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Date: Thu, 30 Oct 2014 09:08:22 -0400
From: Mark Hounschell <markh@...pro.net>
To: Daeseok Youn <daeseok.youn@...il.com>, lidza.louina@...il.com
CC: gregkh@...uxfoundation.org, driverdev-devel@...uxdriverproject.org,
devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
dan.carpenter@...cle.com
Subject: Re: [PATCH V2] staging: dgap: re-arrange functions for removing forward
declarations
On 10/29/2014 11:14 PM, Daeseok Youn wrote:
> Re-arrange the functions for removing forward declarations.
>
> Tested-by: Mark Hounschell <markh@...pro.net>
I have re-tested this patch and resend my
Tested-by: Mark Hounschell <markh@...pro.net>
for the new [V2] patch.
Mark
> Signed-off-by: Daeseok Youn <daeseok.youn@...il.com>
> ---
> V2: this patch is rebased on staging-next branch.
>
> drivers/staging/dgap/dgap.c | 7463 +++++++++++++++++++++----------------------
> 1 files changed, 3669 insertions(+), 3794 deletions(-)
>
> diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c
> index dfdf209..fe229be 100644
> --- a/drivers/staging/dgap/dgap.c
> +++ b/drivers/staging/dgap/dgap.c
> @@ -65,145 +65,6 @@
>
> #include "dgap.h"
>
> -MODULE_LICENSE("GPL");
> -MODULE_AUTHOR("Digi International, http://www.digi.com");
> -MODULE_DESCRIPTION("Driver for the Digi International EPCA PCI based product line");
> -MODULE_SUPPORTED_DEVICE("dgap");
> -
> -static int dgap_start(void);
> -static void dgap_stop(void);
> -static void dgap_init_globals(void);
> -static struct board_t *dgap_found_board(struct pci_dev *pdev, int id,
> - int boardnum);
> -static void dgap_cleanup_board(struct board_t *brd);
> -static void dgap_poll_handler(ulong dummy);
> -static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
> -static void dgap_remove_one(struct pci_dev *dev);
> -static int dgap_remap(struct board_t *brd);
> -static void dgap_unmap(struct board_t *brd);
> -static irqreturn_t dgap_intr(int irq, void *voidbrd);
> -
> -static int dgap_tty_open(struct tty_struct *tty, struct file *file);
> -static void dgap_tty_close(struct tty_struct *tty, struct file *file);
> -static int dgap_block_til_ready(struct tty_struct *tty, struct file *file,
> - struct channel_t *ch);
> -static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
> - unsigned long arg);
> -static int dgap_tty_digigeta(struct channel_t *ch,
> - struct digi_t __user *retinfo);
> -static int dgap_tty_digiseta(struct channel_t *ch, struct board_t *bd,
> - struct un_t *un, struct digi_t __user *new_info);
> -static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo);
> -static int dgap_tty_digisetedelay(struct channel_t *ch, struct board_t *bd,
> - struct un_t *un, int __user *new_info);
> -static int dgap_tty_write_room(struct tty_struct *tty);
> -static int dgap_tty_chars_in_buffer(struct tty_struct *tty);
> -static void dgap_tty_start(struct tty_struct *tty);
> -static void dgap_tty_stop(struct tty_struct *tty);
> -static void dgap_tty_throttle(struct tty_struct *tty);
> -static void dgap_tty_unthrottle(struct tty_struct *tty);
> -static void dgap_tty_flush_chars(struct tty_struct *tty);
> -static void dgap_tty_flush_buffer(struct tty_struct *tty);
> -static void dgap_tty_hangup(struct tty_struct *tty);
> -static int dgap_wait_for_drain(struct tty_struct *tty);
> -static int dgap_set_modem_info(struct channel_t *ch, struct board_t *bd,
> - struct un_t *un, unsigned int command,
> - unsigned int __user *value);
> -static int dgap_get_modem_info(struct channel_t *ch,
> - unsigned int __user *value);
> -static int dgap_tty_digisetcustombaud(struct channel_t *ch, struct board_t *bd,
> - struct un_t *un, int __user *new_info);
> -static int dgap_tty_digigetcustombaud(struct channel_t *ch, struct un_t *un,
> - int __user *retinfo);
> -static int dgap_tty_tiocmget(struct tty_struct *tty);
> -static int dgap_tty_tiocmset(struct tty_struct *tty, unsigned int set,
> - unsigned int clear);
> -static int dgap_tty_send_break(struct tty_struct *tty, int msec);
> -static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout);
> -static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf,
> - int count);
> -static void dgap_tty_set_termios(struct tty_struct *tty,
> - struct ktermios *old_termios);
> -static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c);
> -static void dgap_tty_send_xchar(struct tty_struct *tty, char ch);
> -
> -static int dgap_tty_register(struct board_t *brd);
> -static void dgap_tty_unregister(struct board_t *brd);
> -static int dgap_tty_init(struct board_t *);
> -static void dgap_tty_free(struct board_t *);
> -static void dgap_cleanup_tty(struct board_t *);
> -static void dgap_carrier(struct channel_t *ch);
> -static void dgap_input(struct channel_t *ch);
> -
> -/*
> - * Our function prototypes from dgap_fep5
> - */
> -static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds);
> -static int dgap_event(struct board_t *bd);
> -
> -static void dgap_poll_tasklet(unsigned long data);
> -static void dgap_cmdb(struct channel_t *ch, u8 cmd, u8 byte1,
> - u8 byte2, uint ncmds);
> -static void dgap_cmdw(struct channel_t *ch, u8 cmd, u16 word, uint ncmds);
> -static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt);
> -static int dgap_param(struct channel_t *ch, struct board_t *bd, u32 un_type);
> -static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf,
> - unsigned char *fbuf, int *len);
> -static uint dgap_get_custom_baud(struct channel_t *ch);
> -static void dgap_firmware_reset_port(struct channel_t *ch);
> -
> -/*
> - * Function prototypes from dgap_parse.c.
> - */
> -static int dgap_gettok(char **in);
> -static char *dgap_getword(char **in);
> -static int dgap_checknode(struct cnode *p);
> -
> -/*
> - * Function prototypes from dgap_sysfs.h
> - */
> -static void dgap_create_ports_sysfiles(struct board_t *bd);
> -static void dgap_remove_ports_sysfiles(struct board_t *bd);
> -
> -static int dgap_create_driver_sysfiles(struct pci_driver *);
> -static void dgap_remove_driver_sysfiles(struct pci_driver *);
> -
> -static void dgap_create_tty_sysfs(struct un_t *un, struct device *c);
> -static void dgap_remove_tty_sysfs(struct device *c);
> -
> -/*
> - * Function prototypes from dgap_parse.h
> - */
> -static int dgap_parsefile(char **in);
> -static struct cnode *dgap_find_config(int type, int bus, int slot);
> -static uint dgap_config_get_num_prts(struct board_t *bd);
> -static char *dgap_create_config_string(struct board_t *bd, char *string);
> -static uint dgap_config_get_useintr(struct board_t *bd);
> -static uint dgap_config_get_altpin(struct board_t *bd);
> -
> -static void dgap_do_bios_load(struct board_t *brd, const u8 *ubios, int len);
> -static void dgap_do_fep_load(struct board_t *brd, const u8 *ufep, int len);
> -#ifdef DIGI_CONCENTRATORS_SUPPORTED
> -static void dgap_do_conc_load(struct board_t *brd, u8 *uaddr, int len);
> -#endif
> -static int dgap_alloc_flipbuf(struct board_t *brd);
> -static void dgap_free_flipbuf(struct board_t *brd);
> -static int dgap_request_irq(struct board_t *brd);
> -static void dgap_free_irq(struct board_t *brd);
> -
> -static void dgap_get_vpd(struct board_t *brd);
> -static void dgap_do_reset_board(struct board_t *brd);
> -static int dgap_test_bios(struct board_t *brd);
> -static int dgap_test_fep(struct board_t *brd);
> -static int dgap_tty_register_ports(struct board_t *brd);
> -static int dgap_firmware_load(struct pci_dev *pdev, int card_type,
> - struct board_t *brd);
> -static void dgap_cleanup_nodes(void);
> -
> -static void dgap_cleanup_module(void);
> -
> -module_exit(dgap_cleanup_module);
> -
> /*
> * File operations permitted on Control/Management major.
> */
> @@ -298,13 +159,6 @@ static struct board_id dgap_ids[] = {
> {0,} /* 0 terminated list. */
> };
>
> -static struct pci_driver dgap_driver = {
> - .name = "dgap",
> - .probe = dgap_init_one,
> - .id_table = dgap_pci_tbl,
> - .remove = dgap_remove_one,
> -};
> -
> struct firmware_info {
> u8 *conf_name; /* dgap.conf */
> u8 *bios_name; /* BIOS filename */
> @@ -367,29 +221,6 @@ static struct ktermios dgap_default_termios = {
> .c_line = 0,
> };
>
> -static const struct tty_operations dgap_tty_ops = {
> - .open = dgap_tty_open,
> - .close = dgap_tty_close,
> - .write = dgap_tty_write,
> - .write_room = dgap_tty_write_room,
> - .flush_buffer = dgap_tty_flush_buffer,
> - .chars_in_buffer = dgap_tty_chars_in_buffer,
> - .flush_chars = dgap_tty_flush_chars,
> - .ioctl = dgap_tty_ioctl,
> - .set_termios = dgap_tty_set_termios,
> - .stop = dgap_tty_stop,
> - .start = dgap_tty_start,
> - .throttle = dgap_tty_throttle,
> - .unthrottle = dgap_tty_unthrottle,
> - .hangup = dgap_tty_hangup,
> - .put_char = dgap_tty_put_char,
> - .tiocmget = dgap_tty_tiocmget,
> - .tiocmset = dgap_tty_tiocmset,
> - .break_ctl = dgap_tty_send_break,
> - .wait_until_sent = dgap_tty_wait_until_sent,
> - .send_xchar = dgap_tty_send_xchar
> -};
> -
> /*
> * Our needed internal static variables from dgap_parse.c
> */
> @@ -457,1089 +288,1226 @@ static struct toklist dgap_tlist[] = {
> { 0, NULL }
> };
>
> -/************************************************************************
> - *
> - * Driver load/unload functions
> - *
> - ************************************************************************/
>
> /*
> - * init_module()
> - *
> - * Module load. This is where it all starts.
> + * dgap_sindex: much like index(), but it looks for a match of any character in
> + * the group, and returns that position. If the first character is a ^, then
> + * this will match the first occurrence not in that group.
> */
> -static int dgap_init_module(void)
> +static char *dgap_sindex(char *string, char *group)
> {
> - int rc;
> -
> - pr_info("%s, Digi International Part Number %s\n", DG_NAME, DG_PART);
> -
> - rc = dgap_start();
> - if (rc)
> - return rc;
> -
> - rc = pci_register_driver(&dgap_driver);
> - if (rc)
> - goto err_stop;
> -
> - rc = dgap_create_driver_sysfiles(&dgap_driver);
> - if (rc)
> - goto err_unregister;
> -
> - dgap_driver_state = DRIVER_READY;
> + char *ptr;
>
> - return 0;
> + if (!string || !group)
> + return (char *) NULL;
>
> -err_unregister:
> - pci_unregister_driver(&dgap_driver);
> -err_stop:
> - dgap_stop();
> + if (*group == '^') {
> + group++;
> + for (; *string; string++) {
> + for (ptr = group; *ptr; ptr++) {
> + if (*ptr == *string)
> + break;
> + }
> + if (*ptr == '\0')
> + return string;
> + }
> + } else {
> + for (; *string; string++) {
> + for (ptr = group; *ptr; ptr++) {
> + if (*ptr == *string)
> + return string;
> + }
> + }
> + }
>
> - return rc;
> + return (char *) NULL;
> }
> -module_init(dgap_init_module);
>
> /*
> - * Start of driver.
> + * get a word from the input stream, also keep track of current line number.
> + * words are separated by whitespace.
> */
> -static int dgap_start(void)
> +static char *dgap_getword(char **in)
> {
> - int rc;
> - unsigned long flags;
> - struct device *device;
> -
> - /*
> - * make sure that the globals are
> - * init'd before we do anything else
> - */
> - dgap_init_globals();
> -
> - dgap_numboards = 0;
> + char *ret_ptr = *in;
>
> - pr_info("For the tools package please visit http://www.digi.com\n");
> + char *ptr = dgap_sindex(*in, " \t\n");
>
> - /*
> - * Register our base character device into the kernel.
> - */
> + /* If no word found, return null */
> + if (!ptr)
> + return NULL;
>
> - /*
> - * Register management/dpa devices
> - */
> - rc = register_chrdev(DIGI_DGAP_MAJOR, "dgap", &dgap_board_fops);
> - if (rc < 0)
> - return rc;
> + /* Mark new location for our buffer */
> + *ptr = '\0';
> + *in = ptr + 1;
>
> - dgap_class = class_create(THIS_MODULE, "dgap_mgmt");
> - if (IS_ERR(dgap_class)) {
> - rc = PTR_ERR(dgap_class);
> - goto failed_class;
> + /* Eat any extra spaces/tabs/newlines that might be present */
> + while (*in && **in && ((**in == ' ') ||
> + (**in == '\t') ||
> + (**in == '\n'))) {
> + **in = '\0';
> + *in = *in + 1;
> }
>
> - device = device_create(dgap_class, NULL,
> - MKDEV(DIGI_DGAP_MAJOR, 0),
> - NULL, "dgap_mgmt");
> - if (IS_ERR(device)) {
> - rc = PTR_ERR(device);
> - goto failed_device;
> - }
> + return ret_ptr;
> +}
>
> - /* Start the poller */
> - spin_lock_irqsave(&dgap_poll_lock, flags);
> - init_timer(&dgap_poll_timer);
> - dgap_poll_timer.function = dgap_poll_handler;
> - dgap_poll_timer.data = 0;
> - dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
> - dgap_poll_timer.expires = dgap_poll_time;
> - spin_unlock_irqrestore(&dgap_poll_lock, flags);
>
> - add_timer(&dgap_poll_timer);
> +/*
> + * Get a token from the input file; return 0 if end of file is reached
> + */
> +static int dgap_gettok(char **in)
> +{
> + char *w;
> + struct toklist *t;
>
> - return rc;
> + if (strstr(dgap_cword, "board")) {
> + w = dgap_getword(in);
> + snprintf(dgap_cword, MAXCWORD, "%s", w);
> + for (t = dgap_brdtype; t->token != 0; t++) {
> + if (!strcmp(w, t->string))
> + return t->token;
> + }
> + } else {
> + while ((w = dgap_getword(in))) {
> + snprintf(dgap_cword, MAXCWORD, "%s", w);
> + for (t = dgap_tlist; t->token != 0; t++) {
> + if (!strcmp(w, t->string))
> + return t->token;
> + }
> + }
> + }
>
> -failed_device:
> - class_destroy(dgap_class);
> -failed_class:
> - unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
> - return rc;
> + return 0;
> }
>
> -static void dgap_stop(void)
> +/*
> + * dgap_checknode: see if all the necessary info has been supplied for a node
> + * before creating the next node.
> + */
> +static int dgap_checknode(struct cnode *p)
> {
> - unsigned long lock_flags;
> -
> - spin_lock_irqsave(&dgap_poll_lock, lock_flags);
> - dgap_poll_stop = 1;
> - spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
> + switch (p->type) {
> + case LNODE:
> + if (p->u.line.v_speed == 0) {
> + pr_err("line speed not specified");
> + return 1;
> + }
> + return 0;
>
> - del_timer_sync(&dgap_poll_timer);
> + case CNODE:
> + if (p->u.conc.v_speed == 0) {
> + pr_err("concentrator line speed not specified");
> + return 1;
> + }
> + if (p->u.conc.v_nport == 0) {
> + pr_err("number of ports on concentrator not specified");
> + return 1;
> + }
> + if (p->u.conc.v_id == 0) {
> + pr_err("concentrator id letter not specified");
> + return 1;
> + }
> + return 0;
>
> - device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
> - class_destroy(dgap_class);
> - unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
> + case MNODE:
> + if (p->u.module.v_nport == 0) {
> + pr_err("number of ports on EBI module not specified");
> + return 1;
> + }
> + if (p->u.module.v_id == 0) {
> + pr_err("EBI module id letter not specified");
> + return 1;
> + }
> + return 0;
> + }
> + return 0;
> }
>
> -static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
> +/*
> + * Given a board pointer, returns whether we should use interrupts or not.
> + */
> +static uint dgap_config_get_useintr(struct board_t *bd)
> {
> - int rc;
> - struct board_t *brd;
> -
> - if (dgap_numboards >= MAXBOARDS)
> - return -EPERM;
> -
> - rc = pci_enable_device(pdev);
> - if (rc)
> - return -EIO;
> -
> - brd = dgap_found_board(pdev, ent->driver_data, dgap_numboards);
> - if (IS_ERR(brd))
> - return PTR_ERR(brd);
> -
> - rc = dgap_firmware_load(pdev, ent->driver_data, brd);
> - if (rc)
> - goto cleanup_brd;
> -
> - rc = dgap_alloc_flipbuf(brd);
> - if (rc)
> - goto cleanup_brd;
> -
> - rc = dgap_tty_register(brd);
> - if (rc)
> - goto free_flipbuf;
> -
> - rc = dgap_request_irq(brd);
> - if (rc)
> - goto unregister_tty;
> -
> - /*
> - * Do tty device initialization.
> - */
> - rc = dgap_tty_init(brd);
> - if (rc < 0)
> - goto free_irq;
> -
> - rc = dgap_tty_register_ports(brd);
> - if (rc)
> - goto tty_free;
> + struct cnode *p;
>
> - brd->state = BOARD_READY;
> - brd->dpastatus = BD_RUNNING;
> + if (!bd)
> + return 0;
>
> - dgap_board[dgap_numboards++] = brd;
> + for (p = bd->bd_config; p; p = p->next) {
> + if (p->type == INTRNODE) {
> + /*
> + * check for pcxr types.
> + */
> + return p->u.useintr;
> + }
> + }
>
> + /* If not found, then don't turn on interrupts. */
> return 0;
> -
> -tty_free:
> - dgap_tty_free(brd);
> -free_irq:
> - dgap_free_irq(brd);
> -unregister_tty:
> - dgap_tty_unregister(brd);
> -free_flipbuf:
> - dgap_free_flipbuf(brd);
> -cleanup_brd:
> - dgap_cleanup_nodes();
> - dgap_unmap(brd);
> - kfree(brd);
> -
> - return rc;
> -}
> -
> -static void dgap_remove_one(struct pci_dev *dev)
> -{
> - /* Do Nothing */
> }
>
> /*
> - * dgap_cleanup_module()
> - *
> - * Module unload. This is where it all ends.
> + * Given a board pointer, returns whether we turn on altpin or not.
> */
> -static void dgap_cleanup_module(void)
> +static uint dgap_config_get_altpin(struct board_t *bd)
> {
> - unsigned int i;
> - ulong lock_flags;
> -
> - spin_lock_irqsave(&dgap_poll_lock, lock_flags);
> - dgap_poll_stop = 1;
> - spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
> -
> - /* Turn off poller right away. */
> - del_timer_sync(&dgap_poll_timer);
> -
> - dgap_remove_driver_sysfiles(&dgap_driver);
> + struct cnode *p;
>
> - device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
> - class_destroy(dgap_class);
> - unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
> + if (!bd)
> + return 0;
>
> - for (i = 0; i < dgap_numboards; ++i) {
> - dgap_remove_ports_sysfiles(dgap_board[i]);
> - dgap_cleanup_tty(dgap_board[i]);
> - dgap_cleanup_board(dgap_board[i]);
> + for (p = bd->bd_config; p; p = p->next) {
> + if (p->type == ANODE) {
> + /*
> + * check for pcxr types.
> + */
> + return p->u.altpin;
> + }
> }
>
> - dgap_cleanup_nodes();
> -
> - if (dgap_numboards)
> - pci_unregister_driver(&dgap_driver);
> + /* If not found, then don't turn on interrupts. */
> + return 0;
> }
>
> /*
> - * dgap_cleanup_board()
> - *
> - * Free all the memory associated with a board
> + * Given a specific type of board, if found, detached link and
> + * returns the first occurrence in the list.
> */
> -static void dgap_cleanup_board(struct board_t *brd)
> +static struct cnode *dgap_find_config(int type, int bus, int slot)
> {
> - unsigned int i;
> + struct cnode *p, *prev, *prev2, *found;
>
> - if (!brd || brd->magic != DGAP_BOARD_MAGIC)
> - return;
> + p = &dgap_head;
>
> - dgap_free_irq(brd);
> + while (p->next) {
> + prev = p;
> + p = p->next;
>
> - tasklet_kill(&brd->helper_tasklet);
> + if (p->type != BNODE)
> + continue;
>
> - dgap_unmap(brd);
> + if (p->u.board.type != type)
> + continue;
>
> - /* Free all allocated channels structs */
> - for (i = 0; i < MAXPORTS ; i++)
> - kfree(brd->channels[i]);
> + if (p->u.board.v_pcibus &&
> + p->u.board.pcibus != bus)
> + continue;
>
> - kfree(brd->flipbuf);
> - kfree(brd->flipflagbuf);
> + if (p->u.board.v_pcislot &&
> + p->u.board.pcislot != slot)
> + continue;
>
> - dgap_board[brd->boardnum] = NULL;
> + found = p;
> + /*
> + * Keep walking thru the list till we
> + * find the next board.
> + */
> + while (p->next) {
> + prev2 = p;
> + p = p->next;
>
> - kfree(brd);
> + if (p->type != BNODE)
> + continue;
> +
> + /*
> + * Mark the end of our 1 board
> + * chain of configs.
> + */
> + prev2->next = NULL;
> +
> + /*
> + * Link the "next" board to the
> + * previous board, effectively
> + * "unlinking" our board from
> + * the main config.
> + */
> + prev->next = p;
> +
> + return found;
> + }
> + /*
> + * It must be the last board in the list.
> + */
> + prev->next = NULL;
> + return found;
> + }
> + return NULL;
> }
>
> /*
> - * dgap_found_board()
> - *
> - * A board has been found, init it.
> + * Given a board pointer, walks the config link, counting up
> + * all ports user specified should be on the board.
> + * (This does NOT mean they are all actually present right now tho)
> */
> -static struct board_t *dgap_found_board(struct pci_dev *pdev, int id,
> - int boardnum)
> +static uint dgap_config_get_num_prts(struct board_t *bd)
> {
> - struct board_t *brd;
> - unsigned int pci_irq;
> - int i;
> - int ret;
> -
> - /* get the board structure and prep it */
> - brd = kzalloc(sizeof(struct board_t), GFP_KERNEL);
> - if (!brd)
> - return ERR_PTR(-ENOMEM);
> -
> - /* store the info for the board we've found */
> - brd->magic = DGAP_BOARD_MAGIC;
> - brd->boardnum = boardnum;
> - brd->vendor = dgap_pci_tbl[id].vendor;
> - brd->device = dgap_pci_tbl[id].device;
> - brd->pdev = pdev;
> - brd->pci_bus = pdev->bus->number;
> - brd->pci_slot = PCI_SLOT(pdev->devfn);
> - brd->name = dgap_ids[id].name;
> - brd->maxports = dgap_ids[id].maxports;
> - brd->type = dgap_ids[id].config_type;
> - brd->dpatype = dgap_ids[id].dpatype;
> - brd->dpastatus = BD_NOFEP;
> - init_waitqueue_head(&brd->state_wait);
> + int count = 0;
> + struct cnode *p;
>
> - spin_lock_init(&brd->bd_lock);
> + if (!bd)
> + return 0;
>
> - brd->inhibit_poller = FALSE;
> - brd->wait_for_bios = 0;
> - brd->wait_for_fep = 0;
> + for (p = bd->bd_config; p; p = p->next) {
>
> - for (i = 0; i < MAXPORTS; i++)
> - brd->channels[i] = NULL;
> + switch (p->type) {
> + case BNODE:
> + /*
> + * check for pcxr types.
> + */
> + if (p->u.board.type > EPCFE)
> + count += p->u.board.nport;
> + break;
> + case CNODE:
> + count += p->u.conc.nport;
> + break;
> + case MNODE:
> + count += p->u.module.nport;
> + break;
> + }
> + }
> + return count;
> +}
>
> - /* store which card & revision we have */
> - pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
> - pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
> - pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
> +static char *dgap_create_config_string(struct board_t *bd, char *string)
> +{
> + char *ptr = string;
> + struct cnode *p;
> + struct cnode *q;
> + int speed;
>
> - pci_irq = pdev->irq;
> - brd->irq = pci_irq;
> + if (!bd) {
> + *ptr = 0xff;
> + return string;
> + }
>
> - /* get the PCI Base Address Registers */
> + for (p = bd->bd_config; p; p = p->next) {
>
> - /* Xr Jupiter and EPC use BAR 2 */
> - if (brd->device == PCI_DEV_XRJ_DID || brd->device == PCI_DEV_EPCJ_DID) {
> - brd->membase = pci_resource_start(pdev, 2);
> - brd->membase_end = pci_resource_end(pdev, 2);
> - }
> - /* Everyone else uses BAR 0 */
> - else {
> - brd->membase = pci_resource_start(pdev, 0);
> - brd->membase_end = pci_resource_end(pdev, 0);
> - }
> + switch (p->type) {
> + case LNODE:
> + *ptr = '\0';
> + ptr++;
> + *ptr = p->u.line.speed;
> + ptr++;
> + break;
> + case CNODE:
> + /*
> + * Because the EPC/con concentrators can have EM modules
> + * hanging off of them, we have to walk ahead in the
> + * list and keep adding the number of ports on each EM
> + * to the config. UGH!
> + */
> + speed = p->u.conc.speed;
> + q = p->next;
> + if (q && (q->type == MNODE)) {
> + *ptr = (p->u.conc.nport + 0x80);
> + ptr++;
> + p = q;
> + while (q->next && (q->next->type) == MNODE) {
> + *ptr = (q->u.module.nport + 0x80);
> + ptr++;
> + p = q;
> + q = q->next;
> + }
> + *ptr = q->u.module.nport;
> + ptr++;
> + } else {
> + *ptr = p->u.conc.nport;
> + ptr++;
> + }
>
> - if (!brd->membase) {
> - ret = -ENODEV;
> - goto free_brd;
> + *ptr = speed;
> + ptr++;
> + break;
> + }
> }
>
> - if (brd->membase & 1)
> - brd->membase &= ~3;
> - else
> - brd->membase &= ~15;
> -
> - /*
> - * On the PCI boards, there is no IO space allocated
> - * The I/O registers will be in the first 3 bytes of the
> - * upper 2MB of the 4MB memory space. The board memory
> - * will be mapped into the low 2MB of the 4MB memory space
> - */
> - brd->port = brd->membase + PCI_IO_OFFSET;
> - brd->port_end = brd->port + PCI_IO_SIZE;
> + *ptr = 0xff;
> + return string;
> +}
>
> - /*
> - * Special initialization for non-PLX boards
> - */
> - if (brd->device != PCI_DEV_XRJ_DID && brd->device != PCI_DEV_EPCJ_DID) {
> - unsigned short cmd;
> +/*
> + * Parse a configuration file read into memory as a string.
