include <asm/irq.h> > -#include <asm/m68360.h> > -#include <asm/commproc.h> > - > - > -#ifdef CONFIG_KGDB > -extern void breakpoint(void); > -extern void set_debug_traps(void); > -extern int kgdb_output_string (const char* s, unsigned int count); > -#endif > - > - > -/* #ifdef CONFIG_SERIAL_CONSOLE */ /* This seems to be a post 2.0 thing - mles */ > -#include <linux/console.h> > -#include <linux/jiffies.h> > - > -/* this defines the index into rs_table for the port to use > - */ > -#ifndef CONFIG_SERIAL_CONSOLE_PORT > -#define CONFIG_SERIAL_CONSOLE_PORT 1 /* ie SMC2 - note USE_SMC2 must be defined */ > -#endif > -/* #endif */ > - > -#if 0 > -/* SCC2 for console > - */ > -#undef CONFIG_SERIAL_CONSOLE_PORT > -#define CONFIG_SERIAL_CONSOLE_PORT 2 > -#endif > - > - > -#define TX_WAKEUP ASYNC_SHARE_IRQ > - > -static char *serial_name = "CPM UART driver"; > -static char *serial_version = "0.03"; > - > -static struct tty_driver *serial_driver; > -int serial_console_setup(struct console *co, char *options); > - > -/* > - * Serial driver configuration section. Here are the various options: > - */ > -#define SERIAL_PARANOIA_CHECK > -#define CONFIG_SERIAL_NOPAUSE_IO > -#define SERIAL_DO_RESTART > - > -/* Set of debugging defines */ > - > -#undef SERIAL_DEBUG_INTR > -#undef SERIAL_DEBUG_OPEN > -#undef SERIAL_DEBUG_FLOW > -#undef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT > - > -#define _INLINE_ inline > - > -#define DBG_CNT(s) > - > -/* We overload some of the items in the data structure to meet our > - * needs. For example, the port address is the CPM parameter ram > - * offset for the SCC or SMC. The maximum number of ports is 4 SCCs and > - * 2 SMCs. The "hub6" field is used to indicate the channel number, with > - * a flag indicating SCC or SMC, and the number is used as an index into > - * the CPM parameter area for this device. > - * The "type" field is currently set to 0, for PORT_UNKNOWN. It is > - * not currently used. I should probably use it to indicate the port > - * type of SMC or SCC. > - * The SMCs do not support any modem control signals. > - */ > -#define smc_scc_num hub6 > -#define NUM_IS_SCC ((int)0x00010000) > -#define PORT_NUM(P) ((P) & 0x0000ffff) > - > - > -#if defined (CONFIG_UCQUICC) > - > -volatile extern void *_periph_base; > -/* sipex transceiver > - * mode bits for are on pins > - * > - * SCC2 d16..19 > - * SCC3 d20..23 > - * SCC4 d24..27 > - */ > -#define SIPEX_MODE(n,m) ((m & 0x0f)<<(16+4*(n-1))) > - > -static uint sipex_mode_bits = 0x00000000; > - > -#endif > - > -/* There is no `serial_state' defined back here in 2.0. > - * Try to get by with serial_struct > - */ > -/* #define serial_state serial_struct */ > - > -/* 2.4 -> 2.0 portability problem: async_icount in 2.4 has a few > - * extras: */ > - > -#if 0 > -struct async_icount_24 { > - __u32 cts, dsr, rng, dcd, tx, rx; > - __u32 frame, parity, overrun, brk; > - __u32 buf_overrun; > -} icount; > -#endif > - > -#if 0 > - > -struct serial_state { > - int magic; > - int baud_base; > - unsigned long port; > - int irq; > - int flags; > - int hub6; > - int type; > - int line; > - int revision; /* Chip revision (950) */ > - int xmit_fifo_size; > - int custom_divisor; > - int count; > - u8 *iomem_base; > - u16 iomem_reg_shift; > - unsigned short close_delay; > - unsigned short closing_wait; /* time to wait before closing */ > - struct async_icount_24 icount; > - int io_type; > - struct async_struct *info; > -}; > -#endif > - > -#define SSTATE_MAGIC 0x5302 > - > - > - > -/* SMC2 is sometimes used for low performance TDM interfaces. Define > - * this as 1 if you want SMC2 as a serial port UART managed by this driver. > - * Define this as 0 if you wish to use SMC2 for something else. > - */ > -#define USE_SMC2 1 > - > -#if 0 > -/* Define SCC to ttySx mapping. */ > -#define SCC_NUM_BASE (USE_SMC2 + 1) /* SCC base tty "number" */ > - > -/* Define which SCC is the first one to use for a serial port. These > - * are 0-based numbers, i.e. this assumes the first SCC (SCC1) is used > - * for Ethernet, and the first available SCC for serial UART is SCC2. > - * NOTE: IF YOU CHANGE THIS, you have to change the PROFF_xxx and > - * interrupt vectors in the table below to match. > - */ > -#define SCC_IDX_BASE 1 /* table index */ > -#endif > - > - > -/* Processors other than the 860 only get SMCs configured by default. > - * Either they don't have SCCs or they are allocated somewhere else. > - * Of course, there are now 860s without some SCCs, so we will need to > - * address that someday. > - * The Embedded Planet Multimedia I/O cards use TDM interfaces to the > - * stereo codec parts, and we use SMC2 to help support that. > - */ > -static struct serial_state rs_table[] = { > -/* type line PORT IRQ FLAGS smc_scc_num (F.K.A. hub6) */ > - { 0, 0, PRSLOT_SMC1, CPMVEC_SMC1, 0, 0 } /* SMC1 ttyS0 */ > -#if USE_SMC2 > - ,{ 0, 0, PRSLOT_SMC2, CPMVEC_SMC2, 0, 1 } /* SMC2 ttyS1 */ > -#endif > - > -#if defined(CONFIG_SERIAL_68360_SCC) > - ,{ 0, 0, PRSLOT_SCC2, CPMVEC_SCC2, 0, (NUM_IS_SCC | 1) } /* SCC2 ttyS2 */ > - ,{ 0, 0, PRSLOT_SCC3, CPMVEC_SCC3, 0, (NUM_IS_SCC | 2) } /* SCC3 ttyS3 */ > - ,{ 0, 0, PRSLOT_SCC4, CPMVEC_SCC4, 0, (NUM_IS_SCC | 3) } /* SCC4 ttyS4 */ > -#endif > -}; > - > -#define NR_PORTS (sizeof(rs_table)/sizeof(struct serial_state)) > - > -/* The number of buffer descriptors and their sizes. > - */ > -#define RX_NUM_FIFO 4 > -#define RX_BUF_SIZE 32 > -#define TX_NUM_FIFO 4 > -#define TX_BUF_SIZE 32 > - > -#define CONSOLE_NUM_FIFO 2 > -#define CONSOLE_BUF_SIZE 4 > - > -char *console_fifos[CONSOLE_NUM_FIFO * CONSOLE_BUF_SIZE]; > - > -/* The async_struct in serial.h does not really give us what we > - * need, so define our own here. > - */ > -typedef struct serial_info { > - int magic; > - int flags; > - > - struct serial_state *state; > - /* struct serial_struct *state; */ > - /* struct async_struct *state; */ > - > - struct tty_struct *tty; > - int read_status_mask; > - int ignore_status_mask; > - int timeout; > - int line; > - int x_char; /* xon/xoff character */ > - int close_delay; > - unsigned short closing_wait; > - unsigned short closing_wait2; > - unsigned long event; > - unsigned long last_active; > - int blocked_open; /* # of blocked opens */ > - struct work_struct tqueue; > - struct work_struct tqueue_hangup; > - wait_queue_head_t open_wait; > - wait_queue_head_t close_wait; > - > - > -/* CPM Buffer Descriptor pointers. > - */ > - QUICC_BD *rx_bd_base; > - QUICC_BD *rx_cur; > - QUICC_BD *tx_bd_base; > - QUICC_BD *tx_cur; > -} ser_info_t; > - > - > -/* since kmalloc_init() does not get called until much after this initialization: */ > -static ser_info_t quicc_ser_info[NR_PORTS]; > -static char rx_buf_pool[NR_PORTS * RX_NUM_FIFO * RX_BUF_SIZE]; > -static char tx_buf_pool[NR_PORTS * TX_NUM_FIFO * TX_BUF_SIZE]; > - > -static void change_speed(ser_info_t *info); > -static void rs_360_wait_until_sent(struct tty_struct *tty, int timeout); > - > -static inline int serial_paranoia_check(ser_info_t *info, > - char *name, const char *routine) > -{ > -#ifdef SERIAL_PARANOIA_CHECK > - static const char *badmagic = > - "Warning: bad magic number for serial struct (%s) in %s\n"; > - static const char *badinfo = > - "Warning: null async_struct for (%s) in %s\n"; > - > - if (!info) { > - printk(badinfo, name, routine); > - return 1; > - } > - if (info->magic != SERIAL_MAGIC) { > - printk(badmagic, name, routine); > - return 1; > - } > -#endif > - return 0; > -} > - > -/* > - * This is used to figure out the divisor speeds and the timeouts, > - * indexed by the termio value. The generic CPM functions are responsible > - * for setting and assigning baud rate generators for us. > - */ > -static int baud_table[] = { > - 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, > - 9600, 19200, 38400, 57600, 115200, 230400, 460800, 0 }; > - > -/* This sucks. There is a better way: */ > -#if defined(CONFIG_CONSOLE_9600) > - #define CONSOLE_BAUDRATE 9600 > -#elif defined(CONFIG_CONSOLE_19200) > - #define CONSOLE_BAUDRATE 19200 > -#elif defined(CONFIG_CONSOLE_115200) > - #define CONSOLE_BAUDRATE 115200 > -#else > - #warning "console baud rate undefined" > - #define CONSOLE_BAUDRATE 9600 > -#endif > - > -/* > - * ------------------------------------------------------------ > - * rs_stop() and rs_start() > - * > - * This routines are called before setting or resetting tty->stopped. > - * They enable or disable transmitter interrupts, as necessary. > - * ------------------------------------------------------------ > - */ > -static void rs_360_stop(struct tty_struct *tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - int idx; > - unsigned long flags; > - volatile struct scc_regs *sccp; > - volatile struct smc_regs *smcp; > - > - if (serial_paranoia_check(info, tty->name, "rs_stop")) > - return; > - > - local_irq_save(flags); > - idx = PORT_NUM(info->state->smc_scc_num); > - if (info->state->smc_scc_num & NUM_IS_SCC) { > - sccp = &pquicc->scc_regs[idx]; > - sccp->scc_sccm &= ~UART_SCCM_TX; > - } else { > - /* smcp = &cpmp->cp_smc[idx]; */ > - smcp = &pquicc->smc_regs[idx]; > - smcp->smc_smcm &= ~SMCM_TX; > - } > - local_irq_restore(flags); > -} > - > - > -static void rs_360_start(struct tty_struct *tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - int idx; > - unsigned long flags; > - volatile struct scc_regs *sccp; > - volatile struct smc_regs *smcp; > - > - if (serial_paranoia_check(info, tty->name, "rs_stop")) > - return; > - > - local_irq_save(flags); > - idx = PORT_NUM(info->state->smc_scc_num); > - if (info->state->smc_scc_num & NUM_IS_SCC) { > - sccp = &pquicc->scc_regs[idx]; > - sccp->scc_sccm |= UART_SCCM_TX; > - } else { > - smcp = &pquicc->smc_regs[idx]; > - smcp->smc_smcm |= SMCM_TX; > - } > - local_irq_restore(flags); > -} > - > -/* > - * ---------------------------------------------------------------------- > - * > - * Here starts the interrupt handling routines. All of the following > - * subroutines are declared as inline and are folded into > - * rs_interrupt(). They were separated out for readability's sake. > - * > - * Note: rs_interrupt() is a "fast" interrupt, which means that it > - * runs with interrupts turned off. People who may want to modify > - * rs_interrupt() should try to keep the interrupt handler as fast as > - * possible. After you are done making modifications, it is not a bad > - * idea to do: > - * > - * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c > - * > - * and look at the resulting assemble code in serial.s. > - * > - * - Ted Ts'o (tytso@mit.edu), 7-Mar-93 > - * ----------------------------------------------------------------------- > - */ > - > -static _INLINE_ void receive_chars(ser_info_t *info) > -{ > - struct tty_struct *tty = info->port.tty; > - unsigned char ch, flag, *cp; > - /*int ignored = 0;*/ > - int i; > - ushort status; > - struct async_icount *icount; > - /* struct async_icount_24 *icount; */ > - volatile QUICC_BD *bdp; > - > - icount = &info->state->icount; > - > - /* Just loop through the closed BDs and copy the characters into > - * the buffer. > - */ > - bdp = info->rx_cur; > - for (;;) { > - if (bdp->status & BD_SC_EMPTY) /* If this one is empty */ > - break; /* we are all done */ > - > - /* The read status mask tell us what we should do with > - * incoming characters, especially if errors occur. > - * One special case is the use of BD_SC_EMPTY. If > - * this is not set, we are supposed to be ignoring > - * inputs. In this case, just mark the buffer empty and > - * continue. > - */ > - if (!(info->read_status_mask & BD_SC_EMPTY)) { > - bdp->status |= BD_SC_EMPTY; > - bdp->status &= > - ~(BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_OV); > - > - if (bdp->status & BD_SC_WRAP) > - bdp = info->rx_bd_base; > - else > - bdp++; > - continue; > - } > - > - /* Get the number of characters and the buffer pointer. > - */ > - i = bdp->length; > - /* cp = (unsigned char *)__va(bdp->buf); */ > - cp = (char *)bdp->buf; > - status = bdp->status; > - > - while (i-- > 0) { > - ch = *cp++; > - icount->rx++; > - > -#ifdef SERIAL_DEBUG_INTR > - printk("DR%02x:%02x...", ch, status); > -#endif > - flag = TTY_NORMAL; > - > - if (status & (BD_SC_BR | BD_SC_FR | > - BD_SC_PR | BD_SC_OV)) { > - /* > - * For statistics only > - */ > - if (status & BD_SC_BR) > - icount->brk++; > - else if (status & BD_SC_PR) > - icount->parity++; > - else if (status & BD_SC_FR) > - icount->frame++; > - if (status & BD_SC_OV) > - icount->overrun++; > - > - /* > - * Now check to see if character should be > - * ignored, and mask off conditions which > - * should be ignored. > - if (status & info->ignore_status_mask) { > - if (++ignored > 100) > - break; > - continue; > - } > - */ > - status &= info->read_status_mask; > - > - if (status & (BD_SC_BR)) { > -#ifdef SERIAL_DEBUG_INTR > - printk("handling break...."); > -#endif > - *tty->flip.flag_buf_ptr = TTY_BREAK; > - if (info->flags & ASYNC_SAK) > - do_SAK(tty); > - } else if (status & BD_SC_PR) > - flag = TTY_PARITY; > - else if (status & BD_SC_FR) > - flag = TTY_FRAME; > - } > - tty_insert_flip_char(tty, ch, flag); > - if (status & BD_SC_OV) > - /* > - * Overrun is special, since it's > - * reported immediately, and doesn't > - * affect the current character > - */ > - tty_insert_flip_char(tty, 0, TTY_OVERRUN); > - } > - > - /* This BD is ready to be used again. Clear status. > - * Get next BD. > - */ > - bdp->status |= BD_SC_EMPTY; > - bdp->status &= ~(BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_OV); > - > - if (bdp->status & BD_SC_WRAP) > - bdp = info->rx_bd_base; > - else > - bdp++; > - } > - > - info->rx_cur = (QUICC_BD *)bdp; > - > - tty_schedule_flip(tty); > -} > - > -static _INLINE_ void receive_break(ser_info_t *info) > -{ > - struct tty_struct *tty = info->port.tty; > - > - info->state->icount.brk++; > - /* Check to see if there is room in the tty buffer for > - * the break. If not, we exit now, losing the break. FIXME > - */ > - tty_insert_flip_char(tty, 0, TTY_BREAK); > - tty_schedule_flip(tty); > -} > - > -static _INLINE_ void transmit_chars(ser_info_t *info) > -{ > - > - if ((info->flags & TX_WAKEUP) || > - (info->port.tty->flags & (1 << TTY_DO_WRITE_WAKEUP))) { > - schedule_work(&info->tqueue); > - } > - > -#ifdef SERIAL_DEBUG_INTR > - printk("THRE..."); > -#endif > -} > - > -#ifdef notdef > - /* I need to do this for the SCCs, so it is left as a reminder. > - */ > -static _INLINE_ void check_modem_status(struct async_struct *info) > -{ > - int status; > - /* struct async_icount *icount; */ > - struct async_icount_24 *icount; > - > - status = serial_in(info, UART_MSR); > - > - if (status & UART_MSR_ANY_DELTA) { > - icount = &info->state->icount; > - /* update input line counters */ > - if (status & UART_MSR_TERI) > - icount->rng++; > - if (status & UART_MSR_DDSR) > - icount->dsr++; > - if (status & UART_MSR_DDCD) { > - icount->dcd++; > -#ifdef CONFIG_HARD_PPS > - if ((info->flags & ASYNC_HARDPPS_CD) && > - (status & UART_MSR_DCD)) > - hardpps(); > -#endif > - } > - if (status & UART_MSR_DCTS) > - icount->cts++; > - wake_up_interruptible(&info->delta_msr_wait); > - } > - > - if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { > -#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR)) > - printk("ttys%d CD now %s...", info->line, > - (status & UART_MSR_DCD) ? "on" : "off"); > -#endif > - if (status & UART_MSR_DCD) > - wake_up_interruptible(&info->open_wait); > - else { > -#ifdef SERIAL_DEBUG_OPEN > - printk("scheduling hangup..."); > -#endif > - queue_task(&info->tqueue_hangup, > - &tq_scheduler); > - } > - } > - if (info->flags & ASYNC_CTS_FLOW) { > - if (info->port.tty->hw_stopped) { > - if (status & UART_MSR_CTS) { > -#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW)) > - printk("CTS tx start..."); > -#endif > - info->port.tty->hw_stopped = 0; > - info->IER |= UART_IER_THRI; > - serial_out(info, UART_IER, info->IER); > - rs_sched_event(info, RS_EVENT_WRITE_WAKEUP); > - return; > - } > - } else { > - if (!(status & UART_MSR_CTS)) { > -#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW)) > - printk("CTS tx stop..."); > -#endif > - info->port.tty->hw_stopped = 1; > - info->IER &= ~UART_IER_THRI; > - serial_out(info, UART_IER, info->IER); > - } > - } > - } > -} > -#endif > - > -/* > - * This is the serial driver's interrupt routine for a single port > - */ > -/* static void rs_360_interrupt(void *dev_id) */ /* until and if we start servicing irqs here */ > -static void rs_360_interrupt(int vec, void *dev_id) > -{ > - u_char events; > - int idx; > - ser_info_t *info; > - volatile struct smc_regs *smcp; > - volatile struct scc_regs *sccp; > - > - info = dev_id; > - > - idx = PORT_NUM(info->state->smc_scc_num); > - if (info->state->smc_scc_num & NUM_IS_SCC) { > - sccp = &pquicc->scc_regs[idx]; > - events = sccp->scc_scce; > - if (events & SCCM_RX) > - receive_chars(info); > - if (events & SCCM_TX) > - transmit_chars(info); > - sccp->scc_scce = events; > - } else { > - smcp = &pquicc->smc_regs[idx]; > - events = smcp->smc_smce; > - if (events & SMCM_BRKE) > - receive_break(info); > - if (events & SMCM_RX) > - receive_chars(info); > - if (events & SMCM_TX) > - transmit_chars(info); > - smcp->smc_smce = events; > - } > - > -#ifdef SERIAL_DEBUG_INTR > - printk("rs_interrupt_single(%d, %x)...", > - info->state->smc_scc_num, events); > -#endif > -#ifdef modem_control > - check_modem_status(info); > -#endif > - info->last_active = jiffies; > -#ifdef SERIAL_DEBUG_INTR > - printk("end.\n"); > -#endif > -} > - > - > -/* > - * ------------------------------------------------------------------- > - * Here ends the serial interrupt routines. > - * ------------------------------------------------------------------- > - */ > - > - > -static void do_softint(void *private_) > -{ > - ser_info_t *info = (ser_info_t *) private_; > - struct tty_struct *tty; > - > - tty = info->port.tty; > - if (!tty) > - return; > - > - if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) > - tty_wakeup(tty); > -} > - > - > -/* > - * This routine is called from the scheduler tqueue when the interrupt > - * routine has signalled that a hangup has occurred. The path of > - * hangup processing is: > - * > - * serial interrupt routine -> (scheduler tqueue) -> > - * do_serial_hangup() -> tty->hangup() -> rs_hangup() > - * > - */ > -static void do_serial_hangup(void *private_) > -{ > - struct async_struct *info = (struct async_struct *) private_; > - struct tty_struct *tty; > - > - tty = info->port.tty; > - if (!tty) > - return; > - > - tty_hangup(tty); > -} > - > - > -static int startup(ser_info_t *info) > -{ > - unsigned long flags; > - int retval=0; > - int idx; > - /*struct serial_state *state = info->state;*/ > - volatile struct smc_regs *smcp; > - volatile struct scc_regs *sccp; > - volatile struct smc_uart_pram *up; > - volatile struct uart_pram *scup; > - > - > - local_irq_save(flags); > - > - if (info->flags & ASYNC_INITIALIZED) { > - goto errout; > - } > - > -#ifdef maybe > - if (!state->port || !state->type) { > - if (info->port.tty) > - set_bit(TTY_IO_ERROR, &info->port.tty->flags); > - goto errout; > - } > -#endif > - > -#ifdef SERIAL_DEBUG_OPEN > - printk("starting up ttys%d (irq %d)...", info->line, state->irq); > -#endif > - > - > -#ifdef modem_control > - info->MCR = 0; > - if (info->port.tty->termios->c_cflag & CBAUD) > - info->MCR = UART_MCR_DTR | UART_MCR_RTS; > -#endif > - > - if (info->port.tty) > - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); > - > - /* > - * and set the speed of the serial port > - */ > - change_speed(info); > - > - idx = PORT_NUM(info->state->smc_scc_num); > - if (info->state->smc_scc_num & NUM_IS_SCC) { > - sccp = &pquicc->scc_regs[idx]; > - scup = &pquicc->pram[info->state->port].scc.pscc.u; > - > - scup->mrblr = RX_BUF_SIZE; > - scup->max_idl = RX_BUF_SIZE; > - > - sccp->scc_sccm |= (UART_SCCM_TX | UART_SCCM_RX); > - sccp->scc_gsmr.w.low |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); > - > - } else { > - smcp = &pquicc->smc_regs[idx]; > - > - /* Enable interrupts and I/O. > - */ > - smcp->smc_smcm |= (SMCM_RX | SMCM_TX); > - smcp->smc_smcmr |= (SMCMR_REN | SMCMR_TEN); > - > - /* We can tune the buffer length and idle characters > - * to take advantage of the entire incoming buffer size. > - * If mrblr is something other than 1, maxidl has to be > - * non-zero or we never get an interrupt. The maxidl > - * is the number of character times we wait after reception > - * of the last character before we decide no more characters > - * are coming. > - */ > - /* up = (smc_uart_t *)&pquicc->cp_dparam[state->port]; */ > - /* holy unionized structures, Batman: */ > - up = &pquicc->pram[info->state->port].scc.pothers.idma_smc.psmc.u; > - > - up->mrblr = RX_BUF_SIZE; > - up->max_idl = RX_BUF_SIZE; > - > - up->brkcr = 1; /* number of break chars */ > - } > - > - info->flags |= ASYNC_INITIALIZED; > - local_irq_restore(flags); > - return 0; > - > -errout: > - local_irq_restore(flags); > - return retval; > -} > - > -/* > - * This routine will shutdown a serial port; interrupts are disabled, and > - * DTR is dropped if the hangup on close termio flag is on. > - */ > -static void shutdown(ser_info_t *info) > -{ > - unsigned long flags; > - struct serial_state *state; > - int idx; > - volatile struct smc_regs *smcp; > - volatile struct scc_regs *sccp; > - > - if (!