> + */
> +static int dgap_parsefile(char **in)
> +{
> + struct cnode *p, *brd, *line, *conc;
> + int rc;
> + char *s;
> + int linecnt = 0;
>
> - pci_write_config_byte(pdev, 0x40, 0);
> - pci_write_config_byte(pdev, 0x46, 0);
> + p = &dgap_head;
> + brd = line = conc = NULL;
>
> - /* Limit burst length to 2 doubleword transactions */
> - pci_write_config_byte(pdev, 0x42, 1);
> + /* perhaps we are adding to an existing list? */
> + while (p->next)
> + p = p->next;
>
> - /*
> - * Enable IO and mem if not already done.
> - * This was needed for support on Itanium.
> - */
> - pci_read_config_word(pdev, PCI_COMMAND, &cmd);
> - cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
> - pci_write_config_word(pdev, PCI_COMMAND, cmd);
> + /* file must start with a BEGIN */
> + while ((rc = dgap_gettok(in)) != BEGIN) {
> + if (rc == 0) {
> + pr_err("unexpected EOF");
> + return -1;
> + }
> }
>
> - /* init our poll helper tasklet */
> - tasklet_init(&brd->helper_tasklet, dgap_poll_tasklet,
> - (unsigned long) brd);
> + for (; ;) {
> + int board_type = 0;
> + int conc_type = 0;
> + int module_type = 0;
>
> - ret = dgap_remap(brd);
> - if (ret)
> - goto free_brd;
> + rc = dgap_gettok(in);
> + if (rc == 0) {
> + pr_err("unexpected EOF");
> + return -1;
> + }
>
> - pr_info("dgap: board %d: %s (rev %d), irq %ld\n",
> - boardnum, brd->name, brd->rev, brd->irq);
> + switch (rc) {
> + case BEGIN: /* should only be 1 begin */
> + pr_err("unexpected config_begin\n");
> + return -1;
>
> - return brd;
> + case END:
> + return 0;
>
> -free_brd:
> - kfree(brd);
> + case BOARD: /* board info */
> + if (dgap_checknode(p))
> + return -1;
>
> - return ERR_PTR(ret);
> -}
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> + p = p->next;
>
> -static int dgap_request_irq(struct board_t *brd)
> -{
> - int rc;
> + p->type = BNODE;
> + p->u.board.status = kstrdup("No", GFP_KERNEL);
> + line = conc = NULL;
> + brd = p;
> + linecnt = -1;
>
> - if (!brd || brd->magic != DGAP_BOARD_MAGIC)
> - return -ENODEV;
> + board_type = dgap_gettok(in);
> + if (board_type == 0) {
> + pr_err("board !!type not specified");
> + return -1;
> + }
>
> - /*
> - * Set up our interrupt handler if we are set to do interrupts.
> - */
> - if (dgap_config_get_useintr(brd) && brd->irq) {
> + p->u.board.type = board_type;
>
> - rc = request_irq(brd->irq, dgap_intr, IRQF_SHARED, "DGAP", brd);
> + break;
>
> - if (!rc)
> - brd->intr_used = 1;
> - }
> - return 0;
> -}
> + case IO: /* i/o port */
> + if (p->type != BNODE) {
> + pr_err("IO port only valid for boards");
> + return -1;
> + }
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + p->u.board.portstr = kstrdup(s, GFP_KERNEL);
> + if (kstrtol(s, 0, &p->u.board.port)) {
> + pr_err("bad number for IO port");
> + return -1;
> + }
> + p->u.board.v_port = 1;
> + break;
>
> -static void dgap_free_irq(struct board_t *brd)
> -{
> - if (brd->intr_used && brd->irq)
> - free_irq(brd->irq, brd);
> -}
> + case MEM: /* memory address */
> + if (p->type != BNODE) {
> + pr_err("memory address only valid for boards");
> + return -1;
> + }
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + p->u.board.addrstr = kstrdup(s, GFP_KERNEL);
> + if (kstrtoul(s, 0, &p->u.board.addr)) {
> + pr_err("bad number for memory address");
> + return -1;
> + }
> + p->u.board.v_addr = 1;
> + break;
>
> -static int dgap_firmware_load(struct pci_dev *pdev, int card_type,
> - struct board_t *brd)
> -{
> - const struct firmware *fw;
> - char *tmp_ptr;
> - int ret;
> - char *dgap_config_buf;
> + case PCIINFO: /* pci information */
> + if (p->type != BNODE) {
> + pr_err("memory address only valid for boards");
> + return -1;
> + }
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + p->u.board.pcibusstr = kstrdup(s, GFP_KERNEL);
> + if (kstrtoul(s, 0, &p->u.board.pcibus)) {
> + pr_err("bad number for pci bus");
> + return -1;
> + }
> + p->u.board.v_pcibus = 1;
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + p->u.board.pcislotstr = kstrdup(s, GFP_KERNEL);
> + if (kstrtoul(s, 0, &p->u.board.pcislot)) {
> + pr_err("bad number for pci slot");
> + return -1;
> + }
> + p->u.board.v_pcislot = 1;
> + break;
>
> - dgap_get_vpd(brd);
> - dgap_do_reset_board(brd);
> + case METHOD:
> + if (p->type != BNODE) {
> + pr_err("install method only valid for boards");
> + return -1;
> + }
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + p->u.board.method = kstrdup(s, GFP_KERNEL);
> + p->u.board.v_method = 1;
> + break;
>
> - if (fw_info[card_type].conf_name) {
> - ret = request_firmware(&fw, fw_info[card_type].conf_name,
> - &pdev->dev);
> - if (ret) {
> - dev_err(&pdev->dev, "config file %s not found\n",
> - fw_info[card_type].conf_name);
> - return ret;
> - }
> + case STATUS:
> + if (p->type != BNODE) {
> + pr_err("config status only valid for boards");
> + return -1;
> + }
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + p->u.board.status = kstrdup(s, GFP_KERNEL);
> + break;
>
> - dgap_config_buf = kzalloc(fw->size + 1, GFP_KERNEL);
> - if (!dgap_config_buf) {
> - release_firmware(fw);
> - return -ENOMEM;
> - }
> + case NPORTS: /* number of ports */
> + if (p->type == BNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.board.nport)) {
> + pr_err("bad number for number of ports");
> + return -1;
> + }
> + p->u.board.v_nport = 1;
> + } else if (p->type == CNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.conc.nport)) {
> + pr_err("bad number for number of ports");
> + return -1;
> + }
> + p->u.conc.v_nport = 1;
> + } else if (p->type == MNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.module.nport)) {
> + pr_err("bad number for number of ports");
> + return -1;
> + }
> + p->u.module.v_nport = 1;
> + } else {
> + pr_err("nports only valid for concentrators or modules");
> + return -1;
> + }
> + break;
>
> - memcpy(dgap_config_buf, fw->data, fw->size);
> - release_firmware(fw);
> + case ID: /* letter ID used in tty name */
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
>
> - /*
> - * preserve dgap_config_buf
> - * as dgap_parsefile would
> - * otherwise alter it.
> - */
> - tmp_ptr = dgap_config_buf;
> + p->u.board.status = kstrdup(s, GFP_KERNEL);
>
> - if (dgap_parsefile(&tmp_ptr) != 0) {
> - kfree(dgap_config_buf);
> - return -EINVAL;
> - }
> - kfree(dgap_config_buf);
> - }
> + if (p->type == CNODE) {
> + p->u.conc.id = kstrdup(s, GFP_KERNEL);
> + p->u.conc.v_id = 1;
> + } else if (p->type == MNODE) {
> + p->u.module.id = kstrdup(s, GFP_KERNEL);
> + p->u.module.v_id = 1;
> + } else {
> + pr_err("id only valid for concentrators or modules");
> + return -1;
> + }
> + break;
>
> - /*
> - * Match this board to a config the user created for us.
> - */
> - brd->bd_config =
> - dgap_find_config(brd->type, brd->pci_bus, brd->pci_slot);
> + case STARTO: /* start offset of ID */
> + if (p->type == BNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.board.start)) {
> + pr_err("bad number for start of tty count");
> + return -1;
> + }
> + p->u.board.v_start = 1;
> + } else if (p->type == CNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.conc.start)) {
> + pr_err("bad number for start of tty count");
> + return -1;
> + }
> + p->u.conc.v_start = 1;
> + } else if (p->type == MNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.module.start)) {
> + pr_err("bad number for start of tty count");
> + return -1;
> + }
> + p->u.module.v_start = 1;
> + } else {
> + pr_err("start only valid for concentrators or modules");
> + return -1;
> + }
> + break;
>
> - /*
> - * Because the 4 port Xr products share the same PCI ID
> - * as the 8 port Xr products, if we receive a NULL config
> - * back, and this is a PAPORT8 board, retry with a
> - * PAPORT4 attempt as well.
> - */
> - if (brd->type == PAPORT8 && !brd->bd_config)
> - brd->bd_config =
> - dgap_find_config(PAPORT4, brd->pci_bus, brd->pci_slot);
> + case TTYN: /* tty name prefix */
> + if (dgap_checknode(p))
> + return -1;
>
> - if (!brd->bd_config) {
> - dev_err(&pdev->dev, "No valid configuration found\n");
> - return -EINVAL;
> - }
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - if (fw_info[card_type].bios_name) {
> - ret = request_firmware(&fw, fw_info[card_type].bios_name,
> - &pdev->dev);
> - if (ret) {
> - dev_err(&pdev->dev, "bios file %s not found\n",
> - fw_info[card_type].bios_name);
> - return ret;
> - }
> - dgap_do_bios_load(brd, fw->data, fw->size);
> - release_firmware(fw);
> + p = p->next;
> + p->type = TNODE;
>
> - /* Wait for BIOS to test board... */
> - ret = dgap_test_bios(brd);
> - if (ret)
> - return ret;
> - }
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpeced end of file");
> + return -1;
> + }
> + p->u.ttyname = kstrdup(s, GFP_KERNEL);
> + if (!p->u.ttyname)
> + return -1;
>
> - if (fw_info[card_type].fep_name) {
> - ret = request_firmware(&fw, fw_info[card_type].fep_name,
> - &pdev->dev);
> - if (ret) {
> - dev_err(&pdev->dev, "dgap: fep file %s not found\n",
> - fw_info[card_type].fep_name);
> - return ret;
> - }
> - dgap_do_fep_load(brd, fw->data, fw->size);
> - release_firmware(fw);
> + break;
>
> - /* Wait for FEP to load on board... */
> - ret = dgap_test_fep(brd);
> - if (ret)
> - return ret;
> - }
> + case CU: /* cu name prefix */
> + if (dgap_checknode(p))
> + return -1;
>
> -#ifdef DIGI_CONCENTRATORS_SUPPORTED
> - /*
> - * If this is a CX or EPCX, we need to see if the firmware
> - * is requesting a concentrator image from us.
> - */
> - if ((bd->type == PCX) || (bd->type == PEPC)) {
> - chk_addr = (u16 *) (vaddr + DOWNREQ);
> - /* Nonzero if FEP is requesting concentrator image. */
> - check = readw(chk_addr);
> - vaddr = brd->re_map_membase;
> - }
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - if (fw_info[card_type].con_name && check && vaddr) {
> - ret = request_firmware(&fw, fw_info[card_type].con_name,
> - &pdev->dev);
> - if (ret) {
> - dev_err(&pdev->dev, "conc file %s not found\n",
> - fw_info[card_type].con_name);
> - return ret;
> - }
> - /* Put concentrator firmware loading code here */
> - offset = readw((u16 *) (vaddr + DOWNREQ));
> - memcpy_toio(offset, fw->data, fw->size);
> + p = p->next;
> + p->type = CUNODE;
>
> - dgap_do_conc_load(brd, (char *)fw->data, fw->size)
> - release_firmware(fw);
> - }
> -#endif
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpeced end of file");
> + return -1;
> + }
> + p->u.cuname = kstrdup(s, GFP_KERNEL);
> + if (!p->u.cuname)
> + return -1;
>
> - return 0;
> -}
> + break;
>
> -/*
> - * Remap PCI memory.
> - */
> -static int dgap_remap(struct board_t *brd)
> -{
> - if (!brd || brd->magic != DGAP_BOARD_MAGIC)
> - return -EIO;
> + case LINE: /* line information */
> + if (dgap_checknode(p))
> + return -1;
> + if (!brd) {
> + pr_err("must specify board before line info");
> + return -1;
> + }
> + switch (brd->u.board.type) {
> + case PPCM:
> + pr_err("line not valid for PC/em");
> + return -1;
> + }
>
> - if (!request_mem_region(brd->membase, 0x200000, "dgap"))
> - return -ENOMEM;
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000,
> - "dgap")) {
> - release_mem_region(brd->membase, 0x200000);
> - return -ENOMEM;
> - }
> + p = p->next;
> + p->type = LNODE;
> + conc = NULL;
> + line = p;
> + linecnt++;
> + break;
>
> - brd->re_map_membase = ioremap(brd->membase, 0x200000);
> - if (!brd->re_map_membase) {
> - release_mem_region(brd->membase, 0x200000);
> - release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
> - return -ENOMEM;
> - }
> + case CONC: /* concentrator information */
> + if (dgap_checknode(p))
> + return -1;
> + if (!line) {
> + pr_err("must specify line info before concentrator");
> + return -1;
> + }
>
> - brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000);
> - if (!brd->re_map_port) {
> - release_mem_region(brd->membase, 0x200000);
> - release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
> - iounmap(brd->re_map_membase);
> - return -ENOMEM;
> - }
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - return 0;
> -}
> + p = p->next;
> + p->type = CNODE;
> + conc = p;
>
> -static void dgap_unmap(struct board_t *brd)
> -{
> - iounmap(brd->re_map_port);
> - iounmap(brd->re_map_membase);
> - release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
> - release_mem_region(brd->membase, 0x200000);
> -}
> -/*****************************************************************************
> -*
> -* Function:
> -*
> -* dgap_poll_handler
> -*
> -* Author:
> -*
> -* Scott H Kilau
> -*
> -* Parameters:
> -*
> -* dummy -- ignored
> -*
> -* Return Values:
> -*
> -* none
> -*
> -* Description:
> -*
> -* As each timer expires, it determines (a) whether the "transmit"
> -* waiter needs to be woken up, and (b) whether the poller needs to
> -* be rescheduled.
> -*
> -******************************************************************************/
> + if (linecnt)
> + brd->u.board.conc2++;
> + else
> + brd->u.board.conc1++;
>
> -static void dgap_poll_handler(ulong dummy)
> -{
> - unsigned int i;
> - struct board_t *brd;
> - unsigned long lock_flags;
> - ulong new_time;
> + conc_type = dgap_gettok(in);
> + if (conc_type == 0 || conc_type != CX ||
> + conc_type != EPC) {
> + pr_err("failed to set a type of concentratros");
> + return -1;
> + }
>
> - dgap_poll_counter++;
> + p->u.conc.type = conc_type;
>
> - /*
> - * Do not start the board state machine until
> - * driver tells us its up and running, and has
> - * everything it needs.
> - */
> - if (dgap_driver_state != DRIVER_READY)
> - goto schedule_poller;
> + break;
>
> - /*
> - * If we have just 1 board, or the system is not SMP,
> - * then use the typical old style poller.
> - * Otherwise, use our new tasklet based poller, which should
> - * speed things up for multiple boards.
> - */
> - if ((dgap_numboards == 1) || (num_online_cpus() <= 1)) {
> - for (i = 0; i < dgap_numboards; i++) {
> + case MOD: /* EBI module */
> + if (dgap_checknode(p))
> + return -1;
> + if (!brd) {
> + pr_err("must specify board info before EBI modules");
> + return -1;
> + }
> + switch (brd->u.board.type) {
> + case PPCM:
> + linecnt = 0;
> + break;
> + default:
> + if (!conc) {
> + pr_err("must specify concentrator info before EBI module");
> + return -1;
> + }
> + }
>
> - brd = dgap_board[i];
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - if (brd->state == BOARD_FAILED)
> - continue;
> - if (!brd->intr_running)
> - /* Call the real board poller directly */
> - dgap_poll_tasklet((unsigned long) brd);
> - }
> - } else {
> - /*
> - * Go thru each board, kicking off a
> - * tasklet for each if needed
> - */
> - for (i = 0; i < dgap_numboards; i++) {
> - brd = dgap_board[i];
> + p = p->next;
> + p->type = MNODE;
>
> - /*
> - * Attempt to grab the board lock.
> - *
> - * If we can't get it, no big deal, the next poll
> - * will get it. Basically, I just really don't want
> - * to spin in here, because I want to kick off my
> - * tasklets as fast as I can, and then get out the
> - * poller.
> - */
> - if (!spin_trylock(&brd->bd_lock))
> - continue;
> + if (linecnt)
> + brd->u.board.module2++;
> + else
> + brd->u.board.module1++;
>
> - /*
> - * If board is in a failed state, don't bother
> - * scheduling a tasklet
> - */
> - if (brd->state == BOARD_FAILED) {
> - spin_unlock(&brd->bd_lock);
> - continue;
> + module_type = dgap_gettok(in);
> + if (module_type == 0 || module_type != PORTS ||
> + module_type != MODEM) {
> + pr_err("failed to set a type of module");
> + return -1;
> }
>
> - /* Schedule a poll helper task */
> - if (!brd->intr_running)
> - tasklet_schedule(&brd->helper_tasklet);
> -
> - /*
> - * Can't do DGAP_UNLOCK here, as we don't have
> - * lock_flags because we did a trylock above.
> - */
> - spin_unlock(&brd->bd_lock);
> - }
> - }
> + p->u.module.type = module_type;
>
> -schedule_poller:
> + break;
>
> - /*
> - * Schedule ourself back at the nominal wakeup interval.
> - */
> - spin_lock_irqsave(&dgap_poll_lock, lock_flags);
> - dgap_poll_time += dgap_jiffies_from_ms(dgap_poll_tick);
> + case CABLE:
> + if (p->type == LNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + p->u.line.cable = kstrdup(s, GFP_KERNEL);
> + p->u.line.v_cable = 1;
> + }
> + break;
>
> - new_time = dgap_poll_time - jiffies;
> + case SPEED: /* sync line speed indication */
> + if (p->type == LNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.line.speed)) {
> + pr_err("bad number for line speed");
> + return -1;
> + }
> + p->u.line.v_speed = 1;
> + } else if (p->type == CNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.conc.speed)) {
> + pr_err("bad number for line speed");
> + return -1;
> + }
> + p->u.conc.v_speed = 1;
> + } else {
> + pr_err("speed valid only for lines or concentrators.");
> + return -1;
> + }
> + break;
>
> - if ((ulong) new_time >= 2 * dgap_poll_tick) {
> - dgap_poll_time =
> - jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
> - }
> + case CONNECT:
> + if (p->type == CNODE) {
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + p->u.conc.connect = kstrdup(s, GFP_KERNEL);
> + p->u.conc.v_connect = 1;
> + }
> + break;
> + case PRINT: /* transparent print name prefix */
> + if (dgap_checknode(p))
> + return -1;
>
> - dgap_poll_timer.function = dgap_poll_handler;
> - dgap_poll_timer.data = 0;
> - dgap_poll_timer.expires = dgap_poll_time;
> - spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - if (!dgap_poll_stop)
> - add_timer(&dgap_poll_timer);
> -}
> + p = p->next;
> + p->type = PNODE;
>
> -/*
> - * dgap_intr()
> - *
> - * Driver interrupt handler.
> - */
> -static irqreturn_t dgap_intr(int irq, void *voidbrd)
> -{
> - struct board_t *brd = (struct board_t *) voidbrd;
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpeced end of file");
> + return -1;
> + }
> + p->u.printname = kstrdup(s, GFP_KERNEL);
> + if (!p->u.printname)
> + return -1;
>
> - if (!brd)
> - return IRQ_NONE;
> + break;
>
> - /*
> - * Check to make sure its for us.
> - */
> - if (brd->magic != DGAP_BOARD_MAGIC)
> - return IRQ_NONE;
> + case CMAJOR: /* major number */
> + if (dgap_checknode(p))
> + return -1;
>
> - brd->intr_count++;
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - /*
> - * Schedule tasklet to run at a better time.
> - */
> - tasklet_schedule(&brd->helper_tasklet);
> - return IRQ_HANDLED;
> -}
> + p = p->next;
> + p->type = JNODE;
>
> -/*
> - * dgap_init_globals()
> - *
> - * This is where we initialize the globals from the static insmod
> - * configuration variables. These are declared near the head of
> - * this file.
> - */
> -static void dgap_init_globals(void)
> -{
> - unsigned int i;
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.majornumber)) {
> + pr_err("bad number for major number");
> + return -1;
> + }
> + break;
>
> - for (i = 0; i < MAXBOARDS; i++)
> - dgap_board[i] = NULL;
> + case ALTPIN: /* altpin setting */
> + if (dgap_checknode(p))
> + return -1;
>
> - init_timer(&dgap_poll_timer);
> -}
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> -/************************************************************************
> - *
> - * TTY Initialization/Cleanup Functions
> - *
> - ************************************************************************/
> + p = p->next;
> + p->type = ANODE;
>
> -/*
> - * dgap_tty_register()
> - *
> - * Init the tty subsystem for this board.
> - */
> -static int dgap_tty_register(struct board_t *brd)
> -{
> - int rc;
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.altpin)) {
> + pr_err("bad number for altpin");
> + return -1;
> + }
> + break;
>
> - brd->serial_driver = tty_alloc_driver(MAXPORTS, 0);
> - if (IS_ERR(brd->serial_driver))
> - return PTR_ERR(brd->serial_driver);
> + case USEINTR: /* enable interrupt setting */
> + if (dgap_checknode(p))
> + return -1;
>
> - snprintf(brd->serial_name, MAXTTYNAMELEN, "tty_dgap_%d_",
> - brd->boardnum);
> - brd->serial_driver->name = brd->serial_name;
> - brd->serial_driver->name_base = 0;
> - brd->serial_driver->major = 0;
> - brd->serial_driver->minor_start = 0;
> - brd->serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
> - brd->serial_driver->subtype = SERIAL_TYPE_NORMAL;
> - brd->serial_driver->init_termios = dgap_default_termios;
> - brd->serial_driver->driver_name = DRVSTR;
> - brd->serial_driver->flags = (TTY_DRIVER_REAL_RAW |
> - TTY_DRIVER_DYNAMIC_DEV |
> - TTY_DRIVER_HARDWARE_BREAK);
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - /* The kernel wants space to store pointers to tty_structs */
> - brd->serial_driver->ttys =
> - kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
> - if (!brd->serial_driver->ttys) {
> - rc = -ENOMEM;
> - goto free_serial_drv;
> - }
> + p = p->next;
> + p->type = INTRNODE;
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.useintr)) {
> + pr_err("bad number for useintr");
> + return -1;
> + }
> + break;
>
> - /*
> - * Entry points for driver. Called by the kernel from
> - * tty_io.c and n_tty.c.
> - */
> - tty_set_operations(brd->serial_driver, &dgap_tty_ops);
> + case TTSIZ: /* size of tty structure */
> + if (dgap_checknode(p))
> + return -1;
>
> - /*
> - * If we're doing transparent print, we have to do all of the above
> - * again, separately so we don't get the LD confused about what major
> - * we are when we get into the dgap_tty_open() routine.
> - */
> - brd->print_driver = tty_alloc_driver(MAXPORTS, 0);
> - if (IS_ERR(brd->print_driver)) {
> - rc = PTR_ERR(brd->print_driver);
> - goto free_serial_drv;
> - }
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - snprintf(brd->print_name, MAXTTYNAMELEN, "pr_dgap_%d_",
> - brd->boardnum);
> - brd->print_driver->name = brd->print_name;
> - brd->print_driver->name_base = 0;
> - brd->print_driver->major = 0;
> - brd->print_driver->minor_start = 0;
> - brd->print_driver->type = TTY_DRIVER_TYPE_SERIAL;
> - brd->print_driver->subtype = SERIAL_TYPE_NORMAL;
> - brd->print_driver->init_termios = dgap_default_termios;
> - brd->print_driver->driver_name = DRVSTR;
> - brd->print_driver->flags = (TTY_DRIVER_REAL_RAW |
> - TTY_DRIVER_DYNAMIC_DEV |
> - TTY_DRIVER_HARDWARE_BREAK);
> + p = p->next;
> + p->type = TSNODE;
>
> - /* The kernel wants space to store pointers to tty_structs */
> - brd->print_driver->ttys =
> - kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
> - if (!brd->print_driver->ttys) {
> - rc = -ENOMEM;
> - goto free_print_drv;
> - }
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.ttysize)) {
> + pr_err("bad number for ttysize");
> + return -1;
> + }
> + break;
>
> - /*
> - * Entry points for driver. Called by the kernel from
> - * tty_io.c and n_tty.c.
> - */
> - tty_set_operations(brd->print_driver, &dgap_tty_ops);
> + case CHSIZ: /* channel structure size */
> + if (dgap_checknode(p))
> + return -1;
>
> - /* Register tty devices */
> - rc = tty_register_driver(brd->serial_driver);
> - if (rc < 0)
> - goto free_print_drv;
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - /* Register Transparent Print devices */
> - rc = tty_register_driver(brd->print_driver);
> - if (rc < 0)
> - goto unregister_serial_drv;
> + p = p->next;
> + p->type = CSNODE;
>
> - dgap_boards_by_major[brd->serial_driver->major] = brd;
> - brd->dgap_serial_major = brd->serial_driver->major;
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.chsize)) {
> + pr_err("bad number for chsize");
> + return -1;
> + }
> + break;
>
> - dgap_boards_by_major[brd->print_driver->major] = brd;
> - brd->dgap_transparent_print_major = brd->print_driver->major;
> + case BSSIZ: /* board structure size */
> + if (dgap_checknode(p))
> + return -1;
>
> - return 0;
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> -unregister_serial_drv:
> - tty_unregister_driver(brd->serial_driver);
> -free_print_drv:
> - put_tty_driver(brd->print_driver);
> -free_serial_drv:
> - put_tty_driver(brd->serial_driver);
> + p = p->next;
> + p->type = BSNODE;
>
> - return rc;
> -}
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.bssize)) {
> + pr_err("bad number for bssize");
> + return -1;
> + }
> + break;
>
> -static void dgap_tty_unregister(struct board_t *brd)
> -{
> - tty_unregister_driver(brd->print_driver);
> - tty_unregister_driver(brd->serial_driver);
> - put_tty_driver(brd->print_driver);
> - put_tty_driver(brd->serial_driver);
> -}
> + case UNTSIZ: /* sched structure size */
> + if (dgap_checknode(p))
> + return -1;
>
> -/*
> - * dgap_tty_init()
> - *
> - * Init the tty subsystem. Called once per board after board has been
> - * downloaded and init'ed.
> - */
> -static int dgap_tty_init(struct board_t *brd)
> -{
> - int i;
> - int tlw;
> - uint true_count;
> - u8 __iomem *vaddr;
> - u8 modem;
> - struct channel_t *ch;
> - struct bs_t __iomem *bs;
> - struct cm_t __iomem *cm;
> - int ret;
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - /*
> - * Initialize board structure elements.