(info->flags & ASYNC_INITIALIZED)) > - return; > - > - state = info->state; > - > -#ifdef SERIAL_DEBUG_OPEN > - printk("Shutting down serial port %d (irq %d)....", info->line, > - state->irq); > -#endif > - > - local_irq_save(flags); > - > - idx = PORT_NUM(state->smc_scc_num); > - if (state->smc_scc_num & NUM_IS_SCC) { > - sccp = &pquicc->scc_regs[idx]; > - sccp->scc_gsmr.w.low &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); > -#ifdef CONFIG_SERIAL_CONSOLE > - /* We can't disable the transmitter if this is the > - * system console. > - */ > - if ((state - rs_table) != CONFIG_SERIAL_CONSOLE_PORT) > -#endif > - sccp->scc_sccm &= ~(UART_SCCM_TX | UART_SCCM_RX); > - } else { > - smcp = &pquicc->smc_regs[idx]; > - > - /* Disable interrupts and I/O. > - */ > - smcp->smc_smcm &= ~(SMCM_RX | SMCM_TX); > -#ifdef CONFIG_SERIAL_CONSOLE > - /* We can't disable the transmitter if this is the > - * system console. > - */ > - if ((state - rs_table) != CONFIG_SERIAL_CONSOLE_PORT) > -#endif > - smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN); > - } > - > - if (info->port.tty) > - set_bit(TTY_IO_ERROR, &info->port.tty->flags); > - > - info->flags &= ~ASYNC_INITIALIZED; > - local_irq_restore(flags); > -} > - > -/* > - * This routine is called to set the UART divisor registers to match > - * the specified baud rate for a serial port. > - */ > -static void change_speed(ser_info_t *info) > -{ > - int baud_rate; > - unsigned cflag, cval, scval, prev_mode; > - int i, bits, sbits, idx; > - unsigned long flags; > - struct serial_state *state; > - volatile struct smc_regs *smcp; > - volatile struct scc_regs *sccp; > - > - if (!info->port.tty || !info->port.tty->termios) > - return; > - cflag = info->port.tty->termios->c_cflag; > - > - state = info->state; > - > - /* Character length programmed into the mode register is the > - * sum of: 1 start bit, number of data bits, 0 or 1 parity bit, > - * 1 or 2 stop bits, minus 1. > - * The value 'bits' counts this for us. > - */ > - cval = 0; > - scval = 0; > - > - /* byte size and parity */ > - switch (cflag & CSIZE) { > - case CS5: bits = 5; break; > - case CS6: bits = 6; break; > - case CS7: bits = 7; break; > - case CS8: bits = 8; break; > - /* Never happens, but GCC is too dumb to figure it out */ > - default: bits = 8; break; > - } > - sbits = bits - 5; > - > - if (cflag & CSTOPB) { > - cval |= SMCMR_SL; /* Two stops */ > - scval |= SCU_PMSR_SL; > - bits++; > - } > - if (cflag & PARENB) { > - cval |= SMCMR_PEN; > - scval |= SCU_PMSR_PEN; > - bits++; > - } > - if (!(cflag & PARODD)) { > - cval |= SMCMR_PM_EVEN; > - scval |= (SCU_PMSR_REVP | SCU_PMSR_TEVP); > - } > - > - /* Determine divisor based on baud rate */ > - i = cflag & CBAUD; > - if (i >= (sizeof(baud_table)/sizeof(int))) > - baud_rate = 9600; > - else > - baud_rate = baud_table[i]; > - > - info->timeout = (TX_BUF_SIZE*HZ*bits); > - info->timeout += HZ/50; /* Add .02 seconds of slop */ > - > -#ifdef modem_control > - /* CTS flow control flag and modem status interrupts */ > - info->IER &= ~UART_IER_MSI; > - if (info->flags & ASYNC_HARDPPS_CD) > - info->IER |= UART_IER_MSI; > - if (cflag & CRTSCTS) { > - info->flags |= ASYNC_CTS_FLOW; > - info->IER |= UART_IER_MSI; > - } else > - info->flags &= ~ASYNC_CTS_FLOW; > - if (cflag & CLOCAL) > - info->flags &= ~ASYNC_CHECK_CD; > - else { > - info->flags |= ASYNC_CHECK_CD; > - info->IER |= UART_IER_MSI; > - } > - serial_out(info, UART_IER, info->IER); > -#endif > - > - /* > - * Set up parity check flag > - */ > - info->read_status_mask = (BD_SC_EMPTY | BD_SC_OV); > - if (I_INPCK(info->port.tty)) > - info->read_status_mask |= BD_SC_FR | BD_SC_PR; > - if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) > - info->read_status_mask |= BD_SC_BR; > - > - /* > - * Characters to ignore > - */ > - info->ignore_status_mask = 0; > - if (I_IGNPAR(info->port.tty)) > - info->ignore_status_mask |= BD_SC_PR | BD_SC_FR; > - if (I_IGNBRK(info->port.tty)) { > - info->ignore_status_mask |= BD_SC_BR; > - /* > - * If we're ignore parity and break indicators, ignore > - * overruns too. (For real raw support). > - */ > - if (I_IGNPAR(info->port.tty)) > - info->ignore_status_mask |= BD_SC_OV; > - } > - /* > - * !!! ignore all characters if CREAD is not set > - */ > - if ((cflag & CREAD) == 0) > - info->read_status_mask &= ~BD_SC_EMPTY; > - local_irq_save(flags); > - > - /* Start bit has not been added (so don't, because we would just > - * subtract it later), and we need to add one for the number of > - * stops bits (there is always at least one). > - */ > - bits++; > - idx = PORT_NUM(state->smc_scc_num); > - if (state->smc_scc_num & NUM_IS_SCC) { > - sccp = &pquicc->scc_regs[idx]; > - sccp->scc_psmr = (sbits << 12) | scval; > - } else { > - smcp = &pquicc->smc_regs[idx]; > - > - /* Set the mode register. We want to keep a copy of the > - * enables, because we want to put them back if they were > - * present. > - */ > - prev_mode = smcp->smc_smcmr; > - smcp->smc_smcmr = smcr_mk_clen(bits) | cval | SMCMR_SM_UART; > - smcp->smc_smcmr |= (prev_mode & (SMCMR_REN | SMCMR_TEN)); > - } > - > - m360_cpm_setbrg((state - rs_table), baud_rate); > - > - local_irq_restore(flags); > -} > - > -static void rs_360_put_char(struct tty_struct *tty, unsigned char ch) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - volatile QUICC_BD *bdp; > - > - if (serial_paranoia_check(info, tty->name, "rs_put_char")) > - return 0; > - > - if (!tty) > - return 0; > - > - bdp = info->tx_cur; > - while (bdp->status & BD_SC_READY); > - > - /* *((char *)__va(bdp->buf)) = ch; */ > - *((char *)bdp->buf) = ch; > - bdp->length = 1; > - bdp->status |= BD_SC_READY; > - > - /* Get next BD. > - */ > - if (bdp->status & BD_SC_WRAP) > - bdp = info->tx_bd_base; > - else > - bdp++; > - > - info->tx_cur = (QUICC_BD *)bdp; > - return 1; > - > -} > - > -static int rs_360_write(struct tty_struct * tty, > - const unsigned char *buf, int count) > -{ > - int c, ret = 0; > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - volatile QUICC_BD *bdp; > - > -#ifdef CONFIG_KGDB > - /* Try to let stub handle output. Returns true if it did. */ > - if (kgdb_output_string(buf, count)) > - return ret; > -#endif > - > - if (serial_paranoia_check(info, tty->name, "rs_write")) > - return 0; > - > - if (!tty) > - return 0; > - > - bdp = info->tx_cur; > - > - while (1) { > - c = min(count, TX_BUF_SIZE); > - > - if (c <= 0) > - break; > - > - if (bdp->status & BD_SC_READY) { > - info->flags |= TX_WAKEUP; > - break; > - } > - > - /* memcpy(__va(bdp->buf), buf, c); */ > - memcpy((void *)bdp->buf, buf, c); > - > - bdp->length = c; > - bdp->status |= BD_SC_READY; > - > - buf += c; > - count -= c; > - ret += c; > - > - /* Get next BD. > - */ > - if (bdp->status & BD_SC_WRAP) > - bdp = info->tx_bd_base; > - else > - bdp++; > - info->tx_cur = (QUICC_BD *)bdp; > - } > - return ret; > -} > - > -static int rs_360_write_room(struct tty_struct *tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - int ret; > - > - if (serial_paranoia_check(info, tty->name, "rs_write_room")) > - return 0; > - > - if ((info->tx_cur->status & BD_SC_READY) == 0) { > - info->flags &= ~TX_WAKEUP; > - ret = TX_BUF_SIZE; > - } > - else { > - info->flags |= TX_WAKEUP; > - ret = 0; > - } > - return ret; > -} > - > -/* I could track this with transmit counters....maybe later. > -*/ > -static int rs_360_chars_in_buffer(struct tty_struct *tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - > - if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer")) > - return 0; > - return 0; > -} > - > -static void rs_360_flush_buffer(struct tty_struct *tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - > - if (serial_paranoia_check(info, tty->name, "rs_flush_buffer")) > - return; > - > - /* There is nothing to "flush", whatever we gave the CPM > - * is on its way out. > - */ > - tty_wakeup(tty); > - info->flags &= ~TX_WAKEUP; > -} > - > -/* > - * This function is used to send a high-priority XON/XOFF character to > - * the device > - */ > -static void rs_360_send_xchar(struct tty_struct *tty, char ch) > -{ > - volatile QUICC_BD *bdp; > - > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - > - if (serial_paranoia_check(info, tty->name, "rs_send_char")) > - return; > - > - bdp = info->tx_cur; > - while (bdp->status & BD_SC_READY); > - > - /* *((char *)__va(bdp->buf)) = ch; */ > - *((char *)bdp->buf) = ch; > - bdp->length = 1; > - bdp->status |= BD_SC_READY; > - > - /* Get next BD. > - */ > - if (bdp->status & BD_SC_WRAP) > - bdp = info->tx_bd_base; > - else > - bdp++; > - > - info->tx_cur = (QUICC_BD *)bdp; > -} > - > -/* > - * ------------------------------------------------------------ > - * rs_throttle() > - * > - * This routine is called by the upper-layer tty layer to signal that > - * incoming characters should be throttled. > - * ------------------------------------------------------------ > - */ > -static void rs_360_throttle(struct tty_struct * tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > -#ifdef SERIAL_DEBUG_THROTTLE > - char buf[64]; > - > - printk("throttle %s: %d....\n", _tty_name(tty, buf), > - tty->ldisc.chars_in_buffer(tty)); > -#endif > - > - if (serial_paranoia_check(info, tty->name, "rs_throttle")) > - return; > - > - if (I_IXOFF(tty)) > - rs_360_send_xchar(tty, STOP_CHAR(tty)); > - > -#ifdef modem_control > - if (tty->termios->c_cflag & CRTSCTS) > - info->MCR &= ~UART_MCR_RTS; > - > - local_irq_disable(); > - serial_out(info, UART_MCR, info->MCR); > - local_irq_enable(); > -#endif > -} > - > -static void rs_360_unthrottle(struct tty_struct * tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > -#ifdef SERIAL_DEBUG_THROTTLE > - char buf[64]; > - > - printk("unthrottle %s: %d....\n", _tty_name(tty, buf), > - tty->ldisc.chars_in_buffer(tty)); > -#endif > - > - if (serial_paranoia_check(info, tty->name, "rs_unthrottle")) > - return; > - > - if (I_IXOFF(tty)) { > - if (info->x_char) > - info->x_char = 0; > - else > - rs_360_send_xchar(tty, START_CHAR(tty)); > - } > -#ifdef modem_control > - if (tty->termios->c_cflag & CRTSCTS) > - info->MCR |= UART_MCR_RTS; > - local_irq_disable(); > - serial_out(info, UART_MCR, info->MCR); > - local_irq_enable(); > -#endif > -} > - > -/* > - * ------------------------------------------------------------ > - * rs_ioctl() and friends > - * ------------------------------------------------------------ > - */ > - > -#ifdef maybe > -/* > - * get_lsr_info - get line status register info > - * > - * Purpose: Let user call ioctl() to get info when the UART physically > - * is emptied. On bus types like RS485, the transmitter must > - * release the bus after transmitting. This must be done when > - * the transmit shift register is empty, not be done when the > - * transmit holding register is empty. This functionality > - * allows an RS485 driver to be written in user space. > - */ > -static int get_lsr_info(struct async_struct * info, unsigned int *value) > -{ > - unsigned char status; > - unsigned int result; > - > - local_irq_disable(); > - status = serial_in(info, UART_LSR); > - local_irq_enable(); > - result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); > - return put_user(result,value); > -} > -#endif > - > -static int rs_360_tiocmget(struct tty_struct *tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - unsigned int result = 0; > -#ifdef modem_control > - unsigned char control, status; > - > - if (serial_paranoia_check(info, tty->name, __func__)) > - return -ENODEV; > - > - if (tty->flags & (1 << TTY_IO_ERROR)) > - return -EIO; > - > - control = info->MCR; > - local_irq_disable(); > - status = serial_in(info, UART_MSR); > - local_irq_enable(); > - result = ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) > - | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) > -#ifdef TIOCM_OUT1 > - | ((control & UART_MCR_OUT1) ? TIOCM_OUT1 : 0) > - | ((control & UART_MCR_OUT2) ? TIOCM_OUT2 : 0) > -#endif > - | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) > - | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) > - | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) > - | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); > -#endif > - return result; > -} > - > -static int rs_360_tiocmset(struct tty_struct *tty, > - unsigned int set, unsigned int clear) > -{ > -#ifdef modem_control > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - unsigned int arg; > - > - if (serial_paranoia_check(info, tty->name, __func__)) > - return -ENODEV; > - > - if (tty->flags & (1 << TTY_IO_ERROR)) > - return -EIO; > - /* FIXME: locking on info->mcr */ > - if (set & TIOCM_RTS) > - info->mcr |= UART_MCR_RTS; > - if (set & TIOCM_DTR) > - info->mcr |= UART_MCR_DTR; > - if (clear & TIOCM_RTS) > - info->MCR &= ~UART_MCR_RTS; > - if (clear & TIOCM_DTR) > - info->MCR &= ~UART_MCR_DTR; > - > -#ifdef TIOCM_OUT1 > - if (set & TIOCM_OUT1) > - info->MCR |= UART_MCR_OUT1; > - if (set & TIOCM_OUT2) > - info->MCR |= UART_MCR_OUT2; > - if (clear & TIOCM_OUT1) > - info->MCR &= ~UART_MCR_OUT1; > - if (clear & TIOCM_OUT2) > - info->MCR &= ~UART_MCR_OUT2; > -#endif > - > - local_irq_disable(); > - serial_out(info, UART_MCR, info->MCR); > - local_irq_enable(); > -#endif > - return 0; > -} > - > -/* Sending a break is a two step process on the SMC/SCC. It is accomplished > - * by sending a STOP TRANSMIT command followed by a RESTART TRANSMIT > - * command. We take advantage of the begin/end functions to make this > - * happen. > - */ > -static ushort smc_chan_map[] = { > - CPM_CR_CH_SMC1, > - CPM_CR_CH_SMC2 > -}; > - > -static ushort scc_chan_map[] = { > - CPM_CR_CH_SCC1, > - CPM_CR_CH_SCC2, > - CPM_CR_CH_SCC3, > - CPM_CR_CH_SCC4 > -}; > - > -static void begin_break(ser_info_t *info) > -{ > - volatile QUICC *cp; > - ushort chan; > - int idx; > - > - cp = pquicc; > - > - idx = PORT_NUM(info->state->smc_scc_num); > - if (info->state->smc_scc_num & NUM_IS_SCC) > - chan = scc_chan_map[idx]; > - else > - chan = smc_chan_map[idx]; > - > - cp->cp_cr = mk_cr_cmd(chan, CPM_CR_STOP_TX) | CPM_CR_FLG; > - while (cp->cp_cr & CPM_CR_FLG); > -} > - > -static void end_break(ser_info_t *info) > -{ > - volatile QUICC *cp; > - ushort chan; > - int idx; > - > - cp = pquicc; > - > - idx = PORT_NUM(info->state->smc_scc_num); > - if (info->state->smc_scc_num & NUM_IS_SCC) > - chan = scc_chan_map[idx]; > - else > - chan = smc_chan_map[idx]; > - > - cp->cp_cr = mk_cr_cmd(chan, CPM_CR_RESTART_TX) | CPM_CR_FLG; > - while (cp->cp_cr & CPM_CR_FLG); > -} > - > -/* > - * This routine sends a break character out the serial port. > - */ > -static void send_break(ser_info_t *info, unsigned int duration) > -{ > -#ifdef SERIAL_DEBUG_SEND_BREAK > - printk("rs_send_break(%d) jiff=%lu...", duration, jiffies); > -#endif > - begin_break(info); > - msleep_interruptible(duration); > - end_break(info); > -#ifdef SERIAL_DEBUG_SEND_BREAK > - printk("done jiffies=%lu\n", jiffies); > -#endif > -} > - > - > -/* > - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) > - * Return: write counters to the user passed counter struct > - * NB: both 1->0 and 0->1 transitions are counted except for > - * RI where only 0->1 is counted. > - */ > -static int rs_360_get_icount(struct tty_struct *tty, > - struct serial_icounter_struct *icount) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - struct async_icount cnow; > - > - local_irq_disable(); > - cnow = info->state->icount; > - local_irq_enable(); > - > - icount->cts = cnow.cts; > - icount->dsr = cnow.dsr; > - icount->rng = cnow.rng; > - icount->dcd = cnow.dcd; > - > - return 0; > -} > - > -static int rs_360_ioctl(struct tty_struct *tty, > - unsigned int cmd, unsigned long arg) > -{ > - int error; > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - int retval; > - struct async_icount cnow; > - /* struct async_icount_24 cnow;*/ /* kernel counter temps */ > - struct serial_icounter_struct *p_cuser; /* user space */ > - > - if (serial_paranoia_check(info, tty->name, "rs_ioctl")) > - return -ENODEV; > - > - if (cmd != TIOCMIWAIT) { > - if (tty->flags & (1 << TTY_IO_ERROR)) > - return -EIO; > - } > - > - switch (cmd) { > - case TCSBRK: /* SVID version: non-zero arg --> no break */ > - retval = tty_check_change(tty); > - if (retval) > - return retval; > - tty_wait_until_sent(tty, 0); > - if (signal_pending(current)) > - return -EINTR; > - if (!arg) { > - send_break(info, 250); /* 1/4 second */ > - if (signal_pending(current)) > - return -EINTR; > - } > - return 0; > - case TCSBRKP: /* support for POSIX tcsendbreak() */ > - retval = tty_check_change(tty); > - if (retval) > - return retval; > - tty_wait_until_sent(tty, 0); > - if (signal_pending(current)) > - return -EINTR; > - send_break(info, arg ? arg*100 : 250); > - if (signal_pending(current)) > - return -EINTR; > - return 0; > - case TIOCSBRK: > - retval = tty_check_change(tty); > - if (retval) > - return retval; > - tty_wait_until_sent(tty, 0); > - begin_break(info); > - return 0; > - case TIOCCBRK: > - retval = tty_check_change(tty); > - if (retval) > - return retval; > - end_break(info); > - return 0; > -#ifdef maybe > - case TIOCSERGETLSR: /* Get line status register */ > - return get_lsr_info(info, (unsigned int *) arg); > -#endif > - /* > - * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change > - * - mask passed in arg for lines of interest > - * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) > - * Caller should use TIOCGICOUNT to see which one it was > - */ > - case TIOCMIWAIT: > -#ifdef modem_control > - local_irq_disable(); > - /* note the counters on entry */ > - cprev = info->state->icount; > - local_irq_enable(); > - while (1) { > - interruptible_sleep_on(&info->delta_msr_wait); > - /* see if a signal did it */ > - if (signal_pending(current)) > - return -ERESTARTSYS; > - local_irq_disable(); > - cnow = info->state->icount; /* atomic copy */ > - local_irq_enable(); > - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && > - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) > - return -EIO; /* no change => error */ > - if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || > - ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || > - ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || > - ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { > - return 0; > - } > - cprev = cnow; > - } > - /* NOTREACHED */ > -#else > - return 0; > -#endif > - > - > - default: > - return -ENOIOCTLCMD; > - } > - return 0; > -} > - > -/* FIX UP modem control here someday...... > -*/ > -static void rs_360_set_termios(struct tty_struct *tty, struct ktermios *old_termios) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - > - change_speed(info); > - > -#ifdef modem_control > - /* Handle transition to B0 status */ > - if ((old_termios->c_cflag & CBAUD) && > - !(tty->termios->c_cflag & CBAUD)) { > - info->MCR &= ~(UART_MCR_DTR|UART_MCR_RTS); > - local_irq_disable(); > - serial_out(info, UART_MCR, info->MCR); > - local_irq_enable(); > - } > - > - /* Handle transition away from B0 status */ > - if (!(old_termios->c_cflag & CBAUD) && > - (tty->termios->c_cflag & CBAUD)) { > - info->MCR |= UART_MCR_DTR; > - if (!tty->hw_stopped || > - !(tty->termios->c_cflag & CRTSCTS)) { > - info->MCR |= UART_MCR_RTS; > - } > - local_irq_disable(); > - serial_out(info, UART_MCR, info->MCR); > - local_irq_enable(); > - } > - > - /* Handle turning off CRTSCTS */ > - if ((old_termios->c_cflag & CRTSCTS) && > - !(tty->termios->c_cflag & CRTSCTS)) { > - tty->hw_stopped = 0; > - rs_360_start(tty); > - } > -#endif > - > -#if 0 > - /* > - * No need to wake up processes in open wait, since they > - * sample the CLOCAL flag once, and don't recheck it. > - * XXX It's not clear whether the current behavior is correct > - * or not. Hence, this may change..... > - */ > - if (!