> - */
> + p = p->next;
> + p->type = USNODE;
>
> - vaddr = brd->re_map_membase;
> - true_count = readw((vaddr + NCHAN));
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.unsize)) {
> + pr_err("bad number for schedsize");
> + return -1;
> + }
> + break;
>
> - brd->nasync = dgap_config_get_num_prts(brd);
> + case F2SIZ: /* f2200 structure size */
> + if (dgap_checknode(p))
> + return -1;
>
> - if (!brd->nasync)
> - brd->nasync = brd->maxports;
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - if (brd->nasync > brd->maxports)
> - brd->nasync = brd->maxports;
> + p = p->next;
> + p->type = FSNODE;
>
> - if (true_count != brd->nasync) {
> - dev_warn(&brd->pdev->dev,
> - "%s configured for %d ports, has %d ports.\n",
> - brd->name, brd->nasync, true_count);
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.f2size)) {
> + pr_err("bad number for f2200size");
> + return -1;
> + }
> + break;
>
> - if ((brd->type == PPCM) &&
> - (true_count == 64 || true_count == 0)) {
> - dev_warn(&brd->pdev->dev,
> - "Please make SURE the EBI cable running from the card\n");
> - dev_warn(&brd->pdev->dev,
> - "to each EM module is plugged into EBI IN!\n");
> - }
> + case VPSIZ: /* vpix structure size */
> + if (dgap_checknode(p))
> + return -1;
>
> - brd->nasync = true_count;
> + p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> + if (!p->next)
> + return -1;
>
> - /* If no ports, don't bother going any further */
> - if (!brd->nasync) {
> - brd->state = BOARD_FAILED;
> - brd->dpastatus = BD_NOFEP;
> - return -EIO;
> - }
> - }
> + p = p->next;
> + p->type = VSNODE;
>
> - /*
> - * Allocate channel memory that might not have been allocated
> - * when the driver was first loaded.
> - */
> - for (i = 0; i < brd->nasync; i++) {
> - brd->channels[i] =
> - kzalloc(sizeof(struct channel_t), GFP_KERNEL);
> - if (!brd->channels[i]) {
> - ret = -ENOMEM;
> - goto free_chan;
> + s = dgap_getword(in);
> + if (!s) {
> + pr_err("unexpected end of file");
> + return -1;
> + }
> + if (kstrtol(s, 0, &p->u.vpixsize)) {
> + pr_err("bad number for vpixsize");
> + return -1;
> + }
> + break;
> }
> }
> +}
>
> - ch = brd->channels[0];
> - vaddr = brd->re_map_membase;
> +static void dgap_cleanup_nodes(void)
> +{
> + struct cnode *p;
>
> - bs = (struct bs_t __iomem *) ((ulong) vaddr + CHANBUF);
> - cm = (struct cm_t __iomem *) ((ulong) vaddr + CMDBUF);
> + p = &dgap_head;
>
> - brd->bd_bs = bs;
> + while (p) {
> + struct cnode *tmp = p->next;
>
> - /* Set up channel variables */
> - for (i = 0; i < brd->nasync; i++, ch = brd->channels[i], bs++) {
> + if (p->type == NULLNODE) {
> + p = tmp;
> + continue;
> + }
>
> - spin_lock_init(&ch->ch_lock);
> + switch (p->type) {
> + case BNODE:
> + kfree(p->u.board.portstr);
> + kfree(p->u.board.addrstr);
> + kfree(p->u.board.pcibusstr);
> + kfree(p->u.board.pcislotstr);
> + kfree(p->u.board.method);
> + break;
> + case CNODE:
> + kfree(p->u.conc.id);
> + kfree(p->u.conc.connect);
> + break;
> + case MNODE:
> + kfree(p->u.module.id);
> + break;
> + case TNODE:
> + kfree(p->u.ttyname);
> + break;
> + case CUNODE:
> + kfree(p->u.cuname);
> + break;
> + case LNODE:
> + kfree(p->u.line.cable);
> + break;
> + case PNODE:
> + kfree(p->u.printname);
> + break;
> + }
>
> - /* Store all our magic numbers */
> - ch->magic = DGAP_CHANNEL_MAGIC;
> - ch->ch_tun.magic = DGAP_UNIT_MAGIC;
> - ch->ch_tun.un_type = DGAP_SERIAL;
> - ch->ch_tun.un_ch = ch;
> - ch->ch_tun.un_dev = i;
> + kfree(p->u.board.status);
> + kfree(p);
> + p = tmp;
> + }
> +}
>
> - ch->ch_pun.magic = DGAP_UNIT_MAGIC;
> - ch->ch_pun.un_type = DGAP_PRINT;
> - ch->ch_pun.un_ch = ch;
> - ch->ch_pun.un_dev = i;
> +/*
> + * Retrives the current custom baud rate from FEP memory,
> + * and returns it back to the user.
> + * Returns 0 on error.
> + */
> +static uint dgap_get_custom_baud(struct channel_t *ch)
> +{
> + u8 __iomem *vaddr;
> + ulong offset;
> + uint value;
>
> - ch->ch_vaddr = vaddr;
> - ch->ch_bs = bs;
> - ch->ch_cm = cm;
> - ch->ch_bd = brd;
> - ch->ch_portnum = i;
> - ch->ch_digi = dgap_digi_init;
> + if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> + return 0;
>
> - /*
> - * Set up digi dsr and dcd bits based on altpin flag.
> - */
> - if (dgap_config_get_altpin(brd)) {
> - ch->ch_dsr = DM_CD;
> - ch->ch_cd = DM_DSR;
> - ch->ch_digi.digi_flags |= DIGI_ALTPIN;
> - } else {
> - ch->ch_cd = DM_CD;
> - ch->ch_dsr = DM_DSR;
> - }
> + if (!ch->ch_bd || ch->ch_bd->magic != DGAP_BOARD_MAGIC)
> + return 0;
>
> - ch->ch_taddr = vaddr + (ioread16(&(ch->ch_bs->tx_seg)) << 4);
> - ch->ch_raddr = vaddr + (ioread16(&(ch->ch_bs->rx_seg)) << 4);
> - ch->ch_tx_win = 0;
> - ch->ch_rx_win = 0;
> - ch->ch_tsize = readw(&(ch->ch_bs->tx_max)) + 1;
> - ch->ch_rsize = readw(&(ch->ch_bs->rx_max)) + 1;
> - ch->ch_tstart = 0;
> - ch->ch_rstart = 0;
> + if (!(ch->ch_bd->bd_flags & BD_FEP5PLUS))
> + return 0;
>
> - /*
> - * Set queue water marks, interrupt mask,
> - * and general tty parameters.
> - */
> - tlw = ch->ch_tsize >= 2000 ? ((ch->ch_tsize * 5) / 8) :
> - ch->ch_tsize / 2;
> - ch->ch_tlw = tlw;
> + vaddr = ch->ch_bd->re_map_membase;
>
> - dgap_cmdw(ch, STLOW, tlw, 0);
> + if (!vaddr)
> + return 0;
>
> - dgap_cmdw(ch, SRLOW, ch->ch_rsize / 2, 0);
> + /*
> + * Go get from fep mem, what the fep
> + * believes the custom baud rate is.
> + */
> + offset = (ioread16(vaddr + ECS_SEG) << 4) + (ch->ch_portnum * 0x28)
> + + LINE_SPEED;
>
> - dgap_cmdw(ch, SRHIGH, 7 * ch->ch_rsize / 8, 0);
> + value = readw(vaddr + offset);
> + return value;
> +}
>
> - ch->ch_mistat = readb(&(ch->ch_bs->m_stat));
> +/*
> + * Remap PCI memory.
> + */
> +static int dgap_remap(struct board_t *brd)
> +{
> + if (!brd || brd->magic != DGAP_BOARD_MAGIC)
> + return -EIO;
>
> - init_waitqueue_head(&ch->ch_flags_wait);
> - init_waitqueue_head(&ch->ch_tun.un_flags_wait);
> - init_waitqueue_head(&ch->ch_pun.un_flags_wait);
> + if (!request_mem_region(brd->membase, 0x200000, "dgap"))
> + return -ENOMEM;
>
> - /* Turn on all modem interrupts for now */
> - modem = (DM_CD | DM_DSR | DM_CTS | DM_RI);
> - writeb(modem, &(ch->ch_bs->m_int));
> + if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000,
> + "dgap")) {
> + release_mem_region(brd->membase, 0x200000);
> + return -ENOMEM;
> + }
>
> - /*
> - * Set edelay to 0 if interrupts are turned on,
> - * otherwise set edelay to the usual 100.
> - */
> - if (brd->intr_used)
> - writew(0, &(ch->ch_bs->edelay));
> - else
> - writew(100, &(ch->ch_bs->edelay));
> + brd->re_map_membase = ioremap(brd->membase, 0x200000);
> + if (!brd->re_map_membase) {
> + release_mem_region(brd->membase, 0x200000);
> + release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
> + return -ENOMEM;
> + }
>
> - writeb(1, &(ch->ch_bs->idata));
> + brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000);
> + if (!brd->re_map_port) {
> + release_mem_region(brd->membase, 0x200000);
> + release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
> + iounmap(brd->re_map_membase);
> + return -ENOMEM;
> }
>
> return 0;
> -
> -free_chan:
> - while (--i >= 0) {
> - kfree(brd->channels[i]);
> - brd->channels[i] = NULL;
> - }
> - return ret;
> }
>
> -/*
> - * dgap_tty_free()
> - *
> - * Free the channles which are allocated in dgap_tty_init().
> - */
> -static void dgap_tty_free(struct board_t *brd)
> +static void dgap_unmap(struct board_t *brd)
> {
> - int i;
> -
> - for (i = 0; i < brd->nasync; i++)
> - kfree(brd->channels[i]);
> + iounmap(brd->re_map_port);
> + iounmap(brd->re_map_membase);
> + release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
> + release_mem_region(brd->membase, 0x200000);
> }
> +
> /*
> - * dgap_cleanup_tty()
> + * dgap_parity_scan()
> *
> - * Uninitialize the TTY portion of this driver. Free all memory and
> - * resources.
> + * Convert the FEP5 way of reporting parity errors and breaks into
> + * the Linux line discipline way.
> */
> -static void dgap_cleanup_tty(struct board_t *brd)
> +static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf,
> + unsigned char *fbuf, int *len)
> {
> - struct device *dev;
> - unsigned int i;
> + int l = *len;
> + int count = 0;
> + unsigned char *in, *cout, *fout;
> + unsigned char c;
>
> - dgap_boards_by_major[brd->serial_driver->major] = NULL;
> - brd->dgap_serial_major = 0;
> - for (i = 0; i < brd->nasync; i++) {
> - tty_port_destroy(&brd->serial_ports[i]);
> - dev = brd->channels[i]->ch_tun.un_sysfs;
> - dgap_remove_tty_sysfs(dev);
> - tty_unregister_device(brd->serial_driver, i);
> - }
> - tty_unregister_driver(brd->serial_driver);
> - put_tty_driver(brd->serial_driver);
> - kfree(brd->serial_ports);
> + in = cbuf;
> + cout = cbuf;
> + fout = fbuf;
>
> - dgap_boards_by_major[brd->print_driver->major] = NULL;
> - brd->dgap_transparent_print_major = 0;
> - for (i = 0; i < brd->nasync; i++) {
> - tty_port_destroy(&brd->printer_ports[i]);
> - dev = brd->channels[i]->ch_pun.un_sysfs;
> - dgap_remove_tty_sysfs(dev);
> - tty_unregister_device(brd->print_driver, i);
> + if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> + return;
> +
> + while (l--) {
> + c = *in++;
> + switch (ch->pscan_state) {
> + default:
> + /* reset to sanity and fall through */
> + ch->pscan_state = 0;
> +
> + case 0:
> + /* No FF seen yet */
> + if (c == (unsigned char) '\377')
> + /* delete this character from stream */
> + ch->pscan_state = 1;
> + else {
> + *cout++ = c;
> + *fout++ = TTY_NORMAL;
> + count += 1;
> + }
> + break;
> +
> + case 1:
> + /* first FF seen */
> + if (c == (unsigned char) '\377') {
> + /* doubled ff, transform to single ff */
> + *cout++ = c;
> + *fout++ = TTY_NORMAL;
> + count += 1;
> + ch->pscan_state = 0;
> + } else {
> + /* save value examination in next state */
> + ch->pscan_savechar = c;
> + ch->pscan_state = 2;
> + }
> + break;
> +
> + case 2:
> + /* third character of ff sequence */
> +
> + *cout++ = c;
> +
> + if (ch->pscan_savechar == 0x0) {
> +
> + if (c == 0x0) {
> + ch->ch_err_break++;
> + *fout++ = TTY_BREAK;
> + } else {
> + ch->ch_err_parity++;
> + *fout++ = TTY_PARITY;
> + }
> + }
> +
> + count += 1;
> + ch->pscan_state = 0;
> + }
> }
> - tty_unregister_driver(brd->print_driver);
> - put_tty_driver(brd->print_driver);
> - kfree(brd->printer_ports);
> + *len = count;
> }
>
> /*=======================================================================
> @@ -1750,6 +1718,33 @@ static void dgap_input(struct channel_t *ch)
>
> }
>
> +static void dgap_write_wakeup(struct board_t *bd, struct channel_t *ch,
> + struct un_t *un, u32 mask,
> + unsigned long *irq_flags1,
> + unsigned long *irq_flags2)
> +{
> + if (!(un->un_flags & mask))
> + return;
> +
> + un->un_flags &= ~mask;
> +
> + if (!(un->un_flags & UN_ISOPEN))
> + return;
> +
> + if ((un->un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
> + un->un_tty->ldisc->ops->write_wakeup) {
> + spin_unlock_irqrestore(&ch->ch_lock, *irq_flags2);
> + spin_unlock_irqrestore(&bd->bd_lock, *irq_flags1);
> +
> + (un->un_tty->ldisc->ops->write_wakeup)(un->un_tty);
> +
> + spin_lock_irqsave(&bd->bd_lock, *irq_flags1);
> + spin_lock_irqsave(&ch->ch_lock, *irq_flags2);
> + }
> + wake_up_interruptible(&un->un_tty->write_wait);
> + wake_up_interruptible(&un->un_flags_wait);
> +}
> +
> /************************************************************************
> * Determines when CARRIER changes state and takes appropriate
> * action.
> @@ -1864,163 +1859,1207 @@ static void dgap_carrier(struct channel_t *ch)
> ch->ch_flags &= ~CH_CD;
> }
>
> -/************************************************************************
> +/*=======================================================================
> *
> - * TTY Entry points and helper functions
> + * dgap_event - FEP to host event processing routine.
> *
> - ************************************************************************/
> -
> -/*
> - * dgap_tty_open()
> + * bd - Board of current event.
> *
> - */
> -static int dgap_tty_open(struct tty_struct *tty, struct file *file)
> + *=======================================================================*/
> +static int dgap_event(struct board_t *bd)
> {
> - struct board_t *brd;
> struct channel_t *ch;
> - struct un_t *un;
> - struct bs_t __iomem *bs;
> - uint major;
> - uint minor;
> - int rc;
> ulong lock_flags;
> ulong lock_flags2;
> - u16 head;
> + struct bs_t __iomem *bs;
> + u8 __iomem *event;
> + u8 __iomem *vaddr;
> + struct ev_t __iomem *eaddr;
> + uint head;
> + uint tail;
> + int port;
> + int reason;
> + int modem;
> + int b1;
>
> - major = MAJOR(tty_devnum(tty));
> - minor = MINOR(tty_devnum(tty));
> + if (!bd || bd->magic != DGAP_BOARD_MAGIC)
> + return -EIO;
>
> - if (major > 255)
> + spin_lock_irqsave(&bd->bd_lock, lock_flags);
> +
> + vaddr = bd->re_map_membase;
> +
> + if (!vaddr) {
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> return -EIO;
> + }
>
> - /* Get board pointer from our array of majors we have allocated */
> - brd = dgap_boards_by_major[major];
> - if (!brd)
> + eaddr = (struct ev_t __iomem *) (vaddr + EVBUF);
> +
> + /* Get our head and tail */
> + head = readw(&(eaddr->ev_head));
> + tail = readw(&(eaddr->ev_tail));
> +
> + /*
> + * Forget it if pointers out of range.
> + */
> +
> + if (head >= EVMAX - EVSTART || tail >= EVMAX - EVSTART ||
> + (head | tail) & 03) {
> + /* Let go of board lock */
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> return -EIO;
> + }
>
> /*
> - * If board is not yet up to a state of READY, go to
> - * sleep waiting for it to happen or they cancel the open.
> + * Loop to process all the events in the buffer.
> */
> - rc = wait_event_interruptible(brd->state_wait,
> - (brd->state & BOARD_READY));
> + while (tail != head) {
>
> - if (rc)
> - return rc;
> + /*
> + * Get interrupt information.
> + */
>
> - spin_lock_irqsave(&brd->bd_lock, lock_flags);
> + event = bd->re_map_membase + tail + EVSTART;
>
> - /* The wait above should guarantee this cannot happen */
> - if (brd->state != BOARD_READY) {
> - spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> - return -EIO;
> + port = ioread8(event);
> + reason = ioread8(event + 1);
> + modem = ioread8(event + 2);
> + b1 = ioread8(event + 3);
> +
> + /*
> + * Make sure the interrupt is valid.
> + */
> + if (port >= bd->nasync)
> + goto next;
> +
> + if (!(reason & (IFMODEM | IFBREAK | IFTLW | IFTEM | IFDATA)))
> + goto next;
> +
> + ch = bd->channels[port];
> +
> + if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> + goto next;
> +
> + /*
> + * If we have made it here, the event was valid.
> + * Lock down the channel.
> + */
> + spin_lock_irqsave(&ch->ch_lock, lock_flags2);
> +
> + bs = ch->ch_bs;
> +
> + if (!bs) {
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> + goto next;
> + }
> +
> + /*
> + * Process received data.
> + */
> + if (reason & IFDATA) {
> +
> + /*
> + * ALL LOCKS *MUST* BE DROPPED BEFORE CALLING INPUT!
> + * input could send some data to ld, which in turn
> + * could do a callback to one of our other functions.
> + */
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> +
> + dgap_input(ch);
> +
> + spin_lock_irqsave(&bd->bd_lock, lock_flags);
> + spin_lock_irqsave(&ch->ch_lock, lock_flags2);
> +
> + if (ch->ch_flags & CH_RACTIVE)
> + ch->ch_flags |= CH_RENABLE;
> + else
> + writeb(1, &(bs->idata));
> +
> + if (ch->ch_flags & CH_RWAIT) {
> + ch->ch_flags &= ~CH_RWAIT;
> +
> + wake_up_interruptible
> + (&ch->ch_tun.un_flags_wait);
> + }
> + }
> +
> + /*
> + * Process Modem change signals.
> + */
> + if (reason & IFMODEM) {
> + ch->ch_mistat = modem;
> + dgap_carrier(ch);
> + }
> +
> + /*
> + * Process break.
> + */
> + if (reason & IFBREAK) {
> +
> + if (ch->ch_tun.un_tty) {
> + /* A break has been indicated */
> + ch->ch_err_break++;
> + tty_buffer_request_room
> + (ch->ch_tun.un_tty->port, 1);
> + tty_insert_flip_char(ch->ch_tun.un_tty->port,
> + 0, TTY_BREAK);
> + tty_flip_buffer_push(ch->ch_tun.un_tty->port);
> + }
> + }
> +
> + /*
> + * Process Transmit low.
> + */
> + if (reason & IFTLW) {
> + dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_LOW,
> + &lock_flags, &lock_flags2);
> + dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_LOW,
> + &lock_flags, &lock_flags2);
> + if (ch->ch_flags & CH_WLOW) {
> + ch->ch_flags &= ~CH_WLOW;
> + wake_up_interruptible(&ch->ch_flags_wait);
> + }
> + }
> +
> + /*
> + * Process Transmit empty.
> + */
> + if (reason & IFTEM) {
> + dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_EMPTY,
> + &lock_flags, &lock_flags2);
> + dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_EMPTY,
> + &lock_flags, &lock_flags2);
> + if (ch->ch_flags & CH_WEMPTY) {
> + ch->ch_flags &= ~CH_WEMPTY;
> + wake_up_interruptible(&ch->ch_flags_wait);
> + }
> + }
> +
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> +
> +next:
> + tail = (tail + 4) & (EVMAX - EVSTART - 4);
> }
>
> - /* If opened device is greater than our number of ports, bail. */
> - if (MINOR(tty_devnum(tty)) > brd->nasync) {
> - spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> - return -EIO;
> + writew(tail, &(eaddr->ev_tail));
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> +
> + return 0;
> +}
> +
> +/*
> + * Our board poller function.
> + */
> +static void dgap_poll_tasklet(unsigned long data)
> +{
> + struct board_t *bd = (struct board_t *) data;
> + ulong lock_flags;
> + char __iomem *vaddr;
> + u16 head, tail;
> +
> + if (!bd || (bd->magic != DGAP_BOARD_MAGIC))
> + return;
> +
> + if (bd->inhibit_poller)
> + return;
> +
> + spin_lock_irqsave(&bd->bd_lock, lock_flags);
> +
> + vaddr = bd->re_map_membase;
> +
> + /*
> + * If board is ready, parse deeper to see if there is anything to do.
> + */
> + if (bd->state == BOARD_READY) {
> +
> + struct ev_t __iomem *eaddr;
> +
> + if (!bd->re_map_membase) {
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> + return;
> + }
> + if (!bd->re_map_port) {
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> + return;
> + }
> +
> + if (!bd->nasync)
> + goto out;
> +
> + eaddr = (struct ev_t __iomem *) (vaddr + EVBUF);
> +
> + /* Get our head and tail */
> + head = readw(&(eaddr->ev_head));
> + tail = readw(&(eaddr->ev_tail));
> +
> + /*
> + * If there is an event pending. Go service it.
> + */
> + if (head != tail) {
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> + dgap_event(bd);
> + spin_lock_irqsave(&bd->bd_lock, lock_flags);
> + }
> +
> +out:
> + /*
> + * If board is doing interrupts, ACK the interrupt.
> + */
> + if (bd && bd->intr_running)
> + readb(bd->re_map_port + 2);
> +
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> + return;
> }
>
> - ch = brd->channels[minor];
> - if (!ch) {
> - spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> - return -EIO;
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> +}
> +
> +/*
> + * dgap_found_board()
> + *
> + * A board has been found, init it.
> + */
> +static struct board_t *dgap_found_board(struct pci_dev *pdev, int id,
> + int boardnum)
> +{
> + struct board_t *brd;
> + unsigned int pci_irq;
> + int i;
> + int ret;
> +
> + /* get the board structure and prep it */
> + brd = kzalloc(sizeof(struct board_t), GFP_KERNEL);
> + if (!brd)
> + return ERR_PTR(-ENOMEM);
> +
> + /* store the info for the board we've found */
> + brd->magic = DGAP_BOARD_MAGIC;
> + brd->boardnum = boardnum;
> + brd->vendor = dgap_pci_tbl[id].vendor;
> + brd->device = dgap_pci_tbl[id].device;
> + brd->pdev = pdev;
> + brd->pci_bus = pdev->bus->number;
> + brd->pci_slot = PCI_SLOT(pdev->devfn);
> + brd->name = dgap_ids[id].name;
> + brd->maxports = dgap_ids[id].maxports;
> + brd->type = dgap_ids[id].config_type;
> + brd->dpatype = dgap_ids[id].dpatype;
> + brd->dpastatus = BD_NOFEP;
> + init_waitqueue_head(&brd->state_wait);
> +
> + spin_lock_init(&brd->bd_lock);
> +
> + brd->inhibit_poller = FALSE;
> + brd->wait_for_bios = 0;
> + brd->wait_for_fep = 0;
> +
> + for (i = 0; i < MAXPORTS; i++)
> + brd->channels[i] = NULL;
> +
> + /* store which card & revision we have */
> + pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
> + pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
> + pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
> +
> + pci_irq = pdev->irq;
> + brd->irq = pci_irq;
> +
> + /* get the PCI Base Address Registers */
> +
> + /* Xr Jupiter and EPC use BAR 2 */
> + if (brd->device == PCI_DEV_XRJ_DID || brd->device == PCI_DEV_EPCJ_DID) {
> + brd->membase = pci_resource_start(pdev, 2);
> + brd->membase_end = pci_resource_end(pdev, 2);
> + }
> + /* Everyone else uses BAR 0 */
> + else {
> + brd->membase = pci_resource_start(pdev, 0);
> + brd->membase_end = pci_resource_end(pdev, 0);
> }
>
> - /* Grab channel lock */
> - spin_lock_irqsave(&ch->ch_lock, lock_flags2);
> + if (!brd->membase) {
> + ret = -ENODEV;
> + goto free_brd;
> + }
>
> - /* Figure out our type */
> - if (major == brd->dgap_serial_major) {
> - un = &brd->channels[minor]->ch_tun;
> - un->un_type = DGAP_SERIAL;
> - } else if (major == brd->dgap_transparent_print_major) {
> - un = &brd->channels[minor]->ch_pun;
> - un->un_type = DGAP_PRINT;
> + if (brd->membase & 1)
> + brd->membase &= ~3;
> + else
> + brd->membase &= ~15;
> +
> + /*
> + * On the PCI boards, there is no IO space allocated
> + * The I/O registers will be in the first 3 bytes of the
> + * upper 2MB of the 4MB memory space. The board memory
> + * will be mapped into the low 2MB of the 4MB memory space
> + */
> + brd->port = brd->membase + PCI_IO_OFFSET;
> + brd->port_end = brd->port + PCI_IO_SIZE;
> +
> + /*
> + * Special initialization for non-PLX boards
> + */
> + if (brd->device != PCI_DEV_XRJ_DID && brd->device != PCI_DEV_EPCJ_DID) {
> + unsigned short cmd;
> +
> + pci_write_config_byte(pdev, 0x40, 0);
> + pci_write_config_byte(pdev, 0x46, 0);
> +
> + /* Limit burst length to 2 doubleword transactions */
> + pci_write_config_byte(pdev, 0x42, 1);
> +
> + /*
> + * Enable IO and mem if not already done.
> + * This was needed for support on Itanium.
> + */
> + pci_read_config_word(pdev, PCI_COMMAND, &cmd);
> + cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
> + pci_write_config_word(pdev, PCI_COMMAND, cmd);
> + }
> +
> + /* init our poll helper tasklet */
> + tasklet_init(&brd->helper_tasklet, dgap_poll_tasklet,
> + (unsigned long) brd);
> +
> + ret = dgap_remap(brd);
> + if (ret)
> + goto free_brd;
> +
> + pr_info("dgap: board %d: %s (rev %d), irq %ld\n",
> + boardnum, brd->name, brd->rev, brd->irq);
> +
> + return brd;
> +
> +free_brd:
> + kfree(brd);
> +
> + return ERR_PTR(ret);
> +}
> +
> +/*
> + * dgap_intr()
> + *
> + * Driver interrupt handler.
> + */
> +static irqreturn_t dgap_intr(int irq, void *voidbrd)
> +{
> + struct board_t *brd = (struct board_t *) voidbrd;
> +
> + if (!brd)
> + return IRQ_NONE;
> +
> + /*
> + * Check to make sure its for us.
> + */
> + if (brd->magic != DGAP_BOARD_MAGIC)
> + return IRQ_NONE;
> +
> + brd->intr_count++;
> +
> + /*
> + * Schedule tasklet to run at a better time.