(old_termios->c_cflag & CLOCAL) && > - (tty->termios->c_cflag & CLOCAL)) > - wake_up_interruptible(&info->open_wait); > -#endif > -} > - > -/* > - * ------------------------------------------------------------ > - * rs_close() > - * > - * This routine is called when the serial port gets closed. First, we > - * wait for the last remaining data to be sent. Then, we unlink its > - * async structure from the interrupt chain if necessary, and we free > - * that IRQ if nothing is left in the chain. > - * ------------------------------------------------------------ > - */ > -static void rs_360_close(struct tty_struct *tty, struct file * filp) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - /* struct async_state *state; */ > - struct serial_state *state; > - unsigned long flags; > - int idx; > - volatile struct smc_regs *smcp; > - volatile struct scc_regs *sccp; > - > - if (!info || serial_paranoia_check(info, tty->name, "rs_close")) > - return; > - > - state = info->state; > - > - local_irq_save(flags); > - > - if (tty_hung_up_p(filp)) { > - DBG_CNT("before DEC-hung"); > - local_irq_restore(flags); > - return; > - } > - > -#ifdef SERIAL_DEBUG_OPEN > - printk("rs_close ttys%d, count = %d\n", info->line, state->count); > -#endif > - if ((tty->count == 1) && (state->count != 1)) { > - /* > - * Uh, oh. tty->count is 1, which means that the tty > - * structure will be freed. state->count should always > - * be one in these conditions. If it's greater than > - * one, we've got real problems, since it means the > - * serial port won't be shutdown. > - */ > - printk("rs_close: bad serial port count; tty->count is 1, " > - "state->count is %d\n", state->count); > - state->count = 1; > - } > - if (--state->count < 0) { > - printk("rs_close: bad serial port count for ttys%d: %d\n", > - info->line, state->count); > - state->count = 0; > - } > - if (state->count) { > - DBG_CNT("before DEC-2"); > - local_irq_restore(flags); > - return; > - } > - info->flags |= ASYNC_CLOSING; > - /* > - * Now we wait for the transmit buffer to clear; and we notify > - * the line discipline to only process XON/XOFF characters. > - */ > - tty->closing = 1; > - if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) > - tty_wait_until_sent(tty, info->closing_wait); > - /* > - * At this point we stop accepting input. To do this, we > - * disable the receive line status interrupts, and tell the > - * interrupt driver to stop checking the data ready bit in the > - * line status register. > - */ > - info->read_status_mask &= ~BD_SC_EMPTY; > - if (info->flags & ASYNC_INITIALIZED) { > - > - idx = PORT_NUM(info->state->smc_scc_num); > - if (info->state->smc_scc_num & NUM_IS_SCC) { > - sccp = &pquicc->scc_regs[idx]; > - sccp->scc_sccm &= ~UART_SCCM_RX; > - sccp->scc_gsmr.w.low &= ~SCC_GSMRL_ENR; > - } else { > - smcp = &pquicc->smc_regs[idx]; > - smcp->smc_smcm &= ~SMCM_RX; > - smcp->smc_smcmr &= ~SMCMR_REN; > - } > - /* > - * Before we drop DTR, make sure the UART transmitter > - * has completely drained; this is especially > - * important if there is a transmit FIFO! > - */ > - rs_360_wait_until_sent(tty, info->timeout); > - } > - shutdown(info); > - rs_360_flush_buffer(tty); > - tty_ldisc_flush(tty); > - tty->closing = 0; > - info->event = 0; > - info->port.tty = NULL; > - if (info->blocked_open) { > - if (info->close_delay) { > - msleep_interruptible(jiffies_to_msecs(info->close_delay)); > - } > - wake_up_interruptible(&info->open_wait); > - } > - info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); > - wake_up_interruptible(&info->close_wait); > - local_irq_restore(flags); > -} > - > -/* > - * rs_wait_until_sent() --- wait until the transmitter is empty > - */ > -static void rs_360_wait_until_sent(struct tty_struct *tty, int timeout) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - unsigned long orig_jiffies, char_time; > - /*int lsr;*/ > - volatile QUICC_BD *bdp; > - > - if (serial_paranoia_check(info, tty->name, "rs_wait_until_sent")) > - return; > - > -#ifdef maybe > - if (info->state->type == PORT_UNKNOWN) > - return; > -#endif > - > - orig_jiffies = jiffies; > - /* > - * Set the check interval to be 1/5 of the estimated time to > - * send a single character, and make it at least 1. The check > - * interval should also be less than the timeout. > - * > - * Note: we have to use pretty tight timings here to satisfy > - * the NIST-PCTS. > - */ > - char_time = 1; > - if (timeout) > - char_time = min(char_time, (unsigned long)timeout); > -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT > - printk("In rs_wait_until_sent(%d) check=%lu...", timeout, char_time); > - printk("jiff=%lu...", jiffies); > -#endif > - > - /* We go through the loop at least once because we can't tell > - * exactly when the last character exits the shifter. There can > - * be at least two characters waiting to be sent after the buffers > - * are empty. > - */ > - do { > -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT > - printk("lsr = %d (jiff=%lu)...", lsr, jiffies); > -#endif > -/* current->counter = 0; make us low-priority */ > - msleep_interruptible(jiffies_to_msecs(char_time)); > - if (signal_pending(current)) > - break; > - if (timeout && (time_after(jiffies, orig_jiffies + timeout))) > - break; > - /* The 'tx_cur' is really the next buffer to send. We > - * have to back up to the previous BD and wait for it > - * to go. This isn't perfect, because all this indicates > - * is the buffer is available. There are still characters > - * in the CPM FIFO. > - */ > - bdp = info->tx_cur; > - if (bdp == info->tx_bd_base) > - bdp += (TX_NUM_FIFO-1); > - else > - bdp--; > - } while (bdp->status & BD_SC_READY); > - current->state = TASK_RUNNING; > -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT > - printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); > -#endif > -} > - > -/* > - * rs_hangup() --- called by tty_hangup() when a hangup is signaled. > - */ > -static void rs_360_hangup(struct tty_struct *tty) > -{ > - ser_info_t *info = (ser_info_t *)tty->driver_data; > - struct serial_state *state = info->state; > - > - if (serial_paranoia_check(info, tty->name, "rs_hangup")) > - return; > - > - state = info->state; > - > - rs_360_flush_buffer(tty); > - shutdown(info); > - info->event = 0; > - state->count = 0; > - info->flags &= ~ASYNC_NORMAL_ACTIVE; > - info->port.tty = NULL; > - wake_up_interruptible(&info->open_wait); > -} > - > -/* > - * ------------------------------------------------------------ > - * rs_open() and friends > - * ------------------------------------------------------------ > - */ > -static int block_til_ready(struct tty_struct *tty, struct file * filp, > - ser_info_t *info) > -{ > -#ifdef DO_THIS_LATER > - DECLARE_WAITQUEUE(wait, current); > -#endif > - struct serial_state *state = info->state; > - int retval; > - int do_clocal = 0; > - > - /* > - * If the device is in the middle of being closed, then block > - * until it's done, and then try again. > - */ > - if (tty_hung_up_p(filp) || > - (info->flags & ASYNC_CLOSING)) { > - if (info->flags & ASYNC_CLOSING) > - interruptible_sleep_on(&info->close_wait); > -#ifdef SERIAL_DO_RESTART > - if (info->flags & ASYNC_HUP_NOTIFY) > - return -EAGAIN; > - else > - return -ERESTARTSYS; > -#else > - return -EAGAIN; > -#endif > - } > - > - /* > - * If non-blocking mode is set, or the port is not enabled, > - * then make the check up front and then exit. > - * If this is an SMC port, we don't have modem control to wait > - * for, so just get out here. > - */ > - if ((filp->f_flags & O_NONBLOCK) || > - (tty->flags & (1 << TTY_IO_ERROR)) || > - !(info->state->smc_scc_num & NUM_IS_SCC)) { > - info->flags |= ASYNC_NORMAL_ACTIVE; > - return 0; > - } > - > - if (tty->termios->c_cflag & CLOCAL) > - do_clocal = 1; > - > - /* > - * Block waiting for the carrier detect and the line to become > - * free (i.e., not in use by the callout). While we are in > - * this loop, state->count is dropped by one, so that > - * rs_close() knows when to free things. We restore it upon > - * exit, either normal or abnormal. > - */ > - retval = 0; > -#ifdef DO_THIS_LATER > - add_wait_queue(&info->open_wait, &wait); > -#ifdef SERIAL_DEBUG_OPEN > - printk("block_til_ready before block: ttys%d, count = %d\n", > - state->line, state->count); > -#endif > - local_irq_disable(); > - if (!tty_hung_up_p(filp)) > - state->count--; > - local_irq_enable(); > - info->blocked_open++; > - while (1) { > - local_irq_disable(); > - if (tty->termios->c_cflag & CBAUD) > - serial_out(info, UART_MCR, > - serial_inp(info, UART_MCR) | > - (UART_MCR_DTR | UART_MCR_RTS)); > - local_irq_enable(); > - set_current_state(TASK_INTERRUPTIBLE); > - if (tty_hung_up_p(filp) || > - !(info->flags & ASYNC_INITIALIZED)) { > -#ifdef SERIAL_DO_RESTART > - if (info->flags & ASYNC_HUP_NOTIFY) > - retval = -EAGAIN; > - else > - retval = -ERESTARTSYS; > -#else > - retval = -EAGAIN; > -#endif > - break; > - } > - if (!