> + */
> + tasklet_schedule(&brd->helper_tasklet);
> + return IRQ_HANDLED;
> +}
> +
> +/*****************************************************************************
> +*
> +* Function:
> +*
> +* dgap_poll_handler
> +*
> +* Author:
> +*
> +* Scott H Kilau
> +*
> +* Parameters:
> +*
> +* dummy -- ignored
> +*
> +* Return Values:
> +*
> +* none
> +*
> +* Description:
> +*
> +* As each timer expires, it determines (a) whether the "transmit"
> +* waiter needs to be woken up, and (b) whether the poller needs to
> +* be rescheduled.
> +*
> +******************************************************************************/
> +
> +static void dgap_poll_handler(ulong dummy)
> +{
> + unsigned int i;
> + struct board_t *brd;
> + unsigned long lock_flags;
> + ulong new_time;
> +
> + dgap_poll_counter++;
> +
> + /*
> + * Do not start the board state machine until
> + * driver tells us its up and running, and has
> + * everything it needs.
> + */
> + if (dgap_driver_state != DRIVER_READY)
> + goto schedule_poller;
> +
> + /*
> + * If we have just 1 board, or the system is not SMP,
> + * then use the typical old style poller.
> + * Otherwise, use our new tasklet based poller, which should
> + * speed things up for multiple boards.
> + */
> + if ((dgap_numboards == 1) || (num_online_cpus() <= 1)) {
> + for (i = 0; i < dgap_numboards; i++) {
> +
> + brd = dgap_board[i];
> +
> + if (brd->state == BOARD_FAILED)
> + continue;
> + if (!brd->intr_running)
> + /* Call the real board poller directly */
> + dgap_poll_tasklet((unsigned long) brd);
> + }
> } else {
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> - spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> - return -EIO;
> + /*
> + * Go thru each board, kicking off a
> + * tasklet for each if needed
> + */
> + for (i = 0; i < dgap_numboards; i++) {
> + brd = dgap_board[i];
> +
> + /*
> + * Attempt to grab the board lock.
> + *
> + * If we can't get it, no big deal, the next poll
> + * will get it. Basically, I just really don't want
> + * to spin in here, because I want to kick off my
> + * tasklets as fast as I can, and then get out the
> + * poller.
> + */
> + if (!spin_trylock(&brd->bd_lock))
> + continue;
> +
> + /*
> + * If board is in a failed state, don't bother
> + * scheduling a tasklet
> + */
> + if (brd->state == BOARD_FAILED) {
> + spin_unlock(&brd->bd_lock);
> + continue;
> + }
> +
> + /* Schedule a poll helper task */
> + if (!brd->intr_running)
> + tasklet_schedule(&brd->helper_tasklet);
> +
> + /*
> + * Can't do DGAP_UNLOCK here, as we don't have
> + * lock_flags because we did a trylock above.
> + */
> + spin_unlock(&brd->bd_lock);
> + }
> }
>
> - /* Store our unit into driver_data, so we always have it available. */
> - tty->driver_data = un;
> +schedule_poller:
>
> /*
> - * Error if channel info pointer is NULL.
> + * Schedule ourself back at the nominal wakeup interval.
> */
> - bs = ch->ch_bs;
> - if (!bs) {
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> - spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> - return -EIO;
> + spin_lock_irqsave(&dgap_poll_lock, lock_flags);
> + dgap_poll_time += dgap_jiffies_from_ms(dgap_poll_tick);
> +
> + new_time = dgap_poll_time - jiffies;
> +
> + if ((ulong) new_time >= 2 * dgap_poll_tick) {
> + dgap_poll_time =
> + jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
> }
>
> + dgap_poll_timer.function = dgap_poll_handler;
> + dgap_poll_timer.data = 0;
> + dgap_poll_timer.expires = dgap_poll_time;
> + spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
> +
> + if (!dgap_poll_stop)
> + add_timer(&dgap_poll_timer);
> +}
> +
> +/*=======================================================================
> + *
> + * dgap_cmdb - Sends a 2 byte command to the FEP.
> + *
> + * ch - Pointer to channel structure.
> + * cmd - Command to be sent.
> + * byte1 - Integer containing first byte to be sent.
> + * byte2 - Integer containing second byte to be sent.
> + * ncmds - Wait until ncmds or fewer cmds are left
> + * in the cmd buffer before returning.
> + *
> + *=======================================================================*/
> +static void dgap_cmdb(struct channel_t *ch, u8 cmd, u8 byte1,
> + u8 byte2, uint ncmds)
> +{
> + char __iomem *vaddr;
> + struct __iomem cm_t *cm_addr;
> + uint count;
> + uint n;
> + u16 head;
> + u16 tail;
> +
> + if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> + return;
> +
> /*
> - * Initialize tty's
> + * Check if board is still alive.
> */
> - if (!(un->un_flags & UN_ISOPEN)) {
> - /* Store important variables. */
> - un->un_tty = tty;
> + if (ch->ch_bd->state == BOARD_FAILED)
> + return;
>
> - /* Maybe do something here to the TTY struct as well? */
> + /*
> + * Make sure the pointers are in range before
> + * writing to the FEP memory.
> + */
> + vaddr = ch->ch_bd->re_map_membase;
> +
> + if (!vaddr)
> + return;
> +
> + cm_addr = (struct cm_t __iomem *) (vaddr + CMDBUF);
> + head = readw(&(cm_addr->cm_head));
> +
> + /*
> + * Forget it if pointers out of range.
> + */
> + if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
> + ch->ch_bd->state = BOARD_FAILED;
> + return;
> }
>
> /*
> - * Initialize if neither terminal or printer is open.
> + * Put the data in the circular command buffer.
> */
> - if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) {
> + writeb(cmd, (vaddr + head + CMDSTART + 0));
> + writeb((u8) ch->ch_portnum, (vaddr + head + CMDSTART + 1));
> + writeb(byte1, (vaddr + head + CMDSTART + 2));
> + writeb(byte2, (vaddr + head + CMDSTART + 3));
>
> - ch->ch_mforce = 0;
> - ch->ch_mval = 0;
> + head = (head + 4) & (CMDMAX - CMDSTART - 4);
> +
> + writew(head, &(cm_addr->cm_head));
> +
> + /*
> + * Wait if necessary before updating the head
> + * pointer to limit the number of outstanding
> + * commands to the FEP. If the time spent waiting
> + * is outlandish, declare the FEP dead.
> + */
> + for (count = dgap_count ;;) {
> +
> + head = readw(&(cm_addr->cm_head));
> + tail = readw(&(cm_addr->cm_tail));
> +
> + n = (head - tail) & (CMDMAX - CMDSTART - 4);
> +
> + if (n <= ncmds * sizeof(struct cm_t))
> + break;
> +
> + if (--count == 0) {
> + ch->ch_bd->state = BOARD_FAILED;
> + return;
> + }
> + udelay(10);
> + }
> +}
> +
> +/*=======================================================================
> + *
> + * dgap_cmdw - Sends a 1 word command to the FEP.
> + *
> + * ch - Pointer to channel structure.
> + * cmd - Command to be sent.
> + * word - Integer containing word to be sent.
> + * ncmds - Wait until ncmds or fewer cmds are left
> + * in the cmd buffer before returning.
> + *
> + *=======================================================================*/
> +static void dgap_cmdw(struct channel_t *ch, u8 cmd, u16 word, uint ncmds)
> +{
> + char __iomem *vaddr;
> + struct __iomem cm_t *cm_addr;
> + uint count;
> + uint n;
> + u16 head;
> + u16 tail;
> +
> + if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> + return;
> +
> + /*
> + * Check if board is still alive.
> + */
> + if (ch->ch_bd->state == BOARD_FAILED)
> + return;
> +
> + /*
> + * Make sure the pointers are in range before
> + * writing to the FEP memory.
> + */
> + vaddr = ch->ch_bd->re_map_membase;
> + if (!vaddr)
> + return;
> +
> + cm_addr = (struct cm_t __iomem *) (vaddr + CMDBUF);
> + head = readw(&(cm_addr->cm_head));
> +
> + /*
> + * Forget it if pointers out of range.
> + */
> + if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
> + ch->ch_bd->state = BOARD_FAILED;
> + return;
> + }
> +
> + /*
> + * Put the data in the circular command buffer.
> + */
> + writeb(cmd, (vaddr + head + CMDSTART + 0));
> + writeb((u8) ch->ch_portnum, (vaddr + head + CMDSTART + 1));
> + writew((u16) word, (vaddr + head + CMDSTART + 2));
> +
> + head = (head + 4) & (CMDMAX - CMDSTART - 4);
> +
> + writew(head, &(cm_addr->cm_head));
> +
> + /*
> + * Wait if necessary before updating the head
> + * pointer to limit the number of outstanding
> + * commands to the FEP. If the time spent waiting
> + * is outlandish, declare the FEP dead.
> + */
> + for (count = dgap_count ;;) {
> +
> + head = readw(&(cm_addr->cm_head));
> + tail = readw(&(cm_addr->cm_tail));
> +
> + n = (head - tail) & (CMDMAX - CMDSTART - 4);
> +
> + if (n <= ncmds * sizeof(struct cm_t))
> + break;
> +
> + if (--count == 0) {
> + ch->ch_bd->state = BOARD_FAILED;
> + return;
> + }
> + udelay(10);
> + }
> +}
> +
> +/*=======================================================================
> + *
> + * dgap_cmdw_ext - Sends a extended word command to the FEP.
> + *
> + * ch - Pointer to channel structure.
> + * cmd - Command to be sent.
> + * word - Integer containing word to be sent.
> + * ncmds - Wait until ncmds or fewer cmds are left
> + * in the cmd buffer before returning.
> + *
> + *=======================================================================*/
> +static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds)
> +{
> + char __iomem *vaddr;
> + struct __iomem cm_t *cm_addr;
> + uint count;
> + uint n;
> + u16 head;
> + u16 tail;
> +
> + if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> + return;
> +
> + /*
> + * Check if board is still alive.
> + */
> + if (ch->ch_bd->state == BOARD_FAILED)
> + return;
> +
> + /*
> + * Make sure the pointers are in range before
> + * writing to the FEP memory.
> + */
> + vaddr = ch->ch_bd->re_map_membase;
> + if (!vaddr)
> + return;
> +
> + cm_addr = (struct cm_t __iomem *) (vaddr + CMDBUF);
> + head = readw(&(cm_addr->cm_head));
> +
> + /*
> + * Forget it if pointers out of range.
> + */
> + if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
> + ch->ch_bd->state = BOARD_FAILED;
> + return;
> + }
> +
> + /*
> + * Put the data in the circular command buffer.
> + */
> +
> + /* Write an FF to tell the FEP that we want an extended command */
> + writeb((u8) 0xff, (vaddr + head + CMDSTART + 0));
> +
> + writeb((u8) ch->ch_portnum, (vaddr + head + CMDSTART + 1));
> + writew((u16) cmd, (vaddr + head + CMDSTART + 2));
> +
> + /*
> + * If the second part of the command won't fit,
> + * put it at the beginning of the circular buffer.
> + */
> + if (((head + 4) >= ((CMDMAX - CMDSTART)) || (head & 03)))
> + writew((u16) word, (vaddr + CMDSTART));
> + else
> + writew((u16) word, (vaddr + head + CMDSTART + 4));
> +
> + head = (head + 8) & (CMDMAX - CMDSTART - 4);
> +
> + writew(head, &(cm_addr->cm_head));
> +
> + /*
> + * Wait if necessary before updating the head
> + * pointer to limit the number of outstanding
> + * commands to the FEP. If the time spent waiting
> + * is outlandish, declare the FEP dead.
> + */
> + for (count = dgap_count ;;) {
> +
> + head = readw(&(cm_addr->cm_head));
> + tail = readw(&(cm_addr->cm_tail));
> +
> + n = (head - tail) & (CMDMAX - CMDSTART - 4);
> +
> + if (n <= ncmds * sizeof(struct cm_t))
> + break;
> +
> + if (--count == 0) {
> + ch->ch_bd->state = BOARD_FAILED;
> + return;
> + }
> + udelay(10);
> + }
> +}
> +
> +/*=======================================================================
> + *
> + * dgap_wmove - Write data to FEP buffer.
> + *
> + * ch - Pointer to channel structure.
> + * buf - Poiter to characters to be moved.
> + * cnt - Number of characters to move.
> + *
> + *=======================================================================*/
> +static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt)
> +{
> + int n;
> + char __iomem *taddr;
> + struct bs_t __iomem *bs;
> + u16 head;
> +
> + if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> + return;
> +
> + /*
> + * Check parameters.
> + */
> + bs = ch->ch_bs;
> + head = readw(&(bs->tx_head));
> +
> + /*
> + * If pointers are out of range, just return.
> + */
> + if ((cnt > ch->ch_tsize) ||
> + (unsigned)(head - ch->ch_tstart) >= ch->ch_tsize)
> + return;
> +
> + /*
> + * If the write wraps over the top of the circular buffer,
> + * move the portion up to the wrap point, and reset the
> + * pointers to the bottom.
> + */
> + n = ch->ch_tstart + ch->ch_tsize - head;
> +
> + if (cnt >= n) {
> + cnt -= n;
> + taddr = ch->ch_taddr + head;
> + memcpy_toio(taddr, buf, n);
> + head = ch->ch_tstart;
> + buf += n;
> + }
> +
> + /*
> + * Move rest of data.
> + */
> + taddr = ch->ch_taddr + head;
> + n = cnt;
> + memcpy_toio(taddr, buf, n);
> + head += cnt;
> +
> + writew(head, &(bs->tx_head));
> +}
>
> +/*
> + * Calls the firmware to reset this channel.
> + */
> +static void dgap_firmware_reset_port(struct channel_t *ch)
> +{
> + dgap_cmdb(ch, CHRESET, 0, 0, 0);
> +
> + /*
> + * Now that the channel is reset, we need to make sure
> + * all the current settings get reapplied to the port
> + * in the firmware.
> + *
> + * So we will set the driver's cache of firmware
> + * settings all to 0, and then call param.
> + */
> + ch->ch_fepiflag = 0;
> + ch->ch_fepcflag = 0;
> + ch->ch_fepoflag = 0;
> + ch->ch_fepstartc = 0;
> + ch->ch_fepstopc = 0;
> + ch->ch_fepastartc = 0;
> + ch->ch_fepastopc = 0;
> + ch->ch_mostat = 0;
> + ch->ch_hflow = 0;
> +}
> +
> +/*=======================================================================
> + *
> + * dgap_param - Set Digi parameters.
> + *
> + * struct tty_struct * - TTY for port.
> + *
> + *=======================================================================*/
> +static int dgap_param(struct channel_t *ch, struct board_t *bd, u32 un_type)
> +{
> + u16 head;
> + u16 cflag;
> + u16 iflag;
> + u8 mval;
> + u8 hflow;
> +
> + /*
> + * If baud rate is zero, flush queues, and set mval to drop DTR.
> + */
> + if ((ch->ch_c_cflag & (CBAUD)) == 0) {
> +
> + /* flush rx */
> + head = readw(&(ch->ch_bs->rx_head));
> + writew(head, &(ch->ch_bs->rx_tail));
> +
> + /* flush tx */
> + head = readw(&(ch->ch_bs->tx_head));
> + writew(head, &(ch->ch_bs->tx_tail));
> +
> + ch->ch_flags |= (CH_BAUD0);
> +
> + /* Drop RTS and DTR */
> + ch->ch_mval &= ~(D_RTS(ch)|D_DTR(ch));
> + mval = D_DTR(ch) | D_RTS(ch);
> + ch->ch_baud_info = 0;
> +
> + } else if (ch->ch_custom_speed && (bd->bd_flags & BD_FEP5PLUS)) {
> /*
> - * Flush input queue.
> + * Tell the fep to do the command
> */
> - head = readw(&(bs->rx_head));
> - writew(head, &(bs->rx_tail));
>
> - ch->ch_flags = 0;
> - ch->pscan_state = 0;
> - ch->pscan_savechar = 0;
> + dgap_cmdw_ext(ch, 0xff01, ch->ch_custom_speed, 0);
>
> - ch->ch_c_cflag = tty->termios.c_cflag;
> - ch->ch_c_iflag = tty->termios.c_iflag;
> - ch->ch_c_oflag = tty->termios.c_oflag;
> - ch->ch_c_lflag = tty->termios.c_lflag;
> - ch->ch_startc = tty->termios.c_cc[VSTART];
> - ch->ch_stopc = tty->termios.c_cc[VSTOP];
> + /*
> + * Now go get from fep mem, what the fep
> + * believes the custom baud rate is.
> + */
> + ch->ch_custom_speed = dgap_get_custom_baud(ch);
> + ch->ch_baud_info = ch->ch_custom_speed;
>
> - /* TODO: flush our TTY struct here? */
> + /* Handle transition from B0 */
> + if (ch->ch_flags & CH_BAUD0) {
> + ch->ch_flags &= ~(CH_BAUD0);
> + ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
> + }
> + mval = D_DTR(ch) | D_RTS(ch);
> +
> + } else {
> + /*
> + * Set baud rate, character size, and parity.
> + */
> +
> +
> + int iindex = 0;
> + int jindex = 0;
> + int baud = 0;
> +
> + ulong bauds[4][16] = {
> + { /* slowbaud */
> + 0, 50, 75, 110,
> + 134, 150, 200, 300,
> + 600, 1200, 1800, 2400,
> + 4800, 9600, 19200, 38400 },
> + { /* slowbaud & CBAUDEX */
> + 0, 57600, 115200, 230400,
> + 460800, 150, 200, 921600,
> + 600, 1200, 1800, 2400,
> + 4800, 9600, 19200, 38400 },
> + { /* fastbaud */
> + 0, 57600, 76800, 115200,
> + 14400, 57600, 230400, 76800,
> + 115200, 230400, 28800, 460800,
> + 921600, 9600, 19200, 38400 },
> + { /* fastbaud & CBAUDEX */
> + 0, 57600, 115200, 230400,
> + 460800, 150, 200, 921600,
> + 600, 1200, 1800, 2400,
> + 4800, 9600, 19200, 38400 }
> + };
> +
> + /*
> + * Only use the TXPrint baud rate if the
> + * terminal unit is NOT open
> + */
> + if (!(ch->ch_tun.un_flags & UN_ISOPEN) &&
> + un_type == DGAP_PRINT)
> + baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
> + else
> + baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
> +
> + if (ch->ch_c_cflag & CBAUDEX)
> + iindex = 1;
> +
> + if (ch->ch_digi.digi_flags & DIGI_FAST)
> + iindex += 2;
> +
> + jindex = baud;
> +
> + if ((iindex >= 0) && (iindex < 4) &&
> + (jindex >= 0) && (jindex < 16))
> + baud = bauds[iindex][jindex];
> + else
> + baud = 0;
> +
> + if (baud == 0)
> + baud = 9600;
> +
> + ch->ch_baud_info = baud;
> +
> + /*
> + * CBAUD has bit position 0x1000 set these days to
> + * indicate Linux baud rate remap.
> + * We use a different bit assignment for high speed.
> + * Clear this bit out while grabbing the parts of
> + * "cflag" we want.
> + */
> + cflag = ch->ch_c_cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB |
> + CSTOPB | CSIZE);
> +
> + /*
> + * HUPCL bit is used by FEP to indicate fast baud
> + * table is to be used.
> + */
> + if ((ch->ch_digi.digi_flags & DIGI_FAST) ||
> + (ch->ch_c_cflag & CBAUDEX))
> + cflag |= HUPCL;
> +
> + if ((ch->ch_c_cflag & CBAUDEX) &&
> + !(ch->ch_digi.digi_flags & DIGI_FAST)) {
> + /*
> + * The below code is trying to guarantee that only
> + * baud rates 115200, 230400, 460800, 921600 are
> + * remapped. We use exclusive or because the various
> + * baud rates share common bit positions and therefore
> + * can't be tested for easily.
> + */
> + tcflag_t tcflag = (ch->ch_c_cflag & CBAUD) | CBAUDEX;
> + int baudpart = 0;
> +
> + /*
> + * Map high speed requests to index
> + * into FEP's baud table
> + */
> + switch (tcflag) {
> + case B57600:
> + baudpart = 1;
> + break;
> +#ifdef B76800
> + case B76800:
> + baudpart = 2;
> + break;
> +#endif
> + case B115200:
> + baudpart = 3;
> + break;
> + case B230400:
> + baudpart = 9;
> + break;
> + case B460800:
> + baudpart = 11;
> + break;
> +#ifdef B921600
> + case B921600:
> + baudpart = 12;
> + break;
> +#endif
> + default:
> + baudpart = 0;
> + }
> +
> + if (baudpart)
> + cflag = (cflag & ~(CBAUD | CBAUDEX)) | baudpart;
> + }
> +
> + cflag &= 0xffff;
> +
> + if (cflag != ch->ch_fepcflag) {
> + ch->ch_fepcflag = (u16) (cflag & 0xffff);
> +
> + /*
> + * Okay to have channel and board
> + * locks held calling this
> + */
> + dgap_cmdw(ch, SCFLAG, (u16) cflag, 0);
> + }
> +
> + /* Handle transition from B0 */
> + if (ch->ch_flags & CH_BAUD0) {
> + ch->ch_flags &= ~(CH_BAUD0);
> + ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
> + }
> + mval = D_DTR(ch) | D_RTS(ch);
> }
>
> - dgap_carrier(ch);
> /*
> - * Run param in case we changed anything
> + * Get input flags.
> */
> - dgap_param(ch, brd, un->un_type);
> + iflag = ch->ch_c_iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK |
> + INPCK | ISTRIP | IXON | IXANY | IXOFF);
> +
> + if ((ch->ch_startc == _POSIX_VDISABLE) ||
> + (ch->ch_stopc == _POSIX_VDISABLE)) {
> + iflag &= ~(IXON | IXOFF);
> + ch->ch_c_iflag &= ~(IXON | IXOFF);
> + }
>
> /*
> - * follow protocol for opening port
> + * Only the IBM Xr card can switch between
> + * 232 and 422 modes on the fly
> */
> + if (bd->device == PCI_DEV_XR_IBM_DID) {
> + if (ch->ch_digi.digi_flags & DIGI_422)
> + dgap_cmdb(ch, SCOMMODE, MODE_422, 0, 0);
> + else
> + dgap_cmdb(ch, SCOMMODE, MODE_232, 0, 0);
> + }
>
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> - spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> + if (ch->ch_digi.digi_flags & DIGI_ALTPIN)
> + iflag |= IALTPIN;
>
> - rc = dgap_block_til_ready(tty, file, ch);
> + if (iflag != ch->ch_fepiflag) {
> + ch->ch_fepiflag = iflag;
>
> - if (!un->un_tty)
> - return -ENODEV;
> + /* Okay to have channel and board locks held calling this */
> + dgap_cmdw(ch, SIFLAG, (u16) ch->ch_fepiflag, 0);
> + }
>
> - /* No going back now, increment our unit and channel counters */
> - spin_lock_irqsave(&ch->ch_lock, lock_flags);
> - ch->ch_open_count++;
> - un->un_open_count++;
> - un->un_flags |= (UN_ISOPEN);
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
> + /*
> + * Select hardware handshaking.
> + */
> + hflow = 0;
>
> - return rc;
> + if (ch->ch_c_cflag & CRTSCTS)
> + hflow |= (D_RTS(ch) | D_CTS(ch));
> + if (ch->ch_digi.digi_flags & RTSPACE)
> + hflow |= D_RTS(ch);
> + if (ch->ch_digi.digi_flags & DTRPACE)
> + hflow |= D_DTR(ch);
> + if (ch->ch_digi.digi_flags & CTSPACE)
> + hflow |= D_CTS(ch);
> + if (ch->ch_digi.digi_flags & DSRPACE)
> + hflow |= D_DSR(ch);
> + if (ch->ch_digi.digi_flags & DCDPACE)
> + hflow |= D_CD(ch);
> +
> + if (hflow != ch->ch_hflow) {
> + ch->ch_hflow = hflow;
> +
> + /* Okay to have channel and board locks held calling this */
> + dgap_cmdb(ch, SHFLOW, (u8) hflow, 0xff, 0);
> + }
> +
> + /*
> + * Set RTS and/or DTR Toggle if needed,
> + * but only if product is FEP5+ based.
> + */
> + if (bd->bd_flags & BD_FEP5PLUS) {
> + u16 hflow2 = 0;
> +
> + if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE)
> + hflow2 |= (D_RTS(ch));
> + if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE)
> + hflow2 |= (D_DTR(ch));
> +
> + dgap_cmdw_ext(ch, 0xff03, hflow2, 0);
> + }
> +
> + /*
> + * Set modem control lines.
> + */
> +
> + mval ^= ch->ch_mforce & (mval ^ ch->ch_mval);
> +
> + if (ch->ch_mostat ^ mval) {
> + ch->ch_mostat = mval;
> +
> + /* Okay to have channel and board locks held calling this */
> + dgap_cmdb(ch, SMODEM, (u8) mval, D_RTS(ch)|D_DTR(ch), 0);
> + }
> +
> + /*
> + * Read modem signals, and then call carrier function.
> + */
> + ch->ch_mistat = readb(&(ch->ch_bs->m_stat));
> + dgap_carrier(ch);
> +
> + /*
> + * Set the start and stop characters.
> + */
> + if (ch->ch_startc != ch->ch_fepstartc ||
> + ch->ch_stopc != ch->ch_fepstopc) {
> + ch->ch_fepstartc = ch->ch_startc;
> + ch->ch_fepstopc = ch->ch_stopc;
> +
> + /* Okay to have channel and board locks held calling this */
> + dgap_cmdb(ch, SFLOWC, ch->ch_fepstartc, ch->ch_fepstopc, 0);
> + }
> +
> + /*
> + * Set the Auxiliary start and stop characters.
> + */
> + if (ch->ch_astartc != ch->ch_fepastartc ||
> + ch->ch_astopc != ch->ch_fepastopc) {
> + ch->ch_fepastartc = ch->ch_astartc;
> + ch->ch_fepastopc = ch->ch_astopc;
> +
> + /* Okay to have channel and board locks held calling this */
> + dgap_cmdb(ch, SAFLOWC, ch->ch_fepastartc, ch->ch_fepastopc, 0);
> + }
> +
> + return 0;
> }
>
> /*
> @@ -2155,15 +3194,18 @@ static int dgap_block_til_ready(struct tty_struct *tty, struct file *file,
> }
>
> /*
> - * dgap_tty_hangup()
> + * dgap_tty_flush_buffer()
> *
> - * Hangup the port. Like a close, but don't wait for output to drain.