(info->flags & ASYNC_CLOSING) && > - (do_clocal || (serial_in(info, UART_MSR) & > - UART_MSR_DCD))) > - break; > - if (signal_pending(current)) { > - retval = -ERESTARTSYS; > - break; > - } > -#ifdef SERIAL_DEBUG_OPEN > - printk("block_til_ready blocking: ttys%d, count = %d\n", > - info->line, state->count); > -#endif > - tty_unlock(); > - schedule(); > - tty_lock(); > - } > - current->state = TASK_RUNNING; > - remove_wait_queue(&info->open_wait, &wait); > - if (!tty_hung_up_p(filp)) > - state->count++; > - info->blocked_open--; > -#ifdef SERIAL_DEBUG_OPEN > - printk("block_til_ready after blocking: ttys%d, count = %d\n", > - info->line, state->count); > -#endif > -#endif /* DO_THIS_LATER */ > - if (retval) > - return retval; > - info->flags |= ASYNC_NORMAL_ACTIVE; > - return 0; > -} > - > -static int get_async_struct(int line, ser_info_t **ret_info) > -{ > - struct serial_state *sstate; > - > - sstate = rs_table + line; > - if (sstate->info) { > - sstate->count++; > - *ret_info = (ser_info_t *)sstate->info; > - return 0; > - } > - else { > - return -ENOMEM; > - } > -} > - > -/* > - * This routine is called whenever a serial port is opened. It > - * enables interrupts for a serial port, linking in its async structure into > - * the IRQ chain. It also performs the serial-specific > - * initialization for the tty structure. > - */ > -static int rs_360_open(struct tty_struct *tty, struct file * filp) > -{ > - ser_info_t *info; > - int retval, line; > - > - line = tty->index; > - if ((line < 0) || (line >= NR_PORTS)) > - return -ENODEV; > - retval = get_async_struct(line, &info); > - if (retval) > - return retval; > - if (serial_paranoia_check(info, tty->name, "rs_open")) > - return -ENODEV; > - > -#ifdef SERIAL_DEBUG_OPEN > - printk("rs_open %s, count = %d\n", tty->name, info->state->count); > -#endif > - tty->driver_data = info; > - info->port.tty = tty; > - > - /* > - * Start up serial port > - */ > - retval = startup(info); > - if (retval) > - return retval; > - > - retval = block_til_ready(tty, filp, info); > - if (retval) { > -#ifdef SERIAL_DEBUG_OPEN > - printk("rs_open returning after block_til_ready with %d\n", > - retval); > -#endif > - return retval; > - } > - > -#ifdef SERIAL_DEBUG_OPEN > - printk("rs_open %s successful...", tty->name); > -#endif > - return 0; > -} > - > -/* > - * /proc fs routines.... > - */ > - > -static inline int line_info(char *buf, struct serial_state *state) > -{ > -#ifdef notdef > - struct async_struct *info = state->info, scr_info; > - char stat_buf[30], control, status; > -#endif > - int ret; > - > - ret = sprintf(buf, "%d: uart:%s port:%X irq:%d", > - state->line, > - (state->smc_scc_num & NUM_IS_SCC) ? "SCC" : "SMC", > - (unsigned int)(state->port), state->irq); > - > - if (!state->port || (state->type == PORT_UNKNOWN)) { > - ret += sprintf(buf+ret, "\n"); > - return ret; > - } > - > -#ifdef notdef > - /* > - * Figure out the current RS-232 lines > - */ > - if (!info) { > - info = &scr_info; /* This is just for serial_{in,out} */ > - > - info->magic = SERIAL_MAGIC; > - info->port = state->port; > - info->flags = state->flags; > - info->quot = 0; > - info->port.tty = NULL; > - } > - local_irq_disable(); > - status = serial_in(info, UART_MSR); > - control = info ? info->MCR : serial_in(info, UART_MCR); > - local_irq_enable(); > - > - stat_buf[0] = 0; > - stat_buf[1] = 0; > - if (control & UART_MCR_RTS) > - strcat(stat_buf, "|RTS"); > - if (status & UART_MSR_CTS) > - strcat(stat_buf, "|CTS"); > - if (control & UART_MCR_DTR) > - strcat(stat_buf, "|DTR"); > - if (status & UART_MSR_DSR) > - strcat(stat_buf, "|DSR"); > - if (status & UART_MSR_DCD) > - strcat(stat_buf, "|CD"); > - if (status & UART_MSR_RI) > - strcat(stat_buf, "|RI"); > - > - if (info->quot) { > - ret += sprintf(buf+ret, " baud:%d", > - state->baud_base / info->quot); > - } > - > - ret += sprintf(buf+ret, " tx:%d rx:%d", > - state->icount.tx, state->icount.rx); > - > - if (state->icount.frame) > - ret += sprintf(buf+ret, " fe:%d", state->icount.frame); > - > - if (state->icount.parity) > - ret += sprintf(buf+ret, " pe:%d", state->icount.parity); > - > - if (state->icount.brk) > - ret += sprintf(buf+ret, " brk:%d", state->icount.brk); > - > - if (state->icount.overrun) > - ret += sprintf(buf+ret, " oe:%d", state->icount.overrun); > - > - /* > - * Last thing is the RS-232 status lines > - */ > - ret += sprintf(buf+ret, " %s\n", stat_buf+1); > -#endif > - return ret; > -} > - > -int rs_360_read_proc(char *page, char **start, off_t off, int count, > - int *eof, void *data) > -{ > - int i, len = 0; > - off_t begin = 0; > - > - len += sprintf(page, "serinfo:1.0 driver:%s\n", serial_version); > - for (i = 0; i < NR_PORTS && len < 4000; i++) { > - len += line_info(page + len, &rs_table[i]); > - if (len+begin > off+count) > - goto done; > - if (len+begin < off) { > - begin += len; > - len = 0; > - } > - } > - *eof = 1; > -done: > - if (off >= len+begin) > - return 0; > - *start = page + (begin-off); > - return ((count < begin+len-off) ? count : begin+len-off); > -} > - > -/* > - * --------------------------------------------------------------------- > - * rs_init() and friends > - * > - * rs_init() is called at boot-time to initialize the serial driver. > - * --------------------------------------------------------------------- > - */ > - > -/* > - * This routine prints out the appropriate serial driver version > - * number, and identifies which options were configured into this > - * driver. > - */ > -static _INLINE_ void show_serial_version(void) > -{ > - printk(KERN_INFO "%s version %s\n", serial_name, serial_version); > -} > - > - > -/* > - * The serial console driver used during boot. Note that these names > - * clash with those found in "serial.c", so we currently can't support > - * the 16xxx uarts and these at the same time. I will fix this to become > - * an indirect function call from tty_io.c (or something). > - */ > - > -#ifdef CONFIG_SERIAL_CONSOLE > - > -/* > - * Print a string to the serial port trying not to disturb any possible > - * real use of the port... > - */ > -static void my_console_write(int idx, const char *s, > - unsigned count) > -{ > - struct serial_state *ser; > - ser_info_t *info; > - unsigned i; > - QUICC_BD *bdp, *bdbase; > - volatile struct smc_uart_pram *up; > - volatile u_char *cp; > - > - ser = rs_table + idx; > - > - > - /* If the port has been initialized for general use, we have > - * to use the buffer descriptors allocated there. Otherwise, > - * we simply use the single buffer allocated. > - */ > - if ((info = (ser_info_t *)ser->info) != NULL) { > - bdp = info->tx_cur; > - bdbase = info->tx_bd_base; > - } > - else { > - /* Pointer to UART in parameter ram. > - */ > - /* up = (smc_uart_t *)&cpmp->cp_dparam[ser->port]; */ > - up = &pquicc->pram[ser->port].scc.pothers.idma_smc.psmc.u; > - > - /* Get the address of the host memory buffer. > - */ > - bdp = bdbase = (QUICC_BD *)((uint)pquicc + (uint)up->tbase); > - } > - > - /* > - * We need to gracefully shut down the transmitter, disable > - * interrupts, then send our bytes out. > - */ > - > - /* > - * Now, do each character. This is not as bad as it looks > - * since this is a holding FIFO and not a transmitting FIFO. > - * We could add the complexity of filling the entire transmit > - * buffer, but we would just wait longer between accesses...... > - */ > - for (i = 0; i < count; i++, s++) { > - /* Wait for transmitter fifo to empty. > - * Ready indicates output is ready, and xmt is doing > - * that, not that it is ready for us to send. > - */ > - while (bdp->status & BD_SC_READY); > - > - /* Send the character out. > - */ > - cp = bdp->buf; > - *cp = *s; > - > - bdp->length = 1; > - bdp->status |= BD_SC_READY; > - > - if (bdp->status & BD_SC_WRAP) > - bdp = bdbase; > - else > - bdp++; > - > - /* if a LF, also do CR... */ > - if (*s == 10) { > - while (bdp->status & BD_SC_READY); > - /* cp = __va(bdp->buf); */ > - cp = bdp->buf; > - *cp = 13; > - bdp->length = 1; > - bdp->status |= BD_SC_READY; > - > - if (bdp->status & BD_SC_WRAP) { > - bdp = bdbase; > - } > - else { > - bdp++; > - } > - } > - } > - > - /* > - * Finally, Wait for transmitter & holding register to empty > - * and restore the IER > - */ > - while (bdp->status & BD_SC_READY); > - > - if (info) > - info->tx_cur = (QUICC_BD *)bdp; > -} > - > -static void serial_console_write(struct console *c, const char *s, > - unsigned count) > -{ > -#ifdef CONFIG_KGDB > - /* Try to let stub handle output. Returns true if it did. */ > - if (kgdb_output_string(s, count)) > - return; > -#endif > - my_console_write(c->index, s, count); > -} > - > - > - > -/*void console_print_68360(const char *p) > -{ > - const char *cp = p; > - int i; > - > - for (i=0;cp[i]!=0;i++); > - > - serial_console_write (p, i); > - > - //Comment this if you want to have a strict interrupt-driven output > - //rs_fair_output(); > - > - return; > -}*/ > - > - > - > - > - > - > -#ifdef CONFIG_XMON > -int > -xmon_360_write(const char *s, unsigned count) > -{ > - my_console_write(0, s, count); > - return(count); > -} > -#endif > - > -#ifdef CONFIG_KGDB > -void > -putDebugChar(char ch) > -{ > - my_console_write(0, &ch, 1); > -} > -#endif > - > -/* > - * Receive character from the serial port. This only works well > - * before the port is initialized for real use. > - */ > -static int my_console_wait_key(int idx, int xmon, char *obuf) > -{ > - struct serial_state *ser; > - u_char c, *cp; > - ser_info_t *info; > - QUICC_BD *bdp; > - volatile struct smc_uart_pram *up; > - int i; > - > - ser = rs_table + idx; > - > - /* Get the address of the host memory buffer. > - * If the port has been initialized for general use, we must > - * use information from the port structure. > - */ > - if ((info = (ser_info_t *)ser->info)) > - bdp = info->rx_cur; > - else > - /* bdp = (QUICC_BD *)&cpmp->cp_dpmem[up->smc_rbase]; */ > - bdp = (QUICC_BD *)((uint)pquicc + (uint)up->tbase); > - > - /* Pointer to UART in parameter ram. > - */ > - /* up = (smc_uart_t *)&cpmp->cp_dparam[ser->port]; */ > - up = &pquicc->pram[info->state->port].scc.pothers.idma_smc.psmc.u; > - > - /* > - * We need to gracefully shut down the receiver, disable > - * interrupts, then read the input. > - * XMON just wants a poll. If no character, return -1, else > - * return the character. > - */ > - if (!xmon) { > - while (bdp->status & BD_SC_EMPTY); > - } > - else { > - if (bdp->status & BD_SC_EMPTY) > - return -1; > - } > - > - cp = (char *)bdp->buf; > - > - if (obuf) { > - i = c = bdp->length; > - while (i-- > 0) > - *obuf++ = *cp++; > - } > - else { > - c = *cp; > - } > - bdp->status |= BD_SC_EMPTY; > - > - if (info) { > - if (bdp->status & BD_SC_WRAP) { > - bdp = info->rx_bd_base; > - } > - else { > - bdp++; > - } > - info->rx_cur = (QUICC_BD *)bdp; > - } > - > - return((int)c); > -} > - > -static int serial_console_wait_key(struct console *co) > -{ > - return(my_console_wait_key(co->index, 0, NULL)); > -} > - > -#ifdef CONFIG_XMON > -int > -xmon_360_read_poll(void) > -{ > - return(my_console_wait_key(0, 1, NULL)); > -} > - > -int > -xmon_360_read_char(void) > -{ > - return(my_console_wait_key(0, 0, NULL)); > -} > -#endif > - > -#ifdef CONFIG_KGDB > -static char kgdb_buf[RX_BUF_SIZE], *kgdp; > -static int kgdb_chars; > - > -unsigned char > -getDebugChar(void) > -{ > - if (kgdb_chars <= 0) { > - kgdb_chars = my_console_wait_key(0, 0, kgdb_buf); > - kgdp = kgdb_buf; > - } > - kgdb_chars--; > - > - return(*kgdp++); > -} > - > -void kgdb_interruptible(int state) > -{ > -} > -void kgdb_map_scc(void) > -{ > - struct serial_state *ser; > - uint mem_addr; > - volatile QUICC_BD *bdp; > - volatile smc_uart_t *up; > - > - cpmp = (cpm360_t *)&(((immap_t *)IMAP_ADDR)->im_cpm); > - > - /* To avoid data cache CPM DMA coherency problems, allocate a > - * buffer in the CPM DPRAM. This will work until the CPM and > - * serial ports are initialized. At that time a memory buffer > - * will be allocated. > - * The port is already initialized from the boot procedure, all > - * we do here is give it a different buffer and make it a FIFO. > - */ > - > - ser = rs_table; > - > - /* Right now, assume we are using SMCs. > - */ > - up = (smc_uart_t *)&cpmp->cp_dparam[ser->port]; > - > - /* Allocate space for an input FIFO, plus a few bytes for output. > - * Allocate bytes to maintain word alignment. > - */ > - mem_addr = (uint)(&cpmp->cp_dpmem[0x1000]); > - > - /* Set the physical address of the host memory buffers in > - * the buffer descriptors. > - */ > - bdp = (QUICC_BD *)&cpmp->cp_dpmem[up->smc_rbase]; > - bdp->buf = mem_addr; > - > - bdp = (QUICC_BD *)&cpmp->cp_dpmem[up->smc_tbase]; > - bdp->buf = mem_addr+RX_BUF_SIZE; > - > - up->smc_mrblr = RX_BUF_SIZE; /* receive buffer length */ > - up->smc_maxidl = RX_BUF_SIZE; > -} > -#endif > - > -static struct tty_struct *serial_console_device(struct console *c, int *index) > -{ > - *index = c->index; > - return serial_driver; > -} > - > - > -struct console sercons = { > - .name = "ttyS", > - .write = serial_console_write, > - .device = serial_console_device, > - .wait_key = serial_console_wait_key, > - .setup = serial_console_setup, > - .flags = CON_PRINTBUFFER, > - .index = CONFIG_SERIAL_CONSOLE_PORT, > -}; > - > - > - > -/* > - * Register console. > - */ > -long console_360_init(long kmem_start, long kmem_end) > -{ > - register_console(&sercons); > - /*register_console (console_print_68360); - 2.0.38 only required a write > - function pointer. */ > - return kmem_start; > -} > - > -#endif > - > -/* Index in baud rate table of the default console baud rate. > -*/ > -static int baud_idx; > - > -static const struct tty_operations rs_360_ops = { > - .owner = THIS_MODULE, > - .open = rs_360_open, > - .close = rs_360_close, > - .write = rs_360_write, > - .put_char = rs_360_put_char, > - .write_room = rs_360_write_room, > - .chars_in_buffer = rs_360_chars_in_buffer, > - .flush_buffer = rs_360_flush_buffer, > - .ioctl = rs_360_ioctl, > - .throttle = rs_360_throttle, > - .unthrottle = rs_360_unthrottle, > - /* .send_xchar = rs_360_send_xchar, */ > - .set_termios = rs_360_set_termios, > - .stop = rs_360_stop, > - .start = rs_360_start, > - .hangup = rs_360_hangup, > - /* .wait_until_sent = rs_360_wait_until_sent, */ > - /* .read_proc = rs_360_read_proc, */ > - .tiocmget = rs_360_tiocmget, > - .tiocmset = rs_360_tiocmset, > - .get_icount = rs_360_get_icount, > -}; > - > -static int __init rs_360_init(void) > -{ > - struct serial_state * state; > - ser_info_t *info; > - void *mem_addr; > - uint dp_addr, iobits; > - int i, j, idx; > - ushort chan; > - QUICC_BD *bdp; > - volatile QUICC *cp; > - volatile struct smc_regs *sp; > - volatile struct smc_uart_pram *up; > - volatile struct scc_regs *scp; > - volatile struct uart_pram *sup; > - /* volatile immap_t *immap; */ > - > - serial_driver = alloc_tty_driver(NR_PORTS); > - if (!serial_driver) > - return -1; > - > - show_serial_version(); > - > - serial_driver->name = "ttyS"; > - serial_driver->major = TTY_MAJOR; > - serial_driver->minor_start = 64; > - serial_driver->type = TTY_DRIVER_TYPE_SERIAL; > - serial_driver->subtype = SERIAL_TYPE_NORMAL; > - serial_driver->init_termios = tty_std_termios; > - serial_driver->init_termios.c_cflag = > - baud_idx | CS8 | CREAD | HUPCL | CLOCAL; > - serial_driver->flags = TTY_DRIVER_REAL_RAW; > - tty_set_operations(serial_driver, &rs_360_ops); > - > - if (tty_register_driver(serial_driver)) > - panic("Couldn't register serial driver\n"); > - > - cp = pquicc; /* Get pointer to Communication Processor */ > - /* immap = (immap_t *)IMAP_ADDR; */ /* and to internal registers */ > - > - > - /* Configure SCC2, SCC3, and SCC4 instead of port A parallel I/O. > - */ > - /* The "standard" configuration through the 860. > - */ > -/* immap->im_ioport.iop_papar |= 0x00fc; */ > -/* immap->im_ioport.iop_padir &= ~0x00fc; */ > -/* immap->im_ioport.iop_paodr &= ~0x00fc; */ > - cp->pio_papar |= 0x00fc; > - cp->pio_padir &= ~0x00fc; > - /* cp->pio_paodr &= ~0x00fc; */ > - > - > - /* Since we don't yet do modem control, connect the port C pins > - * as general purpose I/O. This will assert CTS and CD for the > - * SCC ports. > - */ > - /* FIXME: see 360um p.7-365 and 860um p.34-12 > - * I can't make sense of these bits - mleslie*/ > -/* immap->im_ioport.iop_pcdir |= 0x03c6; */ > -/* immap->im_ioport.iop_pcpar &= ~0x03c6; */ > - > -/* cp->pio_pcdir |= 0x03c6; */ > -/* cp->pio_pcpar &= ~0x03c6; */ > - > - > - > - /* Connect SCC2 and SCC3 to NMSI. Connect BRG3 to SCC2 and > - * BRG4 to SCC3. > - */ > - cp->si_sicr &= ~0x00ffff00; > - cp->si_sicr |= 0x001b1200; > - > -#ifdef CONFIG_PP04 > - /* Frequentis PP04 forced to RS-232 until we know better. > - * Port C 12 and 13 low enables RS-232 on SCC3 and SCC4. > - */ > - immap->im_ioport.iop_pcdir |= 0x000c; > - immap->im_ioport.iop_pcpar &= ~0x000c; > - immap->im_ioport.iop_pcdat &= ~0x000c; > - > - /* This enables the TX driver. > - */ > - cp->cp_pbpar &= ~0x6000; > - cp->cp_pbdat &= ~0x6000; > -#endif > - > - for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) { > - state->magic = SSTATE_MAGIC; > - state->line = i; > - state->type = PORT_UNKNOWN; > - state->custom_divisor = 0; > - state->close_delay = 5*HZ/10; > - state->closing_wait = 30*HZ; > - state->icount.cts = state->icount.dsr = > - state->icount.rng = state->icount.dcd = 0; > - state->icount.rx = state->icount.tx = 0; > - state->icount.frame = state->icount.parity = 0; > - state->icount.overrun = state->icount.brk = 0; > - printk(KERN_INFO "ttyS%d at irq 0x%02x is an %s\n", > - i, (unsigned int)(state->irq), > - (state->smc_scc_num & NUM_IS_SCC) ? "SCC" : "SMC"); > - > -#ifdef CONFIG_SERIAL_CONSOLE > - /* If we just printed the message on the console port, and > - * we are about to initialize it for general use, we have > - * to wait a couple of character times for the CR/NL to > - * make it out of the transmit buffer. > - */ > - if (i == CONFIG_SERIAL_CONSOLE_PORT) > - mdelay(8); > - > - > -/* idx = PORT_NUM(info->state->smc_scc_num); */ > -/* if (info->state->smc_scc_num & NUM_IS_SCC) */ > -/* chan = scc_chan_map[idx]; */ > -/* else */ > -/* chan = smc_chan_map[idx]; */ > - > -/* cp->cp_cr = mk_cr_cmd(chan, CPM_CR_STOP_TX) | CPM_CR_FLG; */ > -/* while (cp->cp_cr & CPM_CR_FLG); */ > - > -#endif > - /* info = kmalloc(sizeof(ser_info_t), GFP_KERNEL); */ > - info = &quicc_ser_info[i]; > - if (info) { > - memset (info, 0, sizeof(ser_info_t)); > - info->magic = SERIAL_MAGIC; > - info->line = i; > - info->flags = state->flags; > - INIT_WORK(&info->tqueue, do_softint, info); > - INIT_WORK(&info->tqueue_hangup, do_serial_hangup, info); > - init_waitqueue_head(&info->open_wait); > - init_waitqueue_head(&info->close_wait); > - info->state = state; > - state->info = (struct async_struct *)info; > - > - /* We need to allocate a transmit and receive buffer > - * descriptors from dual port ram, and a character > - * buffer area from host mem. > - */ > - dp_addr = m360_cpm_dpalloc(sizeof(QUICC_BD) * RX_NUM_FIFO); > - > - /* Allocate space for FIFOs in the host memory. > - * (for now this is from a static array of buffers :( > - */ > - /* mem_addr = m360_cpm_hostalloc(RX_NUM_FIFO * RX_BUF_SIZE); */ > - /* mem_addr = kmalloc (RX_NUM_FIFO * RX_BUF_SIZE, GFP_BUFFER); */ > - mem_addr = &rx_buf_pool[i * RX_NUM_FIFO * RX_BUF_SIZE]; > - > - /* Set the physical address of the host memory > - * buffers in the buffer descriptors, and the > - * virtual address for us to work with. > - */ > - bdp = (QUICC_BD *)((uint)pquicc + dp_addr); > - info->rx_cur = info->rx_bd_base = bdp; > - > - /* initialize rx buffer descriptors */ > - for (j=0; j<(RX_NUM_FIFO-1); j++) { > - bdp->buf = &rx_buf_pool[(i * RX_NUM_FIFO + j ) * RX_BUF_SIZE]; > - bdp->status = BD_SC_EMPTY | BD_SC_INTRPT; > - mem_addr += RX_BUF_SIZE; > - bdp++; > - } > - bdp->buf = &rx_buf_pool[(i * RX_NUM_FIFO + j ) * RX_BUF_SIZE]; > - bdp->status = BD_SC_WRAP | BD_SC_EMPTY | BD_SC_INTRPT; > - > - > - idx = PORT_NUM(info->state->smc_scc_num); > - if (info->state->smc_scc_num & NUM_IS_SCC) { > - > -#if defined (CONFIG_UCQUICC) && 1 > - /* set the transceiver mode to RS232 */ > - sipex_mode_bits &= ~(uint)SIPEX_MODE(idx,0x0f); /* clear current mode */ > - sipex_mode_bits |= (uint)SIPEX_MODE(idx,0x02); > - *(uint *)_periph_base = sipex_mode_bits; > - /* printk ("sipex bits = 0x%08x\n", sipex_mode_bits); */ > -#endif > - } > - > - dp_addr = m360_cpm_dpalloc(sizeof(QUICC_BD) * TX_NUM_FIFO); > - > - /* Allocate space for FIFOs in the host memory. > - */ > - /* mem_addr = m360_cpm_hostalloc(TX_NUM_FIFO * TX_BUF_SIZE); */ > - /* mem_addr = kmalloc (TX_NUM_FIFO * TX_BUF_SIZE, GFP_BUFFER); */ > - mem_addr = &tx_buf_pool[i * TX_NUM_FIFO * TX_BUF_SIZE]; > - > - /* Set the physical address of the host memory > - * buffers in the buffer descriptors, and the > - * virtual address for us to work with. > - */ > - /* bdp = (QUICC_BD *)&cp->cp_dpmem[dp_addr]; */ > - bdp = (QUICC_BD *)((uint)pquicc + dp_addr); > - info->tx_cur = info->tx_bd_base = (QUICC_BD *)bdp; > - > - /* initialize tx buffer descriptors */ > - for (j=0; j<(TX_NUM_FIFO-1); j++) { > - bdp->buf = &tx_buf_pool[(i * TX_NUM_FIFO + j ) * TX_BUF_SIZE]; > - bdp->status = BD_SC_INTRPT; > - mem_addr += TX_BUF_SIZE; > - bdp++; > - } > - bdp->buf = &tx_buf_pool[(i * TX_NUM_FIFO + j ) * TX_BUF_SIZE]; > - bdp->status = (BD_SC_WRAP | BD_SC_INTRPT); > - > - if (info->state->smc_scc_num & NUM_IS_SCC) { > - scp = &pquicc->scc_regs[idx]; > - sup = &pquicc->pram[info->state->port].scc.pscc.u; > - sup->rbase = dp_addr; > - sup->tbase = dp_addr; > - > - /* Set up the uart parameters in the > - * parameter ram. > - */ > - sup->rfcr = SMC_EB; > - sup->tfcr = SMC_EB; > - > - /* Set this to 1 for now, so we get single > - * character interrupts. Using idle character > - * time requires some additional tuning. > - */ > - sup->mrblr = 1; > - sup->max_idl = 0; > - sup->brkcr = 1; > - sup->parec = 0; > - sup->frmer = 