> + * Flush Tx buffer (make in == out)
> */
> -static void dgap_tty_hangup(struct tty_struct *tty)
> +static void dgap_tty_flush_buffer(struct tty_struct *tty)
> {
> struct board_t *bd;
> struct channel_t *ch;
> struct un_t *un;
> + ulong lock_flags;
> + ulong lock_flags2;
> + u16 head;
>
> if (!tty || tty->magic != TTY_MAGIC)
> return;
> @@ -2180,21 +3222,39 @@ static void dgap_tty_hangup(struct tty_struct *tty)
> if (!bd || bd->magic != DGAP_BOARD_MAGIC)
> return;
>
> - /* flush the transmit queues */
> - dgap_tty_flush_buffer(tty);
> + spin_lock_irqsave(&bd->bd_lock, lock_flags);
> + spin_lock_irqsave(&ch->ch_lock, lock_flags2);
> +
> + ch->ch_flags &= ~CH_STOP;
> + head = readw(&(ch->ch_bs->tx_head));
> + dgap_cmdw(ch, FLUSHTX, (u16) head, 0);
> + dgap_cmdw(ch, RESUMETX, 0, 0);
> + if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
> + ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
> + wake_up_interruptible(&ch->ch_tun.un_flags_wait);
> + }
> + if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
> + ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
> + wake_up_interruptible(&ch->ch_pun.un_flags_wait);
> + }
> +
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> + spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> + if (waitqueue_active(&tty->write_wait))
> + wake_up_interruptible(&tty->write_wait);
> + tty_wakeup(tty);
> }
>
> /*
> - * dgap_tty_close()
> + * dgap_tty_hangup()
> *
> + * Hangup the port. Like a close, but don't wait for output to drain.
> */
> -static void dgap_tty_close(struct tty_struct *tty, struct file *file)
> +static void dgap_tty_hangup(struct tty_struct *tty)
> {
> - struct ktermios *ts;
> struct board_t *bd;
> struct channel_t *ch;
> struct un_t *un;
> - ulong lock_flags;
>
> if (!tty || tty->magic != TTY_MAGIC)
> return;
> @@ -2211,107 +3271,8 @@ static void dgap_tty_close(struct tty_struct *tty, struct file *file)
> if (!bd || bd->magic != DGAP_BOARD_MAGIC)
> return;
>
> - ts = &tty->termios;
> -
> - spin_lock_irqsave(&ch->ch_lock, lock_flags);
> -
> - /*
> - * Determine if this is the last close or not - and if we agree about
> - * which type of close it is with the Line Discipline
> - */
> - if ((tty->count == 1) && (un->un_open_count != 1)) {
> - /*
> - * Uh, oh. tty->count is 1, which means that the tty
> - * structure will be freed. un_open_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.
> - */
> - un->un_open_count = 1;
> - }
> -
> - if (--un->un_open_count < 0)
> - un->un_open_count = 0;
> -
> - ch->ch_open_count--;
> -
> - if (ch->ch_open_count && un->un_open_count) {
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
> - return;
> - }
> -
> - /* OK, its the last close on the unit */
> -
> - un->un_flags |= UN_CLOSING;
> -
> - tty->closing = 1;
> -
> - /*
> - * Only officially close channel if count is 0 and
> - * DIGI_PRINTER bit is not set.
> - */
> - if ((ch->ch_open_count == 0) &&
> - !(ch->ch_digi.digi_flags & DIGI_PRINTER)) {
> -
> - ch->ch_flags &= ~(CH_RXBLOCK);
> -
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
> -
> - /* wait for output to drain */
> - /* This will also return if we take an interrupt */
> -
> - dgap_wait_for_drain(tty);
> -
> - dgap_tty_flush_buffer(tty);
> - tty_ldisc_flush(tty);
> -
> - spin_lock_irqsave(&ch->ch_lock, lock_flags);
> -
> - tty->closing = 0;
> -
> - /*
> - * If we have HUPCL set, lower DTR and RTS
> - */
> - if (ch->ch_c_cflag & HUPCL) {
> - ch->ch_mostat &= ~(D_RTS(ch)|D_DTR(ch));
> - dgap_cmdb(ch, SMODEM, 0, D_DTR(ch)|D_RTS(ch), 0);
> -
> - /*
> - * Go to sleep to ensure RTS/DTR
> - * have been dropped for modems to see it.
> - */
> - spin_unlock_irqrestore(&ch->ch_lock,
> - lock_flags);
> -
> - /* .25 second delay for dropping RTS/DTR */
> - schedule_timeout_interruptible(msecs_to_jiffies(250));
> -
> - spin_lock_irqsave(&ch->ch_lock, lock_flags);
> - }
> -
> - ch->pscan_state = 0;
> - ch->pscan_savechar = 0;
> - ch->ch_baud_info = 0;
> -
> - }
> -
> - /*
> - * turn off print device when closing print device.
> - */
> - if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
> - dgap_wmove(ch, ch->ch_digi.digi_offstr,
> - (int) ch->ch_digi.digi_offlen);
> - ch->ch_flags &= ~CH_PRON;
> - }
> -
> - un->un_tty = NULL;
> - un->un_flags &= ~(UN_ISOPEN | UN_CLOSING);
> - tty->driver_data = NULL;
> -
> - wake_up_interruptible(&ch->ch_flags_wait);
> - wake_up_interruptible(&un->un_flags_wait);
> -
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
> + /* flush the transmit queues */
> + dgap_tty_flush_buffer(tty);
> }
>
> /*
> @@ -2611,22 +3572,6 @@ static int dgap_tty_write_room(struct tty_struct *tty)
> }
>
> /*
> - * dgap_tty_put_char()
> - *
> - * Put a character into ch->ch_buf
> - *
> - * - used by the line discipline for OPOST processing
> - */
> -static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c)
> -{
> - /*
> - * Simply call tty_write.
> - */
> - dgap_tty_write(tty, &c, 1);
> - return 1;
> -}
> -
> -/*
> * dgap_tty_write()
> *
> * Take data from the user or kernel and send it out to the FEP.
> @@ -2788,6 +3733,22 @@ static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf,
> }
>
> /*
> + * dgap_tty_put_char()
> + *
> + * Put a character into ch->ch_buf
> + *
> + * - used by the line discipline for OPOST processing
> + */
> +static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c)
> +{
> + /*
> + * Simply call tty_write.
> + */
> + dgap_tty_write(tty, &c, 1);
> + return 1;
> +}
> +
> +/*
> * Return modem signals to ld.
> */
> static int dgap_tty_tiocmget(struct tty_struct *tty)
> @@ -3448,13 +4409,176 @@ static void dgap_tty_unthrottle(struct tty_struct *tty)
> spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> }
>
> -static void dgap_tty_start(struct tty_struct *tty)
> +/************************************************************************
> + *
> + * TTY Entry points and helper functions
> + *
> + ************************************************************************/
> +
> +/*
> + * dgap_tty_open()
> + *
> + */
> +static int dgap_tty_open(struct tty_struct *tty, struct file *file)
> {
> - struct board_t *bd;
> + struct board_t *brd;
> struct channel_t *ch;
> struct un_t *un;
> + struct bs_t __iomem *bs;
> + uint major;
> + uint minor;
> + int rc;
> ulong lock_flags;
> ulong lock_flags2;
> + u16 head;
> +
> + major = MAJOR(tty_devnum(tty));
> + minor = MINOR(tty_devnum(tty));
> +
> + if (major > 255)
> + return -EIO;
> +
> + /* Get board pointer from our array of majors we have allocated */
> + brd = dgap_boards_by_major[major];
> + if (!brd)
> + return -EIO;
> +
> + /*
> + * If board is not yet up to a state of READY, go to
> + * sleep waiting for it to happen or they cancel the open.
> + */
> + rc = wait_event_interruptible(brd->state_wait,
> + (brd->state & BOARD_READY));
> +
> + if (rc)
> + return rc;
> +
> + spin_lock_irqsave(&brd->bd_lock, lock_flags);
> +
> + /* The wait above should guarantee this cannot happen */
> + if (brd->state != BOARD_READY) {
> + spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> + return -EIO;
> + }
> +
> + /* If opened device is greater than our number of ports, bail. */
> + if (MINOR(tty_devnum(tty)) > brd->nasync) {
> + spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> + return -EIO;
> + }
> +
> + ch = brd->channels[minor];
> + if (!ch) {
> + spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> + return -EIO;
> + }
> +
> + /* Grab channel lock */
> + spin_lock_irqsave(&ch->ch_lock, lock_flags2);
> +
> + /* Figure out our type */
> + if (major == brd->dgap_serial_major) {
> + un = &brd->channels[minor]->ch_tun;
> + un->un_type = DGAP_SERIAL;
> + } else if (major == brd->dgap_transparent_print_major) {
> + un = &brd->channels[minor]->ch_pun;
> + un->un_type = DGAP_PRINT;
> + } else {
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> + spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> + return -EIO;
> + }
> +
> + /* Store our unit into driver_data, so we always have it available. */
> + tty->driver_data = un;
> +
> + /*
> + * Error if channel info pointer is NULL.
> + */
> + bs = ch->ch_bs;
> + if (!bs) {
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> + spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> + return -EIO;
> + }
> +
> + /*
> + * Initialize tty's
> + */
> + if (!(un->un_flags & UN_ISOPEN)) {
> + /* Store important variables. */
> + un->un_tty = tty;
> +
> + /* Maybe do something here to the TTY struct as well? */
> + }
> +
> + /*
> + * Initialize if neither terminal or printer is open.
> + */
> + if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) {
> +
> + ch->ch_mforce = 0;
> + ch->ch_mval = 0;
> +
> + /*
> + * Flush input queue.
> + */
> + head = readw(&(bs->rx_head));
> + writew(head, &(bs->rx_tail));
> +
> + ch->ch_flags = 0;
> + ch->pscan_state = 0;
> + ch->pscan_savechar = 0;
> +
> + ch->ch_c_cflag = tty->termios.c_cflag;
> + ch->ch_c_iflag = tty->termios.c_iflag;
> + ch->ch_c_oflag = tty->termios.c_oflag;
> + ch->ch_c_lflag = tty->termios.c_lflag;
> + ch->ch_startc = tty->termios.c_cc[VSTART];
> + ch->ch_stopc = tty->termios.c_cc[VSTOP];
> +
> + /* TODO: flush our TTY struct here? */
> + }
> +
> + dgap_carrier(ch);
> + /*
> + * Run param in case we changed anything
> + */
> + dgap_param(ch, brd, un->un_type);
> +
> + /*
> + * follow protocol for opening port
> + */
> +
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> + spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
> +
> + rc = dgap_block_til_ready(tty, file, ch);
> +
> + if (!un->un_tty)
> + return -ENODEV;
> +
> + /* No going back now, increment our unit and channel counters */
> + spin_lock_irqsave(&ch->ch_lock, lock_flags);
> + ch->ch_open_count++;
> + un->un_open_count++;
> + un->un_flags |= (UN_ISOPEN);
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
> +
> + return rc;
> +}
> +
> +/*
> + * dgap_tty_close()
> + *
> + */
> +static void dgap_tty_close(struct tty_struct *tty, struct file *file)
> +{
> + struct ktermios *ts;
> + struct board_t *bd;
> + struct channel_t *ch;
> + struct un_t *un;
> + ulong lock_flags;
>
> if (!tty || tty->magic != TTY_MAGIC)
> return;
> @@ -3471,16 +4595,110 @@ static void dgap_tty_start(struct tty_struct *tty)
> if (!bd || bd->magic != DGAP_BOARD_MAGIC)
> return;
>
> - spin_lock_irqsave(&bd->bd_lock, lock_flags);
> - spin_lock_irqsave(&ch->ch_lock, lock_flags2);
> + ts = &tty->termios;
>
> - dgap_cmdw(ch, RESUMETX, 0, 0);
> + spin_lock_irqsave(&ch->ch_lock, lock_flags);
>
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> + /*
> + * Determine if this is the last close or not - and if we agree about
> + * which type of close it is with the Line Discipline
> + */
> + if ((tty->count == 1) && (un->un_open_count != 1)) {
> + /*
> + * Uh, oh. tty->count is 1, which means that the tty
> + * structure will be freed. un_open_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.
> + */
> + un->un_open_count = 1;
> + }
> +
> + if (--un->un_open_count < 0)
> + un->un_open_count = 0;
> +
> + ch->ch_open_count--;
> +
> + if (ch->ch_open_count && un->un_open_count) {
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
> + return;
> + }
> +
> + /* OK, its the last close on the unit */
> +
> + un->un_flags |= UN_CLOSING;
> +
> + tty->closing = 1;
> +
> + /*
> + * Only officially close channel if count is 0 and
> + * DIGI_PRINTER bit is not set.
> + */
> + if ((ch->ch_open_count == 0) &&
> + !(ch->ch_digi.digi_flags & DIGI_PRINTER)) {
> +
> + ch->ch_flags &= ~(CH_RXBLOCK);
> +
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
> +
> + /* wait for output to drain */
> + /* This will also return if we take an interrupt */
> +
> + dgap_wait_for_drain(tty);
> +
> + dgap_tty_flush_buffer(tty);
> + tty_ldisc_flush(tty);
> +
> + spin_lock_irqsave(&ch->ch_lock, lock_flags);
> +
> + tty->closing = 0;
> +
> + /*
> + * If we have HUPCL set, lower DTR and RTS
> + */
> + if (ch->ch_c_cflag & HUPCL) {
> + ch->ch_mostat &= ~(D_RTS(ch)|D_DTR(ch));
> + dgap_cmdb(ch, SMODEM, 0, D_DTR(ch)|D_RTS(ch), 0);
> +
> + /*
> + * Go to sleep to ensure RTS/DTR
> + * have been dropped for modems to see it.
> + */
> + spin_unlock_irqrestore(&ch->ch_lock,
> + lock_flags);
> +
> + /* .25 second delay for dropping RTS/DTR */
> + schedule_timeout_interruptible(msecs_to_jiffies(250));
> +
> + spin_lock_irqsave(&ch->ch_lock, lock_flags);
> + }
> +
> + ch->pscan_state = 0;
> + ch->pscan_savechar = 0;
> + ch->ch_baud_info = 0;
> +
> + }
> +
> + /*
> + * turn off print device when closing print device.
> + */
> + if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
> + dgap_wmove(ch, ch->ch_digi.digi_offstr,
> + (int) ch->ch_digi.digi_offlen);
> + ch->ch_flags &= ~CH_PRON;
> + }
> +
> + un->un_tty = NULL;
> + un->un_flags &= ~(UN_ISOPEN | UN_CLOSING);
> + tty->driver_data = NULL;
> +
> + wake_up_interruptible(&ch->ch_flags_wait);
> + wake_up_interruptible(&un->un_flags_wait);
> +
> + spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
> }
>
> -static void dgap_tty_stop(struct tty_struct *tty)
> +static void dgap_tty_start(struct tty_struct *tty)
> {
> struct board_t *bd;
> struct channel_t *ch;
> @@ -3506,26 +4724,13 @@ static void dgap_tty_stop(struct tty_struct *tty)
> spin_lock_irqsave(&bd->bd_lock, lock_flags);
> spin_lock_irqsave(&ch->ch_lock, lock_flags2);
>
> - dgap_cmdw(ch, PAUSETX, 0, 0);
> + dgap_cmdw(ch, RESUMETX, 0, 0);
>
> spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> }
>
> -/*
> - * dgap_tty_flush_chars()
> - *
> - * Flush the cook buffer
> - *
> - * Note to self, and any other poor souls who venture here:
> - *
> - * flush in this case DOES NOT mean dispose of the data.
> - * instead, it means "stop buffering and send it if you
> - * haven't already." Just guess how I figured that out... SRW 2-Jun-98
> - *
> - * It is also always called in interrupt context - JAR 8-Sept-99
> - */
> -static void dgap_tty_flush_chars(struct tty_struct *tty)
> +static void dgap_tty_stop(struct tty_struct *tty)
> {
> struct board_t *bd;
> struct channel_t *ch;
> @@ -3551,25 +4756,32 @@ static void dgap_tty_flush_chars(struct tty_struct *tty)
> spin_lock_irqsave(&bd->bd_lock, lock_flags);
> spin_lock_irqsave(&ch->ch_lock, lock_flags2);
>
> - /* TODO: Do something here */
> + dgap_cmdw(ch, PAUSETX, 0, 0);
>
> spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> }
>
> /*
> - * dgap_tty_flush_buffer()
> + * dgap_tty_flush_chars()
> *
> - * Flush Tx buffer (make in == out)
> + * Flush the cook buffer
> + *
> + * Note to self, and any other poor souls who venture here:
> + *
> + * flush in this case DOES NOT mean dispose of the data.
> + * instead, it means "stop buffering and send it if you
> + * haven't already." Just guess how I figured that out... SRW 2-Jun-98
> + *
> + * It is also always called in interrupt context - JAR 8-Sept-99
> */
> -static void dgap_tty_flush_buffer(struct tty_struct *tty)
> +static void dgap_tty_flush_chars(struct tty_struct *tty)
> {
> struct board_t *bd;
> struct channel_t *ch;
> struct un_t *un;
> ulong lock_flags;
> ulong lock_flags2;
> - u16 head;
>
> if (!tty || tty->magic != TTY_MAGIC)
> return;
> @@ -3589,24 +4801,10 @@ static void dgap_tty_flush_buffer(struct tty_struct *tty)
> spin_lock_irqsave(&bd->bd_lock, lock_flags);
> spin_lock_irqsave(&ch->ch_lock, lock_flags2);
>
> - ch->ch_flags &= ~CH_STOP;
> - head = readw(&(ch->ch_bs->tx_head));
> - dgap_cmdw(ch, FLUSHTX, (u16) head, 0);
> - dgap_cmdw(ch, RESUMETX, 0, 0);
> - if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
> - ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
> - wake_up_interruptible(&ch->ch_tun.un_flags_wait);
> - }
> - if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
> - ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
> - wake_up_interruptible(&ch->ch_pun.un_flags_wait);
> - }
> + /* TODO: Do something here */
>
> spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> - if (waitqueue_active(&tty->write_wait))
> - wake_up_interruptible(&tty->write_wait);
> - tty_wakeup(tty);
> }
>
> /*****************************************************************************
> @@ -4000,1614 +5198,173 @@ static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
> }
> }
>
> -static int dgap_alloc_flipbuf(struct board_t *brd)
> -{
> - /*
> - * allocate flip buffer for board.
> - */
> - brd->flipbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
> - if (!brd->flipbuf)
> - return -ENOMEM;
> -
> - brd->flipflagbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
> - if (!brd->flipflagbuf) {
> - kfree(brd->flipbuf);
> - return -ENOMEM;
> - }
> -
> - return 0;
> -}
> -
> -static void dgap_free_flipbuf(struct board_t *brd)
> -{
> - kfree(brd->flipbuf);
> - kfree(brd->flipflagbuf);
> -}
> -
> -/*
> - * Create pr and tty device entries
> - */
> -static int dgap_tty_register_ports(struct board_t *brd)
> -{
> - struct channel_t *ch;
> - int i;
> - int ret;
> -
> - brd->serial_ports = kcalloc(brd->nasync, sizeof(*brd->serial_ports),
> - GFP_KERNEL);
> - if (!brd->serial_ports)
> - return -ENOMEM;
> -
> - brd->printer_ports = kcalloc(brd->nasync, sizeof(*brd->printer_ports),
> - GFP_KERNEL);
> - if (!brd->printer_ports) {
> - ret = -ENOMEM;
> - goto free_serial_ports;
> - }
> -
> - for (i = 0; i < brd->nasync; i++) {
> - tty_port_init(&brd->serial_ports[i]);
> - tty_port_init(&brd->printer_ports[i]);
> - }
> -
> - ch = brd->channels[0];
> - for (i = 0; i < brd->nasync; i++, ch = brd->channels[i]) {
> -
> - struct device *classp;
> -
> - classp = tty_port_register_device(&brd->serial_ports[i],
> - brd->serial_driver,
> - i, NULL);
> -
> - if (IS_ERR(classp)) {
> - ret = PTR_ERR(classp);
> - goto unregister_ttys;
> - }
> -
> - dgap_create_tty_sysfs(&ch->ch_tun, classp);
> - ch->ch_tun.un_sysfs = classp;
> -
> - classp = tty_port_register_device(&brd->printer_ports[i],
> - brd->print_driver,
> - i, NULL);
> -
> - if (IS_ERR(classp)) {
> - ret = PTR_ERR(classp);
> - goto unregister_ttys;
> - }
> -
> - dgap_create_tty_sysfs(&ch->ch_pun, classp);
> - ch->ch_pun.un_sysfs = classp;
> - }
> - dgap_create_ports_sysfiles(brd);
> -
> - return 0;
> -
> -unregister_ttys:
> - while (i >= 0) {
> - ch = brd->channels[i];
> - if (ch->ch_tun.un_sysfs) {
> - dgap_remove_tty_sysfs(ch->ch_tun.un_sysfs);
> - tty_unregister_device(brd->serial_driver, i);
> - }
> -
> - if (ch->ch_pun.un_sysfs) {
> - dgap_remove_tty_sysfs(ch->ch_pun.un_sysfs);
> - tty_unregister_device(brd->print_driver, i);
> - }
> - i--;
> - }
> -
> - for (i = 0; i < brd->nasync; i++) {
> - tty_port_destroy(&brd->serial_ports[i]);
> - tty_port_destroy(&brd->printer_ports[i]);
> - }
> -
> - kfree(brd->printer_ports);
> - brd->printer_ports = NULL;
> -
> -free_serial_ports:
> - kfree(brd->serial_ports);
> - brd->serial_ports = NULL;
> -
> - return ret;
> -}
> -
> -/*
> - * Copies the BIOS code from the user to the board,
> - * and starts the BIOS running.
> - */
> -static void dgap_do_bios_load(struct board_t *brd, const u8 *ubios, int len)
> -{
> - u8 __iomem *addr;
> - uint offset;
> - unsigned int i;
> -
> - if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> - return;
> -
> - addr = brd->re_map_membase;
> -
> - /*
> - * clear POST area
> - */
> - for (i = 0; i < 16; i++)
> - writeb(0, addr + POSTAREA + i);
> -
> - /*
> - * Download bios
> - */
> - offset = 0x1000;
> - memcpy_toio(addr + offset, ubios, len);
> -
> - writel(0x0bf00401, addr);
> - writel(0, (addr + 4));
> -
> - /* Clear the reset, and change states. */
> - writeb(FEPCLR, brd->re_map_port);
> -}
> -
> -/*
> - * Checks to see if the BIOS completed running on the card.
> - */
> -static int dgap_test_bios(struct board_t *brd)
> -{
> - u8 __iomem *addr;
> - u16 word;
> - u16 err1;
> - u16 err2;
> -
> - if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> - return -EINVAL;
> -
> - addr = brd->re_map_membase;
> - word = readw(addr + POSTAREA);
> -
> - /*
> - * It can take 5-6 seconds for a board to
> - * pass the bios self test and post results.
> - * Give it 10 seconds.
> - */
> - brd->wait_for_bios = 0;
> - while (brd->wait_for_bios < 1000) {
> - /* Check to see if BIOS thinks board is good. (GD). */
> - if (word == *(u16 *) "GD")
> - return 0;
> - msleep_interruptible(10);
> - brd->wait_for_bios++;
> - word = readw(addr + POSTAREA);
> - }
> -
> - /* Gave up on board after too long of time taken */
> - err1 = readw(addr + SEQUENCE);
> - err2 = readw(addr + ERROR);
> - dev_warn(&brd->pdev->dev, "%s failed diagnostics. Error #(%x,%x).\n",
> - brd->name, err1, err2);
> - brd->state = BOARD_FAILED;
> - brd->dpastatus = BD_NOBIOS;
> -
> - return -EIO;
> -}
> -
> -/*
> - * Copies the FEP code from the user to the board,
> - * and starts the FEP running.
> - */
> -static void dgap_do_fep_load(struct board_t *brd, const u8 *ufep, int len)
> -{
> - u8 __iomem *addr;
> - uint offset;
> -
> - if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> - return;
> -
> - addr = brd->re_map_membase;
> -
> - /*
> - * Download FEP
> - */
> - offset = 0x1000;
> - memcpy_toio(addr + offset, ufep, len);
> -
> - /*
> - * If board is a concentrator product, we need to give
> - * it its config string describing how the concentrators look.
> - */
> - if ((brd->type == PCX) || (brd->type == PEPC)) {
> - u8 string[100];
> - u8 __iomem *config;
> - u8 *xconfig;
> - unsigned int i = 0;
> -
> - xconfig = dgap_create_config_string(brd, string);
> -
> - /* Write string to board memory */
> - config = addr + CONFIG;
> - for (; i < CONFIGSIZE; i++, config++, xconfig++) {
> - writeb(*xconfig, config);
> - if ((*xconfig & 0xff) == 0xff)
> - break;
> - }
> - }
> -
> - writel(0xbfc01004, (addr + 0xc34));
> - writel(0x3, (addr + 0xc30));
> -
> -}
> -
> -/*
> - * Waits for the FEP to report thats its ready for us to use.
> - */
> -static int dgap_test_fep(struct board_t *brd)
> -{
> - u8 __iomem *addr;
> - u16 word;
> - u16 err1;
> - u16 err2;
> -
> - if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> - return -EINVAL;
> -
> - addr = brd->re_map_membase;
> - word = readw(addr + FEPSTAT);
> -
> - /*
> - * It can take 2-3 seconds for the FEP to
> - * be up and running. Give it 5 secs.
> - */
> - brd->wait_for_fep = 0;
> - while (brd->wait_for_fep < 500) {
> - /* Check to see if FEP is up and running now. */
> - if (word == *(u16 *) "OS") {
> - /*
> - * Check to see if the board can support FEP5+ commands.
> - */
> - word = readw(addr + FEP5_PLUS);
> - if (word == *(u16 *) "5A")
> - brd->bd_flags |= BD_FEP5PLUS;
> -
> - return 0;
> - }
> - msleep_interruptible(10);
> - brd->wait_for_fep++;
> - word = readw(addr + FEPSTAT);
> - }
> -
> - /* Gave up on board after too long of time taken */
> - err1 = readw(addr + SEQUENCE);
> - err2 = readw(addr + ERROR);
> - dev_warn(&brd->pdev->dev,
> - "FEPOS for %s not functioning. Error #(%x,%x).\n",
> - brd->name, err1, err2);
> - brd->state = BOARD_FAILED;
> - brd->dpastatus = BD_NOFEP;
> -
> - return -EIO;
> -}
> -
> -/*
> - * Physically forces the FEP5 card to reset itself.
> - */
> -static void dgap_do_reset_board(struct board_t *brd)
> -{
> - u8 check;
> - u32 check1;
> - u32 check2;
> - unsigned int i;
> -
> - if (!brd || (brd->magic != DGAP_BOARD_MAGIC) ||
> - !brd->re_map_membase || !brd->re_map_port)
> - return;
> -
> - /* FEPRST does not vary among supported boards */
> - writeb(FEPRST, brd->re_map_port);
> -
> - for (i = 0; i <= 1000; i++) {
> - check = readb(brd->re_map_port) & 0xe;
> - if (check == FEPRST)
> - break;
> - udelay(10);
> -
> - }
> - if (i > 1000) {
> - dev_warn(&brd->pdev->dev,
> - "dgap: Board not resetting... Failing board.\n");
> - brd->state = BOARD_FAILED;
> - brd->dpastatus = BD_NOFEP;
> - return;
> - }
> -
> - /*
> - * Make sure there really is memory out there.
> - */
> - writel(0xa55a3cc3, (brd->re_map_membase + LOWMEM));
> - writel(0x5aa5c33c, (brd->re_map_membase + HIGHMEM));
> - check1 = readl(brd->re_map_membase + LOWMEM);
> - check2 = readl(brd->re_map_membase + HIGHMEM);
> -
> - if ((check1 != 0xa55a3cc3) || (check2 != 0x5aa5c33c)) {
> - dev_warn(&brd->pdev->dev,
> - "No memory at %p for board.\n",
> - brd->re_map_membase);
> - brd->state = BOARD_FAILED;
> - brd->dpastatus = BD_NOFEP;
> - return;
> - }
> -}
> -
> -#ifdef DIGI_CONCENTRATORS_SUPPORTED
> -/*
> - * Sends a concentrator image into the FEP5 board.
> - */
> -static void dgap_do_conc_load(struct board_t *brd, u8 *uaddr, int len)
> -{
> - char __iomem *vaddr;
> - u16 offset;
> - struct downld_t *to_dp;
> -
> - if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> - return;
> -
> - vaddr = brd->re_map_membase;
> -
> - offset = readw((u16 *) (vaddr + DOWNREQ));
> - to_dp = (struct downld_t *) (vaddr + (int) offset);
> - memcpy_toio(to_dp, uaddr, len);
> -
> - /* Tell card we have data for it */
> - writew(0, vaddr + (DOWNREQ));
> -
> - brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS;
> -}
> -#endif
> -
> -#define EXPANSION_ROM_SIZE (64 * 1024)
> -#define FEP5_ROM_MAGIC (0xFEFFFFFF)
> -
> -static void dgap_get_vpd(struct board_t *brd)
> -{
> - u32 magic;
> - u32 base_offset;
> - u16 rom_offset;
> - u16 vpd_offset;
> - u16 image_length;
> - u16 i;
> - u8 byte1;
> - u8 byte2;
> -
> - /*
> - * Poke the magic number at the PCI Rom Address location.
> - * If VPD is supported, the value read from that address
> - * will be non-zero.
> - */
> - magic = FEP5_ROM_MAGIC;
> - pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
> - pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
> -
> - /* VPD not supported, bail */
> - if (!magic)
> - return;
> -
> - /*
> - * To get to the OTPROM memory, we have to send the boards base
> - * address or'ed with 1 into the PCI Rom Address location.
> - */
> - magic = brd->membase | 0x01;
> - pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
> - pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
> -
> - byte1 = readb(brd->re_map_membase);
> - byte2 = readb(brd->re_map_membase + 1);
> -
> - /*
> - * If the board correctly swapped to the OTPROM memory,
> - * the first 2 bytes (header) should be 0x55, 0xAA
> - */
> - if (byte1 == 0x55 && byte2 == 0xAA) {
> -
> - base_offset = 0;
> -
> - /*
> - * We have to run through all the OTPROM memory looking
> - * for the VPD offset.
> - */
> - while (base_offset <= EXPANSION_ROM_SIZE) {
> -
> - /*
> - * Lots of magic numbers here.
> - *
> - * The VPD offset is located inside the ROM Data
> - * Structure.
> - *
> - * We also have to remember the length of each
> - * ROM Data Structure, so we can "hop" to the next
> - * entry if the VPD isn't in the current
> - * ROM Data Structure.
> - */
> - rom_offset = readw(brd->re_map_membase +
> - base_offset + 0x18);
> - image_length = readw(brd->re_map_membase +
> - rom_offset + 0x10) * 512;
> - vpd_offset = readw(brd->re_map_membase +
> - rom_offset + 0x08);
> -
> - /* Found the VPD entry */
> - if (vpd_offset)
> - break;
> -
> - /* We didn't find a VPD entry, go to next ROM entry. */
> - base_offset += image_length;
> -
> - byte1 = readb(brd->re_map_membase + base_offset);
> - byte2 = readb(brd->re_map_membase + base_offset + 1);
> -
> - /*
> - * If the new ROM offset doesn't have 0x55, 0xAA
> - * as its header, we have run out of ROM.
> - */
> - if (byte1 != 0x55 || byte2 != 0xAA)
> - break;
> - }
> -
> - /*
> - * If we have a VPD offset, then mark the board
> - * as having a valid VPD, and copy VPDSIZE (512) bytes of
> - * that VPD to the buffer we have in our board structure.
> - */
> - if (vpd_offset) {
> - brd->bd_flags |= BD_HAS_VPD;
> - for (i = 0; i < VPDSIZE; i++) {
> - brd->vpd[i] = readb(brd->re_map_membase +
> - vpd_offset + i);
> - }
> - }
> - }
> -
> - /*
> - * We MUST poke the magic number at the PCI Rom Address location again.
> - * This makes the card report the regular board memory back to us,
> - * rather than the OTPROM memory.
> - */
> - magic = FEP5_ROM_MAGIC;
> - pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
> -}
> -
> -/*
> - * Our board poller function.
> - */
> -static void dgap_poll_tasklet(unsigned long data)
> -{
> - struct board_t *bd = (struct board_t *) data;
> - ulong lock_flags;
> - char __iomem *vaddr;
> - u16 head, tail;
> -
> - if (!bd || (bd->magic != DGAP_BOARD_MAGIC))
> - return;
> -
> - if (bd->inhibit_poller)
> - return;
> -
> - spin_lock_irqsave(&bd->bd_lock, lock_flags);
> -
> - vaddr = bd->re_map_membase;
> -
> - /*
> - * If board is ready, parse deeper to see if there is anything to do.
> - */
> - if (bd->state == BOARD_READY) {
> -
> - struct ev_t __iomem *eaddr;
> -
> - if (!bd->re_map_membase) {
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> - return;
> - }
> - if (!bd->re_map_port) {
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> - return;
> - }
> -
> - if (!bd->nasync)
> - goto out;
> -
> - eaddr = (struct ev_t __iomem *) (vaddr + EVBUF);
> -
> - /* Get our head and tail */
> - head = readw(&(eaddr->ev_head));
> - tail = readw(&(eaddr->ev_tail));
> -
> - /*
> - * If there is an event pending. Go service it.
> - */
> - if (head != tail) {
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> - dgap_event(bd);
> - spin_lock_irqsave(&bd->bd_lock, lock_flags);
> - }
> -
> -out:
> - /*
> - * If board is doing interrupts, ACK the interrupt.
> - */
> - if (bd && bd->intr_running)
> - readb(bd->re_map_port + 2);
> -
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> - return;
> - }
> -
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> -}
> -
> -/*=======================================================================
> - *
> - * dgap_cmdb - Sends a 2 byte command to the FEP.
> - *
> - * ch - Pointer to channel structure.
> - * cmd - Command to be sent.
> - * byte1 - Integer containing first byte to be sent.
> - * byte2 - Integer containing second byte to be sent.
> - * ncmds - Wait until ncmds or fewer cmds are left
> - * in the cmd buffer before returning.
> - *
> - *=======================================================================*/
> -static void dgap_cmdb(struct channel_t *ch, u8 cmd, u8 byte1,
> - u8 byte2, uint ncmds)
> -{
> - char __iomem *vaddr;
> - struct __iomem cm_t *cm_addr;
> - uint count;
> - uint n;
> - u16 head;
> - u16 tail;
> -
> - if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> - return;
> -
> - /*
> - * Check if board is still alive.
> - */
> - if (ch->ch_bd->state == BOARD_FAILED)
> - return;
> -
> - /*
> - * Make sure the pointers are in range before
> - * writing to the FEP memory.
> - */
> - vaddr = ch->ch_bd->re_map_membase;
> -
> - if (!vaddr)
> - return;
> -
> - cm_addr = (struct cm_t __iomem *) (vaddr + CMDBUF);
> - head = readw(&(cm_addr->cm_head));
> -
> - /*
> - * Forget it if pointers out of range.
> - */
> - if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
> - ch->ch_bd->state = BOARD_FAILED;
> - return;
> - }
> -
> - /*
> - * Put the data in the circular command buffer.
> - */
> - writeb(cmd, (vaddr + head + CMDSTART + 0));
> - writeb((u8) ch->ch_portnum, (vaddr + head + CMDSTART + 1));
> - writeb(byte1, (vaddr + head + CMDSTART + 2));
> - writeb(byte2, (vaddr + head + CMDSTART + 3));
> -
> - head = (head + 4) & (CMDMAX - CMDSTART - 4);
> -
> - writew(head, &(cm_addr->cm_head));
> -
> - /*
> - * Wait if necessary before updating the head
> - * pointer to limit the number of outstanding
> - * commands to the FEP. If the time spent waiting
> - * is outlandish, declare the FEP dead.
> - */
> - for (count = dgap_count ;;) {
> -
> - head = readw(&(cm_addr->cm_head));
> - tail = readw(&(cm_addr->cm_tail));
> -
> - n = (head - tail) & (CMDMAX - CMDSTART - 4);
> -
> - if (n <= ncmds * sizeof(struct cm_t))
> - break;
> -
> - if (--count == 0) {
> - ch->ch_bd->state = BOARD_FAILED;
> - return;
> - }
> - udelay(10);
> - }
> -}
> -
> -/*=======================================================================
> - *
> - * dgap_cmdw - Sends a 1 word command to the FEP.
> - *
> - * ch - Pointer to channel structure.
> - * cmd - Command to be sent.
> - * word - Integer containing word to be sent.
> - * ncmds - Wait until ncmds or fewer cmds are left
> - * in the cmd buffer before returning.
> - *
> - *=======================================================================*/
> -static void dgap_cmdw(struct channel_t *ch, u8 cmd, u16 word, uint ncmds)
> -{
> - char __iomem *vaddr;
> - struct __iomem cm_t *cm_addr;
> - uint count;
> - uint n;
> - u16 head;
> - u16 tail;
> -
> - if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> - return;
> -
> - /*
> - * Check if board is still alive.
> - */
> - if (ch->ch_bd->state == BOARD_FAILED)
> - return;
> -
> - /*
> - * Make sure the pointers are in range before
> - * writing to the FEP memory.
> - */
> - vaddr = ch->ch_bd->re_map_membase;
> - if (!vaddr)
> - return;
> -
> - cm_addr = (struct cm_t __iomem *) (vaddr + CMDBUF);
> - head = readw(&(cm_addr->cm_head));
> -
> - /*
> - * Forget it if pointers out of range.
> - */
> - if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
> - ch->ch_bd->state = BOARD_FAILED;
> - return;
> - }
> -
> - /*
> - * Put the data in the circular command buffer.
> - */
> - writeb(cmd, (vaddr + head + CMDSTART + 0));
> - writeb((u8) ch->ch_portnum, (vaddr + head + CMDSTART + 1));
> - writew((u16) word, (vaddr + head + CMDSTART + 2));
> -
> - head = (head + 4) & (CMDMAX - CMDSTART - 4);
> -
> - writew(head, &(cm_addr->cm_head));
> -
> - /*
> - * Wait if necessary before updating the head
> - * pointer to limit the number of outstanding
> - * commands to the FEP. If the time spent waiting
> - * is outlandish, declare the FEP dead.
> - */
> - for (count = dgap_count ;;) {
> -
> - head = readw(&(cm_addr->cm_head));
> - tail = readw(&(cm_addr->cm_tail));
> -
> - n = (head - tail) & (CMDMAX - CMDSTART - 4);
> -
> - if (n <= ncmds * sizeof(struct cm_t))
> - break;
> -
> - if (--count == 0) {
> - ch->ch_bd->state = BOARD_FAILED;
> - return;
> - }
> - udelay(10);
> - }
> -}
> -
> -/*=======================================================================
> - *
> - * dgap_cmdw_ext - Sends a extended word command to the FEP.
> - *
> - * ch - Pointer to channel structure.
> - * cmd - Command to be sent.
> - * word - Integer containing word to be sent.
> - * ncmds - Wait until ncmds or fewer cmds are left
> - * in the cmd buffer before returning.
> - *
> - *=======================================================================*/
> -static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds)
> -{
> - char __iomem *vaddr;
> - struct __iomem cm_t *cm_addr;
> - uint count;
> - uint n;
> - u16 head;
> - u16 tail;
> -
> - if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> - return;
> -
> - /*
> - * Check if board is still alive.
> - */
> - if (ch->ch_bd->state == BOARD_FAILED)
> - return;
> -
> - /*
> - * Make sure the pointers are in range before
> - * writing to the FEP memory.
> - */
> - vaddr = ch->ch_bd->re_map_membase;
> - if (!vaddr)
> - return;
> -
> - cm_addr = (struct cm_t __iomem *) (vaddr + CMDBUF);
> - head = readw(&(cm_addr->cm_head));
> -
> - /*
> - * Forget it if pointers out of range.
> - */
> - if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
> - ch->ch_bd->state = BOARD_FAILED;
> - return;
> - }
> -
> - /*
> - * Put the data in the circular command buffer.
> - */
> -
> - /* Write an FF to tell the FEP that we want an extended command */
> - writeb((u8) 0xff, (vaddr + head + CMDSTART + 0));
> -
> - writeb((u8) ch->ch_portnum, (vaddr + head + CMDSTART + 1));
> - writew((u16) cmd, (vaddr + head + CMDSTART + 2));
> -
> - /*
> - * If the second part of the command won't fit,
> - * put it at the beginning of the circular buffer.
> - */
> - if (((head + 4) >= ((CMDMAX - CMDSTART)) || (head & 03)))
> - writew((u16) word, (vaddr + CMDSTART));
> - else
> - writew((u16) word, (vaddr + head + CMDSTART + 4));
> -
> - head = (head + 8) & (CMDMAX - CMDSTART - 4);
> -
> - writew(head, &(cm_addr->cm_head));
> -
> - /*
> - * Wait if necessary before updating the head
> - * pointer to limit the number of outstanding
> - * commands to the FEP. If the time spent waiting
> - * is outlandish, declare the FEP dead.
> - */
> - for (count = dgap_count ;;) {
> -
> - head = readw(&(cm_addr->cm_head));
> - tail = readw(&(cm_addr->cm_tail));
> -
> - n = (head - tail) & (CMDMAX - CMDSTART - 4);
> -
> - if (n <= ncmds * sizeof(struct cm_t))
> - break;
> -
> - if (--count == 0) {
> - ch->ch_bd->state = BOARD_FAILED;
> - return;
> - }
> - udelay(10);
> - }
> -}
> +static const struct tty_operations dgap_tty_ops = {
> + .open = dgap_tty_open,
> + .close = dgap_tty_close,
> + .write = dgap_tty_write,
> + .write_room = dgap_tty_write_room,
> + .flush_buffer = dgap_tty_flush_buffer,
> + .chars_in_buffer = dgap_tty_chars_in_buffer,
> + .flush_chars = dgap_tty_flush_chars,
> + .ioctl = dgap_tty_ioctl,
> + .set_termios = dgap_tty_set_termios,
> + .stop = dgap_tty_stop,
> + .start = dgap_tty_start,
> + .throttle = dgap_tty_throttle,
> + .unthrottle = dgap_tty_unthrottle,
> + .hangup = dgap_tty_hangup,
> + .put_char = dgap_tty_put_char,
> + .tiocmget = dgap_tty_tiocmget,
> + .tiocmset = dgap_tty_tiocmset,
> + .break_ctl = dgap_tty_send_break,
> + .wait_until_sent = dgap_tty_wait_until_sent,
> + .send_xchar = dgap_tty_send_xchar
> +};
>
> -/*=======================================================================
> - *
> - * dgap_wmove - Write data to FEP buffer.
> +/************************************************************************
> *
> - * ch - Pointer to channel structure.
> - * buf - Poiter to characters to be moved.
> - * cnt - Number of characters to move.
> + * TTY Initialization/Cleanup Functions
> *
> - *=======================================================================*/
> -static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt)
> -{
> - int n;
> - char __iomem *taddr;
> - struct bs_t __iomem *bs;
> - u16 head;
> -
> - if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> - return;
> -
> - /*
> - * Check parameters.
> - */
> - bs = ch->ch_bs;
> - head = readw(&(bs->tx_head));
> -
> - /*
> - * If pointers are out of range, just return.
> - */
> - if ((cnt > ch->ch_tsize) ||
> - (unsigned)(head - ch->ch_tstart) >= ch->ch_tsize)
> - return;
> -
> - /*
> - * If the write wraps over the top of the circular buffer,
> - * move the portion up to the wrap point, and reset the
> - * pointers to the bottom.
> - */
> - n = ch->ch_tstart + ch->ch_tsize - head;
> -
> - if (cnt >= n) {
> - cnt -= n;
> - taddr = ch->ch_taddr + head;
> - memcpy_toio(taddr, buf, n);
> - head = ch->ch_tstart;
> - buf += n;
> - }
> -
> - /*
> - * Move rest of data.
> - */
> - taddr = ch->ch_taddr + head;
> - n = cnt;
> - memcpy_toio(taddr, buf, n);
> - head += cnt;
> -
> - writew(head, &(bs->tx_head));
> -}
> -
> -/*
> - * Retrives the current custom baud rate from FEP memory,
> - * and returns it back to the user.
> - * Returns 0 on error.
> - */
> -static uint dgap_get_custom_baud(struct channel_t *ch)
> -{
> - u8 __iomem *vaddr;
> - ulong offset;
> - uint value;
> -
> - if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> - return 0;
> -
> - if (!ch->ch_bd || ch->ch_bd->magic != DGAP_BOARD_MAGIC)
> - return 0;
> -
> - if (!(ch->ch_bd->bd_flags & BD_FEP5PLUS))
> - return 0;
> -
> - vaddr = ch->ch_bd->re_map_membase;
> -
> - if (!vaddr)
> - return 0;
> -
> - /*
> - * Go get from fep mem, what the fep
> - * believes the custom baud rate is.
> - */
> - offset = (ioread16(vaddr + ECS_SEG) << 4) + (ch->ch_portnum * 0x28)
> - + LINE_SPEED;
> -
> - value = readw(vaddr + offset);
> - return value;
> -}
> + ************************************************************************/
>
> /*
> - * Calls the firmware to reset this channel.
> - */
> -static void dgap_firmware_reset_port(struct channel_t *ch)
> -{
> - dgap_cmdb(ch, CHRESET, 0, 0, 0);
> -
> - /*
> - * Now that the channel is reset, we need to make sure
> - * all the current settings get reapplied to the port
> - * in the firmware.
> - *
> - * So we will set the driver's cache of firmware
> - * settings all to 0, and then call param.
> - */
> - ch->ch_fepiflag = 0;
> - ch->ch_fepcflag = 0;
> - ch->ch_fepoflag = 0;
> - ch->ch_fepstartc = 0;
> - ch->ch_fepstopc = 0;
> - ch->ch_fepastartc = 0;
> - ch->ch_fepastopc = 0;
> - ch->ch_mostat = 0;
> - ch->ch_hflow = 0;
> -}
> -
> -/*=======================================================================
> - *
> - * dgap_param - Set Digi parameters.
> - *
> - * struct tty_struct * - TTY for port.
> + * dgap_tty_register()
> *
> - *=======================================================================*/
> -static int dgap_param(struct channel_t *ch, struct board_t *bd, u32 un_type)
> + * Init the tty subsystem for this board.
> + */
> +static int dgap_tty_register(struct board_t *brd)
> {
> - u16 head;
> - u16 cflag;
> - u16 iflag;
> - u8 mval;
> - u8 hflow;
> -
> - /*
> - * If baud rate is zero, flush queues, and set mval to drop DTR.
> - */
> - if ((ch->ch_c_cflag & (CBAUD)) == 0) {
> -
> - /* flush rx */
> - head = readw(&(ch->ch_bs->rx_head));
> - writew(head, &(ch->ch_bs->rx_tail));
> -
> - /* flush tx */
> - head = readw(&(ch->ch_bs->tx_head));
> - writew(head, &(ch->ch_bs->tx_tail));
> -
> - ch->ch_flags |= (CH_BAUD0);
> -
> - /* Drop RTS and DTR */
> - ch->ch_mval &= ~(D_RTS(ch)|D_DTR(ch));
> - mval = D_DTR(ch) | D_RTS(ch);
> - ch->ch_baud_info = 0;
> -
> - } else if (ch->ch_custom_speed && (bd->bd_flags & BD_FEP5PLUS)) {
> - /*
> - * Tell the fep to do the command
> - */
> -
> - dgap_cmdw_ext(ch, 0xff01, ch->ch_custom_speed, 0);
> -
> - /*
> - * Now go get from fep mem, what the fep
> - * believes the custom baud rate is.
> - */
> - ch->ch_custom_speed = dgap_get_custom_baud(ch);
> - ch->ch_baud_info = ch->ch_custom_speed;
> -
> - /* Handle transition from B0 */
> - if (ch->ch_flags & CH_BAUD0) {
> - ch->ch_flags &= ~(CH_BAUD0);
> - ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
> - }
> - mval = D_DTR(ch) | D_RTS(ch);
> -
> - } else {
> - /*
> - * Set baud rate, character size, and parity.
> - */
> -
> -
> - int iindex = 0;
> - int jindex = 0;
> - int baud = 0;
> -
> - ulong bauds[4][16] = {
> - { /* slowbaud */
> - 0, 50, 75, 110,
> - 134, 150, 200, 300,
> - 600, 1200, 1800, 2400,
> - 4800, 9600, 19200, 38400 },
> - { /* slowbaud & CBAUDEX */
> - 0, 57600, 115200, 230400,
> - 460800, 150, 200, 921600,
> - 600, 1200, 1800, 2400,
> - 4800, 9600, 19200, 38400 },
> - { /* fastbaud */
> - 0, 57600, 76800, 115200,
> - 14400, 57600, 230400, 76800,
> - 115200, 230400, 28800, 460800,
> - 921600, 9600, 19200, 38400 },
> - { /* fastbaud & CBAUDEX */
> - 0, 57600, 115200, 230400,
> - 460800, 150, 200, 921600,
> - 600, 1200, 1800, 2400,
> - 4800, 9600, 19200, 38400 }
> - };
> -
> - /*
> - * Only use the TXPrint baud rate if the
> - * terminal unit is NOT open
> - */
> - if (!(ch->ch_tun.un_flags & UN_ISOPEN) &&
> - un_type == DGAP_PRINT)
> - baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
> - else
> - baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
> -
> - if (ch->ch_c_cflag & CBAUDEX)
> - iindex = 1;
> -
> - if (ch->ch_digi.digi_flags & DIGI_FAST)
> - iindex += 2;
> -
> - jindex = baud;
> -
> - if ((iindex >= 0) && (iindex < 4) &&
> - (jindex >= 0) && (jindex < 16))
> - baud = bauds[iindex][jindex];
> - else
> - baud = 0;
> -
> - if (baud == 0)
> - baud = 9600;
> -
> - ch->ch_baud_info = baud;
> -
> - /*
> - * CBAUD has bit position 0x1000 set these days to
> - * indicate Linux baud rate remap.
> - * We use a different bit assignment for high speed.
> - * Clear this bit out while grabbing the parts of
> - * "cflag" we want.
> - */
> - cflag = ch->ch_c_cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB |
> - CSTOPB | CSIZE);
> -
> - /*
> - * HUPCL bit is used by FEP to indicate fast baud
> - * table is to be used.
> - */
> - if ((ch->ch_digi.digi_flags & DIGI_FAST) ||
> - (ch->ch_c_cflag & CBAUDEX))
> - cflag |= HUPCL;
> -
> - if ((ch->ch_c_cflag & CBAUDEX) &&
> - !(ch->ch_digi.digi_flags & DIGI_FAST)) {
> - /*
> - * The below code is trying to guarantee that only
> - * baud rates 115200, 230400, 460800, 921600 are
> - * remapped. We use exclusive or because the various
> - * baud rates share common bit positions and therefore
> - * can't be tested for easily.
> - */
> - tcflag_t tcflag = (ch->ch_c_cflag & CBAUD) | CBAUDEX;
> - int baudpart = 0;
> -
> - /*
> - * Map high speed requests to index
> - * into FEP's baud table
> - */
> - switch (tcflag) {
> - case B57600:
> - baudpart = 1;
> - break;
> -#ifdef B76800
> - case B76800:
> - baudpart = 2;
> - break;
> -#endif
> - case B115200:
> - baudpart = 3;
> - break;
> - case B230400:
> - baudpart = 9;
> - break;
> - case B460800:
> - baudpart = 11;
> - break;
> -#ifdef B921600
> - case B921600:
> - baudpart = 12;
> - break;
> -#endif
> - default:
> - baudpart = 0;
> - }
> -
> - if (baudpart)
> - cflag = (cflag & ~(CBAUD | CBAUDEX)) | baudpart;
> - }
> -
> - cflag &= 0xffff;
> -
> - if (cflag != ch->ch_fepcflag) {
> - ch->ch_fepcflag = (u16) (cflag & 0xffff);
> -
> - /*
> - * Okay to have channel and board
> - * locks held calling this
> - */
> - dgap_cmdw(ch, SCFLAG, (u16) cflag, 0);
> - }
> -
> - /* Handle transition from B0 */
> - if (ch->ch_flags & CH_BAUD0) {
> - ch->ch_flags &= ~(CH_BAUD0);
> - ch->ch_mval |= (D_RTS(ch)|D_DTR(ch));
> - }
> - mval = D_DTR(ch) | D_RTS(ch);
> - }
> -
> - /*
> - * Get input flags.
> - */
> - iflag = ch->ch_c_iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK |
> - INPCK | ISTRIP | IXON | IXANY | IXOFF);
> -
> - if ((ch->ch_startc == _POSIX_VDISABLE) ||
> - (ch->ch_stopc == _POSIX_VDISABLE)) {
> - iflag &= ~(IXON | IXOFF);
> - ch->ch_c_iflag &= ~(IXON | IXOFF);
> - }
> -
> - /*
> - * Only the IBM Xr card can switch between
> - * 232 and 422 modes on the fly
> - */
> - if (bd->device == PCI_DEV_XR_IBM_DID) {
> - if (ch->ch_digi.digi_flags & DIGI_422)
> - dgap_cmdb(ch, SCOMMODE, MODE_422, 0, 0);
> - else
> - dgap_cmdb(ch, SCOMMODE, MODE_232, 0, 0);
> - }
> + int rc;
>
> - if (ch->ch_digi.digi_flags & DIGI_ALTPIN)
> - iflag |= IALTPIN;
> + brd->serial_driver = tty_alloc_driver(MAXPORTS, 0);
> + if (IS_ERR(brd->serial_driver))
> + return PTR_ERR(brd->serial_driver);
>
> - if (iflag != ch->ch_fepiflag) {
> - ch->ch_fepiflag = iflag;
> + snprintf(brd->serial_name, MAXTTYNAMELEN, "tty_dgap_%d_",
> + brd->boardnum);
> + brd->serial_driver->name = brd->serial_name;
> + brd->serial_driver->name_base = 0;
> + brd->serial_driver->major = 0;
> + brd->serial_driver->minor_start = 0;
> + brd->serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
> + brd->serial_driver->subtype = SERIAL_TYPE_NORMAL;
> + brd->serial_driver->init_termios = dgap_default_termios;
> + brd->serial_driver->driver_name = DRVSTR;
> + brd->serial_driver->flags = (TTY_DRIVER_REAL_RAW |
> + TTY_DRIVER_DYNAMIC_DEV |
> + TTY_DRIVER_HARDWARE_BREAK);
>
> - /* Okay to have channel and board locks held calling this */
> - dgap_cmdw(ch, SIFLAG, (u16) ch->ch_fepiflag, 0);
> + /* The kernel wants space to store pointers to tty_structs */
> + brd->serial_driver->ttys =
> + kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
> + if (!brd->serial_driver->ttys) {
> + rc = -ENOMEM;
> + goto free_serial_drv;
> }
>
> /*
> - * Select hardware handshaking.
> + * Entry points for driver. Called by the kernel from
> + * tty_io.c and n_tty.c.