0; > - sup->nosec = 0; > - sup->brkec = 0; > - sup->uaddr1 = 0; > - sup->uaddr2 = 0; > - sup->toseq = 0; > - { > - int i; > - for (i=0;i<8;i++) > - sup->cc[i] = 0x8000; > - } > - sup->rccm = 0xc0ff; > - > - /* Send the CPM an initialize command. > - */ > - chan = scc_chan_map[idx]; > - > - /* execute the INIT RX & TX PARAMS command for this channel. */ > - cp->cp_cr = mk_cr_cmd(chan, CPM_CR_INIT_TRX) | CPM_CR_FLG; > - while (cp->cp_cr & CPM_CR_FLG); > - > - /* Set UART mode, 8 bit, no parity, one stop. > - * Enable receive and transmit. > - */ > - scp->scc_gsmr.w.high = 0; > - scp->scc_gsmr.w.low = > - (SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16); > - > - /* Disable all interrupts and clear all pending > - * events. > - */ > - scp->scc_sccm = 0; > - scp->scc_scce = 0xffff; > - scp->scc_dsr = 0x7e7e; > - scp->scc_psmr = 0x3000; > - > - /* If the port is the console, enable Rx and Tx. > - */ > -#ifdef CONFIG_SERIAL_CONSOLE > - if (i == CONFIG_SERIAL_CONSOLE_PORT) > - scp->scc_gsmr.w.low |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); > -#endif > - } > - else { > - /* Configure SMCs Tx/Rx instead of port B > - * parallel I/O. > - */ > - up = &pquicc->pram[info->state->port].scc.pothers.idma_smc.psmc.u; > - up->rbase = dp_addr; > - > - iobits = 0xc0 << (idx * 4); > - cp->pip_pbpar |= iobits; > - cp->pip_pbdir &= ~iobits; > - cp->pip_pbodr &= ~iobits; > - > - > - /* Connect the baud rate generator to the > - * SMC based upon index in rs_table. Also > - * make sure it is connected to NMSI. > - */ > - cp->si_simode &= ~(0xffff << (idx * 16)); > - cp->si_simode |= (i << ((idx * 16) + 12)); > - > - up->tbase = dp_addr; > - > - /* Set up the uart parameters in the > - * parameter ram. > - */ > - up->rfcr = SMC_EB; > - up->tfcr = SMC_EB; > - > - /* Set this to 1 for now, so we get single > - * character interrupts. Using idle character > - * time requires some additional tuning. > - */ > - up->mrblr = 1; > - up->max_idl = 0; > - up->brkcr = 1; > - > - /* Send the CPM an initialize command. > - */ > - chan = smc_chan_map[idx]; > - > - cp->cp_cr = mk_cr_cmd(chan, > - CPM_CR_INIT_TRX) | CPM_CR_FLG; > -#ifdef CONFIG_SERIAL_CONSOLE > - if (i == CONFIG_SERIAL_CONSOLE_PORT) > - printk(""); > -#endif > - while (cp->cp_cr & CPM_CR_FLG); > - > - /* Set UART mode, 8 bit, no parity, one stop. > - * Enable receive and transmit. > - */ > - sp = &cp->smc_regs[idx]; > - sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART; > - > - /* Disable all interrupts and clear all pending > - * events. > - */ > - sp->smc_smcm = 0; > - sp->smc_smce = 0xff; > - > - /* If the port is the console, enable Rx and Tx. > - */ > -#ifdef CONFIG_SERIAL_CONSOLE > - if (i == CONFIG_SERIAL_CONSOLE_PORT) > - sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN; > -#endif > - } > - > - /* Install interrupt handler. > - */ > - /* cpm_install_handler(IRQ_MACHSPEC | state->irq, rs_360_interrupt, info); */ > - /*request_irq(IRQ_MACHSPEC | state->irq, rs_360_interrupt, */ > - request_irq(state->irq, rs_360_interrupt, > - IRQ_FLG_LOCK, "ttyS", (void *)info); > - > - /* Set up the baud rate generator. > - */ > - m360_cpm_setbrg(i, baud_table[baud_idx]); > - > - } > - } > - > - return 0; > -} > -module_init(rs_360_init); > - > -/* This must always be called before the rs_360_init() function, otherwise > - * it blows away the port control information. > - */ > -//static int __init serial_console_setup( struct console *co, char *options) > -int serial_console_setup( struct console *co, char *options) > -{ > - struct serial_state *ser; > - uint mem_addr, dp_addr, bidx, idx, iobits; > - ushort chan; > - QUICC_BD *bdp; > - volatile QUICC *cp; > - volatile struct smc_regs *sp; > - volatile struct scc_regs *scp; > - volatile struct smc_uart_pram *up; > - volatile struct uart_pram *sup; > - > -/* mleslie TODO: > - * add something to the 68k bootloader to store a desired initial console baud rate */ > - > -/* bd_t *bd; */ /* a board info struct used by EPPC-bug */ > -/* bd = (bd_t *)__res; */ > - > - for (bidx = 0; bidx < (sizeof(baud_table) / sizeof(int)); bidx++) > - /* if (bd->bi_baudrate == baud_table[bidx]) */ > - if (CONSOLE_BAUDRATE == baud_table[bidx]) > - break; > - > - /* co->cflag = CREAD|CLOCAL|bidx|CS8; */ > - baud_idx = bidx; > - > - ser = rs_table + CONFIG_SERIAL_CONSOLE_PORT; > - > - cp = pquicc; /* Get pointer to Communication Processor */ > - > - idx = PORT_NUM(ser->smc_scc_num); > - if (ser->smc_scc_num & NUM_IS_SCC) { > - > - /* TODO: need to set up SCC pin assignment etc. here */ > - > - } > - else { > - iobits = 0xc0 << (idx * 4); > - cp->pip_pbpar |= iobits; > - cp->pip_pbdir &= ~iobits; > - cp->pip_pbodr &= ~iobits; > - > - /* Connect the baud rate generator to the > - * SMC based upon index in rs_table. Also > - * make sure it is connected to NMSI. > - */ > - cp->si_simode &= ~(0xffff << (idx * 16)); > - cp->si_simode |= (idx << ((idx * 16) + 12)); > - } > - > - /* When we get here, the CPM has been reset, so we need > - * to configure the port. > - * We need to allocate a transmit and receive buffer descriptor > - * from dual port ram, and a character buffer area from host mem. > - */ > - > - /* Allocate space for two buffer descriptors in the DP ram. > - */ > - dp_addr = m360_cpm_dpalloc(sizeof(QUICC_BD) * CONSOLE_NUM_FIFO); > - > - /* Allocate space for two 2 byte FIFOs in the host memory. > - */ > - /* mem_addr = m360_cpm_hostalloc(8); */ > - mem_addr = (uint)console_fifos; > - > - > - /* Set the physical address of the host memory buffers in > - * the buffer descriptors. > - */ > - /* bdp = (QUICC_BD *)&cp->cp_dpmem[dp_addr]; */ > - bdp = (QUICC_BD *)((uint)pquicc + dp_addr); > - bdp->buf = (char *)mem_addr; > - (bdp+1)->buf = (char *)(mem_addr+4); > - > - /* For the receive, set empty and wrap. > - * For transmit, set wrap. > - */ > - bdp->status = BD_SC_EMPTY | BD_SC_WRAP; > - (bdp+1)->status = BD_SC_WRAP; > - > - /* Set up the uart parameters in the parameter ram. > - */ > - if (ser->smc_scc_num & NUM_IS_SCC) { > - scp = &cp->scc_regs[idx]; > - /* sup = (scc_uart_t *)&cp->cp_dparam[ser->port]; */ > - sup = &pquicc->pram[ser->port].scc.pscc.u; > - > - sup->rbase = dp_addr; > - sup->tbase = dp_addr + sizeof(QUICC_BD); > - > - /* Set up the uart parameters in the > - * parameter ram. > - */ > - sup->rfcr = SMC_EB; > - sup->tfcr = SMC_EB; > - > - /* Set this to 1 for now, so we get single > - * character interrupts. Using idle character > - * time requires some additional tuning. > - */ > - sup->mrblr = 1; > - sup->max_idl = 0; > - sup->brkcr = 1; > - sup->parec = 0; > - sup->frmer = 0; > - sup->nosec = 0; > - sup->brkec = 0; > - sup->uaddr1 = 0; > - sup->uaddr2 = 0; > - sup->toseq = 0; > - { > - int i; > - for (i=0;i<8;i++) > - sup->cc[i] = 0x8000; > - } > - sup->rccm = 0xc0ff; > - > - /* Send the CPM an initialize command. > - */ > - chan = scc_chan_map[idx]; > - > - cp->cp_cr = mk_cr_cmd(chan, CPM_CR_INIT_TRX) | CPM_CR_FLG; > - while (cp->cp_cr & CPM_CR_FLG); > - > - /* Set UART mode, 8 bit, no parity, one stop. > - * Enable receive and transmit. > - */ > - scp->scc_gsmr.w.high = 0; > - scp->scc_gsmr.w.low = > - (SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16); > - > - /* Disable all interrupts and clear all pending > - * events. > - */ > - scp->scc_sccm = 0; > - scp->scc_scce = 0xffff; > - scp->scc_dsr = 0x7e7e; > - scp->scc_psmr = 0x3000; > - > - scp->scc_gsmr.w.low |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); > - > - } > - else { > - /* up = (smc_uart_t *)&cp->cp_dparam[ser->port]; */ > - up = &pquicc->pram[ser->port].scc.pothers.idma_smc.psmc.u; > - > - up->rbase = dp_addr; /* Base of receive buffer desc. */ > - up->tbase = dp_addr+sizeof(QUICC_BD); /* Base of xmt buffer desc. */ > - up->rfcr = SMC_EB; > - up->tfcr = SMC_EB; > - > - /* Set this to 1 for now, so we get single character interrupts. > - */ > - up->mrblr = 1; /* receive buffer length */ > - up->max_idl = 0; /* wait forever for next char */ > - > - /* Send the CPM an initialize command. > - */ > - chan = smc_chan_map[idx]; > - cp->cp_cr = mk_cr_cmd(chan, CPM_CR_INIT_TRX) | CPM_CR_FLG; > - while (cp->cp_cr & CPM_CR_FLG); > - > - /* Set UART mode, 8 bit, no parity, one stop. > - * Enable receive and transmit. > - */ > - sp = &cp->smc_regs[idx]; > - sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART; > - > - /* And finally, enable Rx and Tx. > - */ > - sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN; > - } > - > - /* Set up the baud rate generator. > - */ > - /* m360_cpm_setbrg((ser - rs_table), bd->bi_baudrate); */ > - m360_cpm_setbrg((ser - rs_table), CONSOLE_BAUDRATE); > - > - return 0; > -} > - > -/* > - * Local variables: > - * c-indent-level: 4 > - * c-basic-offset: 4 > - * tab-width: 4 > - * End: > - */ > diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig > index 10babe2..4cbb5a5 100644 > --- a/drivers/tty/serial/Kconfig > +++ b/drivers/tty/serial/Kconfig > @@ -1035,23 +1035,6 @@ config SERIAL_MCF_CONSOLE > help > Enable a ColdFire internal serial port to be the system console. > > -config SERIAL_68360_SMC > - bool "68360 SMC uart support" > - depends on M68360 > - help > - This driver supports the SMC serial ports of the Motorola 68360 CPU. > - > -config SERIAL_68360_SCC > - bool "68360 SCC uart support" > - depends on M68360 > - help > - This driver supports the SCC serial ports of the Motorola 68360 CPU. > - > -config SERIAL_68360 > - bool > - depends on SERIAL_68360_SMC || SERIAL_68360_SCC > - default y > - > config SERIAL_PMACZILOG > tristate "Mac or PowerMac z85c30 ESCC support" > depends on (M68K && MAC) || (PPC_OF && PPC_PMAC) > diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile > index 7874813..3644de5 100644 > --- a/drivers/tty/serial/Makefile > +++ b/drivers/tty/serial/Makefile > @@ -49,7 +49,6 @@ obj-$(CONFIG_SERIAL_MAX3107_AAVA) += max3107-aava.o > obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o > obj-$(CONFIG_SERIAL_MUX) += mux.o > obj-$(CONFIG_SERIAL_68328) += 68328serial.o > -obj-$(CONFIG_SERIAL_68360) += 68360serial.o > obj-$(CONFIG_SERIAL_MCF) += mcf.o > obj-$(CONFIG_SERIAL_PMACZILOG) += pmac_zilog.o > obj-$(CONFIG_SERIAL_DZ) += dz.o > -- > 1.7.6.1
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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