> */
> - hflow = 0;
> -
> - if (ch->ch_c_cflag & CRTSCTS)
> - hflow |= (D_RTS(ch) | D_CTS(ch));
> - if (ch->ch_digi.digi_flags & RTSPACE)
> - hflow |= D_RTS(ch);
> - if (ch->ch_digi.digi_flags & DTRPACE)
> - hflow |= D_DTR(ch);
> - if (ch->ch_digi.digi_flags & CTSPACE)
> - hflow |= D_CTS(ch);
> - if (ch->ch_digi.digi_flags & DSRPACE)
> - hflow |= D_DSR(ch);
> - if (ch->ch_digi.digi_flags & DCDPACE)
> - hflow |= D_CD(ch);
> -
> - if (hflow != ch->ch_hflow) {
> - ch->ch_hflow = hflow;
> -
> - /* Okay to have channel and board locks held calling this */
> - dgap_cmdb(ch, SHFLOW, (u8) hflow, 0xff, 0);
> - }
> + tty_set_operations(brd->serial_driver, &dgap_tty_ops);
>
> /*
> - * Set RTS and/or DTR Toggle if needed,
> - * but only if product is FEP5+ based.
> + * If we're doing transparent print, we have to do all of the above
> + * again, separately so we don't get the LD confused about what major
> + * we are when we get into the dgap_tty_open() routine.
> */
> - if (bd->bd_flags & BD_FEP5PLUS) {
> - u16 hflow2 = 0;
> -
> - if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE)
> - hflow2 |= (D_RTS(ch));
> - if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE)
> - hflow2 |= (D_DTR(ch));
> -
> - dgap_cmdw_ext(ch, 0xff03, hflow2, 0);
> + brd->print_driver = tty_alloc_driver(MAXPORTS, 0);
> + if (IS_ERR(brd->print_driver)) {
> + rc = PTR_ERR(brd->print_driver);
> + goto free_serial_drv;
> }
>
> - /*
> - * Set modem control lines.
> - */
> -
> - mval ^= ch->ch_mforce & (mval ^ ch->ch_mval);
> -
> - if (ch->ch_mostat ^ mval) {
> - ch->ch_mostat = mval;
> + snprintf(brd->print_name, MAXTTYNAMELEN, "pr_dgap_%d_",
> + brd->boardnum);
> + brd->print_driver->name = brd->print_name;
> + brd->print_driver->name_base = 0;
> + brd->print_driver->major = 0;
> + brd->print_driver->minor_start = 0;
> + brd->print_driver->type = TTY_DRIVER_TYPE_SERIAL;
> + brd->print_driver->subtype = SERIAL_TYPE_NORMAL;
> + brd->print_driver->init_termios = dgap_default_termios;
> + brd->print_driver->driver_name = DRVSTR;
> + brd->print_driver->flags = (TTY_DRIVER_REAL_RAW |
> + TTY_DRIVER_DYNAMIC_DEV |
> + TTY_DRIVER_HARDWARE_BREAK);
>
> - /* Okay to have channel and board locks held calling this */
> - dgap_cmdb(ch, SMODEM, (u8) mval, D_RTS(ch)|D_DTR(ch), 0);
> + /* The kernel wants space to store pointers to tty_structs */
> + brd->print_driver->ttys =
> + kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
> + if (!brd->print_driver->ttys) {
> + rc = -ENOMEM;
> + goto free_print_drv;
> }
>
> /*
> - * Read modem signals, and then call carrier function.
> + * Entry points for driver. Called by the kernel from
> + * tty_io.c and n_tty.c.
> */
> - ch->ch_mistat = readb(&(ch->ch_bs->m_stat));
> - dgap_carrier(ch);
> + tty_set_operations(brd->print_driver, &dgap_tty_ops);
>
> - /*
> - * Set the start and stop characters.
> - */
> - if (ch->ch_startc != ch->ch_fepstartc ||
> - ch->ch_stopc != ch->ch_fepstopc) {
> - ch->ch_fepstartc = ch->ch_startc;
> - ch->ch_fepstopc = ch->ch_stopc;
> + /* Register tty devices */
> + rc = tty_register_driver(brd->serial_driver);
> + if (rc < 0)
> + goto free_print_drv;
>
> - /* Okay to have channel and board locks held calling this */
> - dgap_cmdb(ch, SFLOWC, ch->ch_fepstartc, ch->ch_fepstopc, 0);
> - }
> + /* Register Transparent Print devices */
> + rc = tty_register_driver(brd->print_driver);
> + if (rc < 0)
> + goto unregister_serial_drv;
>
> - /*
> - * Set the Auxiliary start and stop characters.
> - */
> - if (ch->ch_astartc != ch->ch_fepastartc ||
> - ch->ch_astopc != ch->ch_fepastopc) {
> - ch->ch_fepastartc = ch->ch_astartc;
> - ch->ch_fepastopc = ch->ch_astopc;
> + dgap_boards_by_major[brd->serial_driver->major] = brd;
> + brd->dgap_serial_major = brd->serial_driver->major;
>
> - /* Okay to have channel and board locks held calling this */
> - dgap_cmdb(ch, SAFLOWC, ch->ch_fepastartc, ch->ch_fepastopc, 0);
> - }
> + dgap_boards_by_major[brd->print_driver->major] = brd;
> + brd->dgap_transparent_print_major = brd->print_driver->major;
>
> return 0;
> -}
> -
> -/*
> - * dgap_parity_scan()
> - *
> - * Convert the FEP5 way of reporting parity errors and breaks into
> - * the Linux line discipline way.
> - */
> -static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf,
> - unsigned char *fbuf, int *len)
> -{
> - int l = *len;
> - int count = 0;
> - unsigned char *in, *cout, *fout;
> - unsigned char c;
>
> - in = cbuf;
> - cout = cbuf;
> - fout = fbuf;
> -
> - if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> - return;
> -
> - while (l--) {
> - c = *in++;
> - switch (ch->pscan_state) {
> - default:
> - /* reset to sanity and fall through */
> - ch->pscan_state = 0;
> -
> - case 0:
> - /* No FF seen yet */
> - if (c == (unsigned char) '\377')
> - /* delete this character from stream */
> - ch->pscan_state = 1;
> - else {
> - *cout++ = c;
> - *fout++ = TTY_NORMAL;
> - count += 1;
> - }
> - break;
> -
> - case 1:
> - /* first FF seen */
> - if (c == (unsigned char) '\377') {
> - /* doubled ff, transform to single ff */
> - *cout++ = c;
> - *fout++ = TTY_NORMAL;
> - count += 1;
> - ch->pscan_state = 0;
> - } else {
> - /* save value examination in next state */
> - ch->pscan_savechar = c;
> - ch->pscan_state = 2;
> - }
> - break;
> -
> - case 2:
> - /* third character of ff sequence */
> -
> - *cout++ = c;
> -
> - if (ch->pscan_savechar == 0x0) {
> -
> - if (c == 0x0) {
> - ch->ch_err_break++;
> - *fout++ = TTY_BREAK;
> - } else {
> - ch->ch_err_parity++;
> - *fout++ = TTY_PARITY;
> - }
> - }
> +unregister_serial_drv:
> + tty_unregister_driver(brd->serial_driver);
> +free_print_drv:
> + put_tty_driver(brd->print_driver);
> +free_serial_drv:
> + put_tty_driver(brd->serial_driver);
>
> - count += 1;
> - ch->pscan_state = 0;
> - }
> - }
> - *len = count;
> + return rc;
> }
>
> -static void dgap_write_wakeup(struct board_t *bd, struct channel_t *ch,
> - struct un_t *un, u32 mask,
> - unsigned long *irq_flags1,
> - unsigned long *irq_flags2)
> +static void dgap_tty_unregister(struct board_t *brd)
> {
> - if (!(un->un_flags & mask))
> - return;
> -
> - un->un_flags &= ~mask;
> -
> - if (!(un->un_flags & UN_ISOPEN))
> - return;
> -
> - if ((un->un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
> - un->un_tty->ldisc->ops->write_wakeup) {
> - spin_unlock_irqrestore(&ch->ch_lock, *irq_flags2);
> - spin_unlock_irqrestore(&bd->bd_lock, *irq_flags1);
> -
> - (un->un_tty->ldisc->ops->write_wakeup)(un->un_tty);
> -
> - spin_lock_irqsave(&bd->bd_lock, *irq_flags1);
> - spin_lock_irqsave(&ch->ch_lock, *irq_flags2);
> - }
> - wake_up_interruptible(&un->un_tty->write_wait);
> - wake_up_interruptible(&un->un_flags_wait);
> + tty_unregister_driver(brd->print_driver);
> + tty_unregister_driver(brd->serial_driver);
> + put_tty_driver(brd->print_driver);
> + put_tty_driver(brd->serial_driver);
> }
>
> -/*=======================================================================
> - *
> - * dgap_event - FEP to host event processing routine.
> - *
> - * bd - Board of current event.
> - *
> - *=======================================================================*/
> -static int dgap_event(struct board_t *bd)
> +static int dgap_alloc_flipbuf(struct board_t *brd)
> {
> - struct channel_t *ch;
> - ulong lock_flags;
> - ulong lock_flags2;
> - struct bs_t __iomem *bs;
> - u8 __iomem *event;
> - u8 __iomem *vaddr;
> - struct ev_t __iomem *eaddr;
> - uint head;
> - uint tail;
> - int port;
> - int reason;
> - int modem;
> - int b1;
> -
> - if (!bd || bd->magic != DGAP_BOARD_MAGIC)
> - return -EIO;
> -
> - spin_lock_irqsave(&bd->bd_lock, lock_flags);
> -
> - vaddr = bd->re_map_membase;
> -
> - if (!vaddr) {
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> - return -EIO;
> - }
> -
> - eaddr = (struct ev_t __iomem *) (vaddr + EVBUF);
> -
> - /* Get our head and tail */
> - head = readw(&(eaddr->ev_head));
> - tail = readw(&(eaddr->ev_tail));
> -
> - /*
> - * Forget it if pointers out of range.
> - */
> -
> - if (head >= EVMAX - EVSTART || tail >= EVMAX - EVSTART ||
> - (head | tail) & 03) {
> - /* Let go of board lock */
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> - return -EIO;
> - }
> -
> /*
> - * Loop to process all the events in the buffer.
> + * allocate flip buffer for board.
> */
> - while (tail != head) {
> -
> - /*
> - * Get interrupt information.
> - */
> -
> - event = bd->re_map_membase + tail + EVSTART;
> -
> - port = ioread8(event);
> - reason = ioread8(event + 1);
> - modem = ioread8(event + 2);
> - b1 = ioread8(event + 3);
> -
> - /*
> - * Make sure the interrupt is valid.
> - */
> - if (port >= bd->nasync)
> - goto next;
> -
> - if (!(reason & (IFMODEM | IFBREAK | IFTLW | IFTEM | IFDATA)))
> - goto next;
> -
> - ch = bd->channels[port];
> -
> - if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
> - goto next;
> -
> - /*
> - * If we have made it here, the event was valid.
> - * Lock down the channel.
> - */
> - spin_lock_irqsave(&ch->ch_lock, lock_flags2);
> -
> - bs = ch->ch_bs;
> -
> - if (!bs) {
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> - goto next;
> - }
> -
> - /*
> - * Process received data.
> - */
> - if (reason & IFDATA) {
> -
> - /*
> - * ALL LOCKS *MUST* BE DROPPED BEFORE CALLING INPUT!
> - * input could send some data to ld, which in turn
> - * could do a callback to one of our other functions.
> - */
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> -
> - dgap_input(ch);
> -
> - spin_lock_irqsave(&bd->bd_lock, lock_flags);
> - spin_lock_irqsave(&ch->ch_lock, lock_flags2);
> -
> - if (ch->ch_flags & CH_RACTIVE)
> - ch->ch_flags |= CH_RENABLE;
> - else
> - writeb(1, &(bs->idata));
> -
> - if (ch->ch_flags & CH_RWAIT) {
> - ch->ch_flags &= ~CH_RWAIT;
> -
> - wake_up_interruptible
> - (&ch->ch_tun.un_flags_wait);
> - }
> - }
> -
> - /*
> - * Process Modem change signals.
> - */
> - if (reason & IFMODEM) {
> - ch->ch_mistat = modem;
> - dgap_carrier(ch);
> - }
> -
> - /*
> - * Process break.
> - */
> - if (reason & IFBREAK) {
> -
> - if (ch->ch_tun.un_tty) {
> - /* A break has been indicated */
> - ch->ch_err_break++;
> - tty_buffer_request_room
> - (ch->ch_tun.un_tty->port, 1);
> - tty_insert_flip_char(ch->ch_tun.un_tty->port,
> - 0, TTY_BREAK);
> - tty_flip_buffer_push(ch->ch_tun.un_tty->port);
> - }
> - }
> -
> - /*
> - * Process Transmit low.
> - */
> - if (reason & IFTLW) {
> - dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_LOW,
> - &lock_flags, &lock_flags2);
> - dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_LOW,
> - &lock_flags, &lock_flags2);
> - if (ch->ch_flags & CH_WLOW) {
> - ch->ch_flags &= ~CH_WLOW;
> - wake_up_interruptible(&ch->ch_flags_wait);
> - }
> - }
> -
> - /*
> - * Process Transmit empty.
> - */
> - if (reason & IFTEM) {
> - dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_EMPTY,
> - &lock_flags, &lock_flags2);
> - dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_EMPTY,
> - &lock_flags, &lock_flags2);
> - if (ch->ch_flags & CH_WEMPTY) {
> - ch->ch_flags &= ~CH_WEMPTY;
> - wake_up_interruptible(&ch->ch_flags_wait);
> - }
> - }
> -
> - spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
> + brd->flipbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
> + if (!brd->flipbuf)
> + return -ENOMEM;
>
> -next:
> - tail = (tail + 4) & (EVMAX - EVSTART - 4);
> + brd->flipflagbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
> + if (!brd->flipflagbuf) {
> + kfree(brd->flipbuf);
> + return -ENOMEM;
> }
>
> - writew(tail, &(eaddr->ev_tail));
> - spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
> -
> return 0;
> }
>
> -static ssize_t dgap_driver_version_show(struct device_driver *ddp, char *buf)
> -{
> - return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
> -}
> -static DRIVER_ATTR(version, S_IRUSR, dgap_driver_version_show, NULL);
> -
> -
> -static ssize_t dgap_driver_boards_show(struct device_driver *ddp, char *buf)
> -{
> - return snprintf(buf, PAGE_SIZE, "%d\n", dgap_numboards);
> -}
> -static DRIVER_ATTR(boards, S_IRUSR, dgap_driver_boards_show, NULL);
> -
> -
> -static ssize_t dgap_driver_maxboards_show(struct device_driver *ddp, char *buf)
> -{
> - return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
> -}
> -static DRIVER_ATTR(maxboards, S_IRUSR, dgap_driver_maxboards_show, NULL);
> -
> -
> -static ssize_t dgap_driver_pollcounter_show(struct device_driver *ddp,
> - char *buf)
> -{
> - return snprintf(buf, PAGE_SIZE, "%ld\n", dgap_poll_counter);
> -}
> -static DRIVER_ATTR(pollcounter, S_IRUSR, dgap_driver_pollcounter_show, NULL);
> -
> -static ssize_t dgap_driver_pollrate_show(struct device_driver *ddp, char *buf)
> -{
> - return snprintf(buf, PAGE_SIZE, "%dms\n", dgap_poll_tick);
> -}
> -
> -static ssize_t dgap_driver_pollrate_store(struct device_driver *ddp,
> - const char *buf, size_t count)
> -{
> - if (sscanf(buf, "%d\n", &dgap_poll_tick) != 1)
> - return -EINVAL;
> - return count;
> -}
> -static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgap_driver_pollrate_show,
> - dgap_driver_pollrate_store);
> -
> -static int dgap_create_driver_sysfiles(struct pci_driver *dgap_driver)
> -{
> - int rc = 0;
> - struct device_driver *driverfs = &dgap_driver->driver;
> -
> - rc |= driver_create_file(driverfs, &driver_attr_version);
> - rc |= driver_create_file(driverfs, &driver_attr_boards);
> - rc |= driver_create_file(driverfs, &driver_attr_maxboards);
> - rc |= driver_create_file(driverfs, &driver_attr_pollrate);
> - rc |= driver_create_file(driverfs, &driver_attr_pollcounter);
> -
> - return rc;
> -}
> -
> -static void dgap_remove_driver_sysfiles(struct pci_driver *dgap_driver)
> +static void dgap_free_flipbuf(struct board_t *brd)
> {
> - struct device_driver *driverfs = &dgap_driver->driver;
> -
> - driver_remove_file(driverfs, &driver_attr_version);
> - driver_remove_file(driverfs, &driver_attr_boards);
> - driver_remove_file(driverfs, &driver_attr_maxboards);
> - driver_remove_file(driverfs, &driver_attr_pollrate);
> - driver_remove_file(driverfs, &driver_attr_pollcounter);
> + kfree(brd->flipbuf);
> + kfree(brd->flipflagbuf);
> }
>
> static struct board_t *dgap_verify_board(struct device *p)
> @@ -5843,39 +5600,6 @@ static ssize_t dgap_ports_txcount_show(struct device *p,
> }
> static DEVICE_ATTR(ports_txcount, S_IRUSR, dgap_ports_txcount_show, NULL);
>
> -/* this function creates the sys files that will export each signal status
> - * to sysfs each value will be put in a separate filename
> - */
> -static void dgap_create_ports_sysfiles(struct board_t *bd)
> -{
> - dev_set_drvdata(&bd->pdev->dev, bd);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_state);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
> - device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
> -}
> -
> -/* removes all the sys files created for that port */
> -static void dgap_remove_ports_sysfiles(struct board_t *bd)
> -{
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
> - device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
> -}
> -
> static ssize_t dgap_tty_state_show(struct device *d,
> struct device_attribute *attr,
> char *buf)
> @@ -6246,7 +5970,6 @@ static ssize_t dgap_tty_name_show(struct device *d,
> }
>
> ncount += cptr->u.module.nport;
> -
> }
> }
>
> @@ -6270,1086 +5993,1238 @@ static struct attribute *dgap_sysfs_tty_entries[] = {
> NULL
> };
>
> -static struct attribute_group dgap_tty_attribute_group = {
> - .name = NULL,
> - .attrs = dgap_sysfs_tty_entries,
> -};
>
> -static void dgap_create_tty_sysfs(struct un_t *un, struct device *c)
> +/* this function creates the sys files that will export each signal status
> + * to sysfs each value will be put in a separate filename
> + */
> +static void dgap_create_ports_sysfiles(struct board_t *bd)
> {
> - int ret;
> + dev_set_drvdata(&bd->pdev->dev, bd);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_state);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
> + device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
> +}
>
> - ret = sysfs_create_group(&c->kobj, &dgap_tty_attribute_group);
> - if (ret)
> +/* removes all the sys files created for that port */
> +static void dgap_remove_ports_sysfiles(struct board_t *bd)
> +{
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
> + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
> +}
> +
> +/*
> + * Copies the BIOS code from the user to the board,
> + * and starts the BIOS running.
> + */
> +static void dgap_do_bios_load(struct board_t *brd, const u8 *ubios, int len)
> +{
> + u8 __iomem *addr;
> + uint offset;
> + unsigned int i;
> +
> + if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> return;
>
> - dev_set_drvdata(c, un);
> + addr = brd->re_map_membase;
> +
> + /*
> + * clear POST area
> + */
> + for (i = 0; i < 16; i++)
> + writeb(0, addr + POSTAREA + i);
>
> + /*
> + * Download bios
> + */
> + offset = 0x1000;
> + memcpy_toio(addr + offset, ubios, len);
> +
> + writel(0x0bf00401, addr);
> + writel(0, (addr + 4));
> +
> + /* Clear the reset, and change states. */
> + writeb(FEPCLR, brd->re_map_port);
> }
>
> -static void dgap_remove_tty_sysfs(struct device *c)
> +/*
> + * Checks to see if the BIOS completed running on the card.
> + */
> +static int dgap_test_bios(struct board_t *brd)
> {
> - sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
> + u8 __iomem *addr;
> + u16 word;
> + u16 err1;
> + u16 err2;
> +
> + if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> + return -EINVAL;
> +
> + addr = brd->re_map_membase;
> + word = readw(addr + POSTAREA);
> +
> + /*
> + * It can take 5-6 seconds for a board to
> + * pass the bios self test and post results.
> + * Give it 10 seconds.
> + */
> + brd->wait_for_bios = 0;
> + while (brd->wait_for_bios < 1000) {
> + /* Check to see if BIOS thinks board is good. (GD). */
> + if (word == *(u16 *) "GD")
> + return 0;
> + msleep_interruptible(10);
> + brd->wait_for_bios++;
> + word = readw(addr + POSTAREA);
> + }
> +
> + /* Gave up on board after too long of time taken */
> + err1 = readw(addr + SEQUENCE);
> + err2 = readw(addr + ERROR);
> + dev_warn(&brd->pdev->dev, "%s failed diagnostics. Error #(%x,%x).\n",
> + brd->name, err1, err2);
> + brd->state = BOARD_FAILED;
> + brd->dpastatus = BD_NOBIOS;
> +
> + return -EIO;
> }
>
> -static void dgap_cleanup_nodes(void)
> +/*
> + * Copies the FEP code from the user to the board,
> + * and starts the FEP running.
> + */
> +static void dgap_do_fep_load(struct board_t *brd, const u8 *ufep, int len)
> {
> - struct cnode *p;
> + u8 __iomem *addr;
> + uint offset;
>
> - p = &dgap_head;
> + if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> + return;
>
> - while (p) {
> - struct cnode *tmp = p->next;
> + addr = brd->re_map_membase;
>
> - if (p->type == NULLNODE) {
> - p = tmp;
> - continue;
> - }
> + /*
> + * Download FEP
> + */
> + offset = 0x1000;
> + memcpy_toio(addr + offset, ufep, len);
>
> - switch (p->type) {
> - case BNODE:
> - kfree(p->u.board.portstr);
> - kfree(p->u.board.addrstr);
> - kfree(p->u.board.pcibusstr);
> - kfree(p->u.board.pcislotstr);
> - kfree(p->u.board.method);
> - break;
> - case CNODE:
> - kfree(p->u.conc.id);
> - kfree(p->u.conc.connect);
> - break;
> - case MNODE:
> - kfree(p->u.module.id);
> - break;
> - case TNODE:
> - kfree(p->u.ttyname);
> - break;
> - case CUNODE:
> - kfree(p->u.cuname);
> - break;
> - case LNODE:
> - kfree(p->u.line.cable);
> - break;
> - case PNODE:
> - kfree(p->u.printname);
> - break;
> - }
> + /*
> + * If board is a concentrator product, we need to give
> + * it its config string describing how the concentrators look.
> + */
> + if ((brd->type == PCX) || (brd->type == PEPC)) {
> + u8 string[100];
> + u8 __iomem *config;
> + u8 *xconfig;
> + unsigned int i = 0;
>
> - kfree(p->u.board.status);
> - kfree(p);
> - p = tmp;
> + xconfig = dgap_create_config_string(brd, string);
> +
> + /* Write string to board memory */
> + config = addr + CONFIG;
> + for (; i < CONFIGSIZE; i++, config++, xconfig++) {
> + writeb(*xconfig, config);
> + if ((*xconfig & 0xff) == 0xff)
> + break;
> + }
> }
> +
> + writel(0xbfc01004, (addr + 0xc34));
> + writel(0x3, (addr + 0xc30));
> +
> }
> +
> /*
> - * Parse a configuration file read into memory as a string.
> + * Waits for the FEP to report thats its ready for us to use.
> */
> -static int dgap_parsefile(char **in)
> +static int dgap_test_fep(struct board_t *brd)
> {
> - struct cnode *p, *brd, *line, *conc;
> - int rc;
> - char *s;
> - int linecnt = 0;
> + u8 __iomem *addr;
> + u16 word;
> + u16 err1;
> + u16 err2;
>
> - p = &dgap_head;
> - brd = line = conc = NULL;
> + if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> + return -EINVAL;
>
> - /* perhaps we are adding to an existing list? */
> - while (p->next)
> - p = p->next;
> + addr = brd->re_map_membase;
> + word = readw(addr + FEPSTAT);
>
> - /* file must start with a BEGIN */
> - while ((rc = dgap_gettok(in)) != BEGIN) {
> - if (rc == 0) {
> - pr_err("unexpected EOF");
> - return -1;
> + /*
> + * It can take 2-3 seconds for the FEP to
> + * be up and running. Give it 5 secs.
> + */
> + brd->wait_for_fep = 0;
> + while (brd->wait_for_fep < 500) {
> + /* Check to see if FEP is up and running now. */
> + if (word == *(u16 *) "OS") {
> + /*
> + * Check to see if the board can support FEP5+ commands.
> + */
> + word = readw(addr + FEP5_PLUS);
> + if (word == *(u16 *) "5A")
> + brd->bd_flags |= BD_FEP5PLUS;
> +
> + return 0;
> }
> + msleep_interruptible(10);
> + brd->wait_for_fep++;
> + word = readw(addr + FEPSTAT);
> }
>
> - for (; ;) {
> - int board_type = 0;
> - int conc_type = 0;
> - int module_type = 0;
> + /* Gave up on board after too long of time taken */
> + err1 = readw(addr + SEQUENCE);
> + err2 = readw(addr + ERROR);
> + dev_warn(&brd->pdev->dev,
> + "FEPOS for %s not functioning. Error #(%x,%x).\n",
> + brd->name, err1, err2);
> + brd->state = BOARD_FAILED;
> + brd->dpastatus = BD_NOFEP;
>
> - rc = dgap_gettok(in);
> - if (rc == 0) {
> - pr_err("unexpected EOF");
> - return -1;
> - }
> + return -EIO;
> +}
>
> - switch (rc) {
> - case BEGIN: /* should only be 1 begin */
> - pr_err("unexpected config_begin\n");
> - return -1;
> +/*
> + * Physically forces the FEP5 card to reset itself.
> + */
> +static void dgap_do_reset_board(struct board_t *brd)
> +{
> + u8 check;
> + u32 check1;
> + u32 check2;
> + unsigned int i;
>
> - case END:
> - return 0;
> + if (!brd || (brd->magic != DGAP_BOARD_MAGIC) ||
> + !brd->re_map_membase || !brd->re_map_port)
> + return;
>
> - case BOARD: /* board info */
> - if (dgap_checknode(p))
> - return -1;
> + /* FEPRST does not vary among supported boards */
> + writeb(FEPRST, brd->re_map_port);
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + for (i = 0; i <= 1000; i++) {
> + check = readb(brd->re_map_port) & 0xe;
> + if (check == FEPRST)
> + break;
> + udelay(10);
>
> - p = p->next;
> + }
> + if (i > 1000) {
> + dev_warn(&brd->pdev->dev,
> + "dgap: Board not resetting... Failing board.\n");
> + brd->state = BOARD_FAILED;
> + brd->dpastatus = BD_NOFEP;
> + return;
> + }
>
> - p->type = BNODE;
> - p->u.board.status = kstrdup("No", GFP_KERNEL);
> - line = conc = NULL;
> - brd = p;
> - linecnt = -1;
> + /*
> + * Make sure there really is memory out there.
> + */
> + writel(0xa55a3cc3, (brd->re_map_membase + LOWMEM));
> + writel(0x5aa5c33c, (brd->re_map_membase + HIGHMEM));
> + check1 = readl(brd->re_map_membase + LOWMEM);
> + check2 = readl(brd->re_map_membase + HIGHMEM);
>
> - board_type = dgap_gettok(in);
> - if (board_type == 0) {
> - pr_err("board !!type not specified");
> - return -1;
> - }
> + if ((check1 != 0xa55a3cc3) || (check2 != 0x5aa5c33c)) {
> + dev_warn(&brd->pdev->dev,
> + "No memory at %p for board.\n",
> + brd->re_map_membase);
> + brd->state = BOARD_FAILED;
> + brd->dpastatus = BD_NOFEP;
> + return;
> + }
> +}
>
> - p->u.board.type = board_type;
> +#ifdef DIGI_CONCENTRATORS_SUPPORTED
> +/*
> + * Sends a concentrator image into the FEP5 board.
> + */
> +static void dgap_do_conc_load(struct board_t *brd, u8 *uaddr, int len)
> +{
> + char __iomem *vaddr;
> + u16 offset;
> + struct downld_t *to_dp;
>
> - break;
> + if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
> + return;
>
> - case IO: /* i/o port */
> - if (p->type != BNODE) {
> - pr_err("IO port only vaild for boards");
> - return -1;
> - }
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - p->u.board.portstr = kstrdup(s, GFP_KERNEL);
> - if (kstrtol(s, 0, &p->u.board.port)) {
> - pr_err("bad number for IO port");
> - return -1;
> - }
> - p->u.board.v_port = 1;
> - break;
> + vaddr = brd->re_map_membase;
>
> - case MEM: /* memory address */
> - if (p->type != BNODE) {
> - pr_err("memory address only vaild for boards");
> - return -1;
> - }
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - p->u.board.addrstr = kstrdup(s, GFP_KERNEL);
> - if (kstrtoul(s, 0, &p->u.board.addr)) {
> - pr_err("bad number for memory address");
> - return -1;
> - }
> - p->u.board.v_addr = 1;
> - break;
> + offset = readw((u16 *) (vaddr + DOWNREQ));
> + to_dp = (struct downld_t *) (vaddr + (int) offset);
> + memcpy_toio(to_dp, uaddr, len);
>
> - case PCIINFO: /* pci information */
> - if (p->type != BNODE) {
> - pr_err("memory address only vaild for boards");
> - return -1;
> - }
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - p->u.board.pcibusstr = kstrdup(s, GFP_KERNEL);
> - if (kstrtoul(s, 0, &p->u.board.pcibus)) {
> - pr_err("bad number for pci bus");
> - return -1;
> - }
> - p->u.board.v_pcibus = 1;
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - p->u.board.pcislotstr = kstrdup(s, GFP_KERNEL);
> - if (kstrtoul(s, 0, &p->u.board.pcislot)) {
> - pr_err("bad number for pci slot");
> - return -1;
> - }
> - p->u.board.v_pcislot = 1;
> - break;
> + /* Tell card we have data for it */
> + writew(0, vaddr + (DOWNREQ));
>
> - case METHOD:
> - if (p->type != BNODE) {
> - pr_err("install method only vaild for boards");
> - return -1;
> - }
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - p->u.board.method = kstrdup(s, GFP_KERNEL);
> - p->u.board.v_method = 1;
> - break;
> + brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS;
> +}
> +#endif
>
> - case STATUS:
> - if (p->type != BNODE) {
> - pr_err("config status only vaild for boards");
> - return -1;
> - }
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - p->u.board.status = kstrdup(s, GFP_KERNEL);
> - break;
> +#define EXPANSION_ROM_SIZE (64 * 1024)
> +#define FEP5_ROM_MAGIC (0xFEFFFFFF)
>
> - case NPORTS: /* number of ports */
> - if (p->type == BNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.board.nport)) {
> - pr_err("bad number for number of ports");
> - return -1;
> - }
> - p->u.board.v_nport = 1;
> - } else if (p->type == CNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.conc.nport)) {
> - pr_err("bad number for number of ports");
> - return -1;
> - }
> - p->u.conc.v_nport = 1;
> - } else if (p->type == MNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.module.nport)) {
> - pr_err("bad number for number of ports");
> - return -1;
> - }
> - p->u.module.v_nport = 1;
> - } else {
> - pr_err("nports only valid for concentrators or modules");
> - return -1;
> - }
> - break;
> +static void dgap_get_vpd(struct board_t *brd)
> +{
> + u32 magic;
> + u32 base_offset;
> + u16 rom_offset;
> + u16 vpd_offset;
> + u16 image_length;
> + u16 i;
> + u8 byte1;
> + u8 byte2;
>
> - case ID: /* letter ID used in tty name */
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> + /*
> + * Poke the magic number at the PCI Rom Address location.
> + * If VPD is supported, the value read from that address
> + * will be non-zero.
> + */
> + magic = FEP5_ROM_MAGIC;
> + pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
> + pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
>
> - p->u.board.status = kstrdup(s, GFP_KERNEL);
> + /* VPD not supported, bail */
> + if (!magic)
> + return;
>
> - if (p->type == CNODE) {
> - p->u.conc.id = kstrdup(s, GFP_KERNEL);
> - p->u.conc.v_id = 1;
> - } else if (p->type == MNODE) {
> - p->u.module.id = kstrdup(s, GFP_KERNEL);
> - p->u.module.v_id = 1;
> - } else {
> - pr_err("id only valid for concentrators or modules");
> - return -1;
> - }
> - break;
> + /*
> + * To get to the OTPROM memory, we have to send the boards base
> + * address or'ed with 1 into the PCI Rom Address location.
> + */
> + magic = brd->membase | 0x01;
> + pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
> + pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
>
> - case STARTO: /* start offset of ID */
> - if (p->type == BNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.board.start)) {
> - pr_err("bad number for start of tty count");
> - return -1;
> - }
> - p->u.board.v_start = 1;
> - } else if (p->type == CNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.conc.start)) {
> - pr_err("bad number for start of tty count");
> - return -1;
> - }
> - p->u.conc.v_start = 1;
> - } else if (p->type == MNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.module.start)) {
> - pr_err("bad number for start of tty count");
> - return -1;
> - }
> - p->u.module.v_start = 1;
> - } else {
> - pr_err("start only valid for concentrators or modules");
> - return -1;
> - }
> - break;
> + byte1 = readb(brd->re_map_membase);
> + byte2 = readb(brd->re_map_membase + 1);
>
> - case TTYN: /* tty name prefix */
> - if (dgap_checknode(p))
> - return -1;
> + /*
> + * If the board correctly swapped to the OTPROM memory,
> + * the first 2 bytes (header) should be 0x55, 0xAA
> + */
> + if (byte1 == 0x55 && byte2 == 0xAA) {
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + base_offset = 0;
>
> - p = p->next;
> - p->type = TNODE;
> + /*
> + * We have to run through all the OTPROM memory looking
> + * for the VPD offset.
> + */
> + while (base_offset <= EXPANSION_ROM_SIZE) {
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpeced end of file");
> - return -1;
> - }
> - p->u.ttyname = kstrdup(s, GFP_KERNEL);
> - if (!p->u.ttyname)
> - return -1;
> + /*
> + * Lots of magic numbers here.
> + *
> + * The VPD offset is located inside the ROM Data
> + * Structure.
> + *
> + * We also have to remember the length of each
> + * ROM Data Structure, so we can "hop" to the next
> + * entry if the VPD isn't in the current
> + * ROM Data Structure.
> + */
> + rom_offset = readw(brd->re_map_membase +
> + base_offset + 0x18);
> + image_length = readw(brd->re_map_membase +
> + rom_offset + 0x10) * 512;
> + vpd_offset = readw(brd->re_map_membase +
> + rom_offset + 0x08);
>
> - break;
> + /* Found the VPD entry */
> + if (vpd_offset)
> + break;
>
> - case CU: /* cu name prefix */
> - if (dgap_checknode(p))
> - return -1;
> + /* We didn't find a VPD entry, go to next ROM entry. */
> + base_offset += image_length;
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + byte1 = readb(brd->re_map_membase + base_offset);
> + byte2 = readb(brd->re_map_membase + base_offset + 1);
>
> - p = p->next;
> - p->type = CUNODE;
> + /*
> + * If the new ROM offset doesn't have 0x55, 0xAA
> + * as its header, we have run out of ROM.
> + */
> + if (byte1 != 0x55 || byte2 != 0xAA)
> + break;
> + }
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpeced end of file");
> - return -1;
> + /*
> + * If we have a VPD offset, then mark the board
> + * as having a valid VPD, and copy VPDSIZE (512) bytes of
> + * that VPD to the buffer we have in our board structure.
> + */
> + if (vpd_offset) {
> + brd->bd_flags |= BD_HAS_VPD;
> + for (i = 0; i < VPDSIZE; i++) {
> + brd->vpd[i] = readb(brd->re_map_membase +
> + vpd_offset + i);
> }
> - p->u.cuname = kstrdup(s, GFP_KERNEL);
> - if (!p->u.cuname)
> - return -1;
> + }
> + }
>
> - break;
> + /*
> + * We MUST poke the magic number at the PCI Rom Address location again.
> + * This makes the card report the regular board memory back to us,
> + * rather than the OTPROM memory.
> + */
> + magic = FEP5_ROM_MAGIC;
> + pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
> +}
>
> - case LINE: /* line information */
> - if (dgap_checknode(p))
> - return -1;
> - if (!brd) {
> - pr_err("must specify board before line info");
> - return -1;
> - }
> - switch (brd->u.board.type) {
> - case PPCM:
> - pr_err("line not vaild for PC/em");
> - return -1;
> - }
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> +static ssize_t dgap_driver_version_show(struct device_driver *ddp, char *buf)
> +{
> + return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
> +}
> +static DRIVER_ATTR(version, S_IRUSR, dgap_driver_version_show, NULL);
>
> - p = p->next;
> - p->type = LNODE;
> - conc = NULL;
> - line = p;
> - linecnt++;
> - break;
>
> - case CONC: /* concentrator information */
> - if (dgap_checknode(p))
> - return -1;
> - if (!line) {
> - pr_err("must specify line info before concentrator");
> - return -1;
> - }
> +static ssize_t dgap_driver_boards_show(struct device_driver *ddp, char *buf)
> +{
> + return snprintf(buf, PAGE_SIZE, "%d\n", dgap_numboards);
> +}
> +static DRIVER_ATTR(boards, S_IRUSR, dgap_driver_boards_show, NULL);
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
>
> - p = p->next;
> - p->type = CNODE;
> - conc = p;
> +static ssize_t dgap_driver_maxboards_show(struct device_driver *ddp, char *buf)
> +{
> + return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
> +}
> +static DRIVER_ATTR(maxboards, S_IRUSR, dgap_driver_maxboards_show, NULL);
>
> - if (linecnt)
> - brd->u.board.conc2++;
> - else
> - brd->u.board.conc1++;
>
> - conc_type = dgap_gettok(in);
> - if (conc_type == 0 || conc_type != CX ||
> - conc_type != EPC) {
> - pr_err("failed to set a type of concentratros");
> - return -1;
> - }
> +static ssize_t dgap_driver_pollcounter_show(struct device_driver *ddp,
> + char *buf)
> +{
> + return snprintf(buf, PAGE_SIZE, "%ld\n", dgap_poll_counter);
> +}
> +static DRIVER_ATTR(pollcounter, S_IRUSR, dgap_driver_pollcounter_show, NULL);
>
> - p->u.conc.type = conc_type;
> +static ssize_t dgap_driver_pollrate_show(struct device_driver *ddp, char *buf)
> +{
> + return snprintf(buf, PAGE_SIZE, "%dms\n", dgap_poll_tick);
> +}
>
> - break;
> +static ssize_t dgap_driver_pollrate_store(struct device_driver *ddp,
> + const char *buf, size_t count)
> +{
> + if (sscanf(buf, "%d\n", &dgap_poll_tick) != 1)
> + return -EINVAL;
> + return count;
> +}
> +static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgap_driver_pollrate_show,
> + dgap_driver_pollrate_store);
>
> - case MOD: /* EBI module */
> - if (dgap_checknode(p))
> - return -1;
> - if (!brd) {
> - pr_err("must specify board info before EBI modules");
> - return -1;
> - }
> - switch (brd->u.board.type) {
> - case PPCM:
> - linecnt = 0;
> - break;
> - default:
> - if (!conc) {
> - pr_err("must specify concentrator info before EBI module");
> - return -1;
> - }
> - }
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> +static int dgap_create_driver_sysfiles(struct pci_driver *dgap_driver)
> +{
> + int rc = 0;
> + struct device_driver *driverfs = &dgap_driver->driver;
>
> - p = p->next;
> - p->type = MNODE;
> + rc |= driver_create_file(driverfs, &driver_attr_version);
> + rc |= driver_create_file(driverfs, &driver_attr_boards);
> + rc |= driver_create_file(driverfs, &driver_attr_maxboards);
> + rc |= driver_create_file(driverfs, &driver_attr_pollrate);
> + rc |= driver_create_file(driverfs, &driver_attr_pollcounter);
>
> - if (linecnt)
> - brd->u.board.module2++;
> - else
> - brd->u.board.module1++;
> + return rc;
> +}
>
> - module_type = dgap_gettok(in);
> - if (module_type == 0 || module_type != PORTS ||
> - module_type != MODEM) {
> - pr_err("failed to set a type of module");
> - return -1;
> - }
> +static void dgap_remove_driver_sysfiles(struct pci_driver *dgap_driver)
> +{
> + struct device_driver *driverfs = &dgap_driver->driver;
>
> - p->u.module.type = module_type;
> + driver_remove_file(driverfs, &driver_attr_version);
> + driver_remove_file(driverfs, &driver_attr_boards);
> + driver_remove_file(driverfs, &driver_attr_maxboards);
> + driver_remove_file(driverfs, &driver_attr_pollrate);
> + driver_remove_file(driverfs, &driver_attr_pollcounter);
> +}
>
> - break;
> +static struct attribute_group dgap_tty_attribute_group = {
> + .name = NULL,
> + .attrs = dgap_sysfs_tty_entries,
> +};
>
> - case CABLE:
> - if (p->type == LNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - p->u.line.cable = kstrdup(s, GFP_KERNEL);
> - p->u.line.v_cable = 1;
> - }
> - break;
> +static void dgap_create_tty_sysfs(struct un_t *un, struct device *c)
> +{
> + int ret;
>
> - case SPEED: /* sync line speed indication */
> - if (p->type == LNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.line.speed)) {
> - pr_err("bad number for line speed");
> - return -1;
> - }
> - p->u.line.v_speed = 1;
> - } else if (p->type == CNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.conc.speed)) {
> - pr_err("bad number for line speed");
> - return -1;
> - }
> - p->u.conc.v_speed = 1;
> - } else {
> - pr_err("speed valid only for lines or concentrators.");
> - return -1;
> - }
> - break;
> + ret = sysfs_create_group(&c->kobj, &dgap_tty_attribute_group);
> + if (ret)
> + return;
>
> - case CONNECT:
> - if (p->type == CNODE) {
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - p->u.conc.connect = kstrdup(s, GFP_KERNEL);
> - p->u.conc.v_connect = 1;
> - }
> - break;
> - case PRINT: /* transparent print name prefix */
> - if (dgap_checknode(p))
> - return -1;
> + dev_set_drvdata(c, un);
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> +}
>
> - p = p->next;
> - p->type = PNODE;
> +static void dgap_remove_tty_sysfs(struct device *c)
> +{
> + sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
> +}
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpeced end of file");
> - return -1;
> - }
> - p->u.printname = kstrdup(s, GFP_KERNEL);
> - if (!p->u.printname)
> - return -1;
> +/*
> + * Create pr and tty device entries
> + */
> +static int dgap_tty_register_ports(struct board_t *brd)
> +{
> + struct channel_t *ch;
> + int i;
> + int ret;
>
> - break;
> + brd->serial_ports = kcalloc(brd->nasync, sizeof(*brd->serial_ports),
> + GFP_KERNEL);
> + if (!brd->serial_ports)
> + return -ENOMEM;
>
> - case CMAJOR: /* major number */
> - if (dgap_checknode(p))
> - return -1;
> + brd->printer_ports = kcalloc(brd->nasync, sizeof(*brd->printer_ports),
> + GFP_KERNEL);
> + if (!brd->printer_ports) {
> + ret = -ENOMEM;
> + goto free_serial_ports;
> + }
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + for (i = 0; i < brd->nasync; i++) {
> + tty_port_init(&brd->serial_ports[i]);
> + tty_port_init(&brd->printer_ports[i]);
> + }
>
> - p = p->next;
> - p->type = JNODE;
> + ch = brd->channels[0];
> + for (i = 0; i < brd->nasync; i++, ch = brd->channels[i]) {
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.majornumber)) {
> - pr_err("bad number for major number");
> - return -1;
> - }
> - break;
> + struct device *classp;
>
> - case ALTPIN: /* altpin setting */
> - if (dgap_checknode(p))
> - return -1;
> + classp = tty_port_register_device(&brd->serial_ports[i],
> + brd->serial_driver,
> + i, NULL);
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + if (IS_ERR(classp)) {
> + ret = PTR_ERR(classp);
> + goto unregister_ttys;
> + }
>
> - p = p->next;
> - p->type = ANODE;
> + dgap_create_tty_sysfs(&ch->ch_tun, classp);
> + ch->ch_tun.un_sysfs = classp;
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.altpin)) {
> - pr_err("bad number for altpin");
> - return -1;
> - }
> - break;
> + classp = tty_port_register_device(&brd->printer_ports[i],
> + brd->print_driver,
> + i, NULL);
>
> - case USEINTR: /* enable interrupt setting */
> - if (dgap_checknode(p))
> - return -1;
> + if (IS_ERR(classp)) {
> + ret = PTR_ERR(classp);
> + goto unregister_ttys;
> + }
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + dgap_create_tty_sysfs(&ch->ch_pun, classp);
> + ch->ch_pun.un_sysfs = classp;
> + }
> + dgap_create_ports_sysfiles(brd);
>
> - p = p->next;
> - p->type = INTRNODE;
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.useintr)) {
> - pr_err("bad number for useintr");
> - return -1;
> - }
> - break;
> + return 0;
>
> - case TTSIZ: /* size of tty structure */
> - if (dgap_checknode(p))
> - return -1;
> +unregister_ttys:
> + while (i >= 0) {
> + ch = brd->channels[i];
> + if (ch->ch_tun.un_sysfs) {
> + dgap_remove_tty_sysfs(ch->ch_tun.un_sysfs);
> + tty_unregister_device(brd->serial_driver, i);
> + }
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + if (ch->ch_pun.un_sysfs) {
> + dgap_remove_tty_sysfs(ch->ch_pun.un_sysfs);
> + tty_unregister_device(brd->print_driver, i);
> + }
> + i--;
> + }
>
> - p = p->next;
> - p->type = TSNODE;
> + for (i = 0; i < brd->nasync; i++) {
> + tty_port_destroy(&brd->serial_ports[i]);
> + tty_port_destroy(&brd->printer_ports[i]);
> + }
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.ttysize)) {
> - pr_err("bad number for ttysize");
> - return -1;
> - }
> - break;
> + kfree(brd->printer_ports);
> + brd->printer_ports = NULL;
>
> - case CHSIZ: /* channel structure size */
> - if (dgap_checknode(p))
> - return -1;
> +free_serial_ports:
> + kfree(brd->serial_ports);
> + brd->serial_ports = NULL;
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + return ret;
> +}
>
> - p = p->next;
> - p->type = CSNODE;
> +/*
> + * dgap_cleanup_tty()
> + *
> + * Uninitialize the TTY portion of this driver. Free all memory and
> + * resources.
> + */
> +static void dgap_cleanup_tty(struct board_t *brd)
> +{
> + struct device *dev;
> + unsigned int i;
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.chsize)) {
> - pr_err("bad number for chsize");
> - return -1;
> - }
> - break;
> + dgap_boards_by_major[brd->serial_driver->major] = NULL;
> + brd->dgap_serial_major = 0;
> + for (i = 0; i < brd->nasync; i++) {
> + tty_port_destroy(&brd->serial_ports[i]);
> + dev = brd->channels[i]->ch_tun.un_sysfs;
> + dgap_remove_tty_sysfs(dev);
> + tty_unregister_device(brd->serial_driver, i);
> + }
> + tty_unregister_driver(brd->serial_driver);
> + put_tty_driver(brd->serial_driver);
> + kfree(brd->serial_ports);
>
> - case BSSIZ: /* board structure size */
> - if (dgap_checknode(p))
> - return -1;
> + dgap_boards_by_major[brd->print_driver->major] = NULL;
> + brd->dgap_transparent_print_major = 0;
> + for (i = 0; i < brd->nasync; i++) {
> + tty_port_destroy(&brd->printer_ports[i]);
> + dev = brd->channels[i]->ch_pun.un_sysfs;
> + dgap_remove_tty_sysfs(dev);
> + tty_unregister_device(brd->print_driver, i);
> + }
> + tty_unregister_driver(brd->print_driver);
> + put_tty_driver(brd->print_driver);
> + kfree(brd->printer_ports);
> +}
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> +static int dgap_request_irq(struct board_t *brd)
> +{
> + int rc;
>
> - p = p->next;
> - p->type = BSNODE;
> + if (!brd || brd->magic != DGAP_BOARD_MAGIC)
> + return -ENODEV;
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.bssize)) {
> - pr_err("bad number for bssize");
> - return -1;
> - }
> - break;
> + /*
> + * Set up our interrupt handler if we are set to do interrupts.
> + */
> + if (dgap_config_get_useintr(brd) && brd->irq) {
>
> - case UNTSIZ: /* sched structure size */
> - if (dgap_checknode(p))
> - return -1;
> + rc = request_irq(brd->irq, dgap_intr, IRQF_SHARED, "DGAP", brd);
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + if (!rc)
> + brd->intr_used = 1;
> + }
> + return 0;
> +}
>
> - p = p->next;
> - p->type = USNODE;
> +static void dgap_free_irq(struct board_t *brd)
> +{
> + if (brd->intr_used && brd->irq)
> + free_irq(brd->irq, brd);
> +}
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.unsize)) {
> - pr_err("bad number for schedsize");
> - return -1;
> - }
> - break;
> +static int dgap_firmware_load(struct pci_dev *pdev, int card_type,
> + struct board_t *brd)
> +{
> + const struct firmware *fw;
> + char *tmp_ptr;
> + int ret;
> + char *dgap_config_buf;
>
> - case F2SIZ: /* f2200 structure size */
> - if (dgap_checknode(p))
> - return -1;
> + dgap_get_vpd(brd);
> + dgap_do_reset_board(brd);
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + if (fw_info[card_type].conf_name) {
> + ret = request_firmware(&fw, fw_info[card_type].conf_name,
> + &pdev->dev);
> + if (ret) {
> + dev_err(&pdev->dev, "config file %s not found\n",
> + fw_info[card_type].conf_name);
> + return ret;
> + }
>
> - p = p->next;
> - p->type = FSNODE;
> + dgap_config_buf = kzalloc(fw->size + 1, GFP_KERNEL);
> + if (!dgap_config_buf) {
> + release_firmware(fw);
> + return -ENOMEM;
> + }
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.f2size)) {
> - pr_err("bad number for f2200size");
> - return -1;
> - }
> - break;
> + memcpy(dgap_config_buf, fw->data, fw->size);
> + release_firmware(fw);
>
> - case VPSIZ: /* vpix structure size */
> - if (dgap_checknode(p))
> - return -1;
> + /*
> + * preserve dgap_config_buf
> + * as dgap_parsefile would
> + * otherwise alter it.
> + */
> + tmp_ptr = dgap_config_buf;
>
> - p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
> - if (!p->next)
> - return -1;
> + if (dgap_parsefile(&tmp_ptr) != 0) {
> + kfree(dgap_config_buf);
> + return -EINVAL;
> + }
> + kfree(dgap_config_buf);
> + }
>
> - p = p->next;
> - p->type = VSNODE;
> + /*
> + * Match this board to a config the user created for us.
> + */
> + brd->bd_config =
> + dgap_find_config(brd->type, brd->pci_bus, brd->pci_slot);
>
> - s = dgap_getword(in);
> - if (!s) {
> - pr_err("unexpected end of file");
> - return -1;
> - }
> - if (kstrtol(s, 0, &p->u.vpixsize)) {
> - pr_err("bad number for vpixsize");
> - return -1;
> - }
> - break;
> - }
> + /*
> + * Because the 4 port Xr products share the same PCI ID
> + * as the 8 port Xr products, if we receive a NULL config
> + * back, and this is a PAPORT8 board, retry with a
> + * PAPORT4 attempt as well.
> + */
> + if (brd->type == PAPORT8 && !brd->bd_config)
> + brd->bd_config =
> + dgap_find_config(PAPORT4, brd->pci_bus, brd->pci_slot);
> +
> + if (!brd->bd_config) {
> + dev_err(&pdev->dev, "No valid configuration found\n");
> + return -EINVAL;
> }
> -}
>
> -/*
> - * dgap_sindex: much like index(), but it looks for a match of any character in
> - * the group, and returns that position. If the first character is a ^, then
> - * this will match the first occurrence not in that group.
> - */
> -static char *dgap_sindex(char *string, char *group)
> -{
> - char *ptr;
> + if (fw_info[card_type].bios_name) {
> + ret = request_firmware(&fw, fw_info[card_type].bios_name,
> + &pdev->dev);
> + if (ret) {
> + dev_err(&pdev->dev, "bios file %s not found\n",
> + fw_info[card_type].bios_name);
> + return ret;
> + }
> + dgap_do_bios_load(brd, fw->data, fw->size);
> + release_firmware(fw);
>
> - if (!string || !group)
> - return (char *) NULL;
> + /* Wait for BIOS to test board... */
> + ret = dgap_test_bios(brd);
> + if (ret)
> + return ret;
> + }
>
> - if (*group == '^') {
> - group++;
> - for (; *string; string++) {
> - for (ptr = group; *ptr; ptr++) {
> - if (*ptr == *string)
> - break;
> - }
> - if (*ptr == '\0')
> - return string;
> + if (fw_info[card_type].fep_name) {
> + ret = request_firmware(&fw, fw_info[card_type].fep_name,
> + &pdev->dev);
> + if (ret) {
> + dev_err(&pdev->dev, "dgap: fep file %s not found\n",
> + fw_info[card_type].fep_name);
> + return ret;
> }
> - } else {
> - for (; *string; string++) {
> - for (ptr = group; *ptr; ptr++) {
> - if (*ptr == *string)
> - return string;
> - }
> + dgap_do_fep_load(brd, fw->data, fw->size);
> + release_firmware(fw);
> +
> + /* Wait for FEP to load on board... */
> + ret = dgap_test_fep(brd);
> + if (ret)
> + return ret;
> + }
> +
> +#ifdef DIGI_CONCENTRATORS_SUPPORTED
> + /*
> + * If this is a CX or EPCX, we need to see if the firmware
> + * is requesting a concentrator image from us.
> + */
> + if ((bd->type == PCX) || (bd->type == PEPC)) {
> + chk_addr = (u16 *) (vaddr + DOWNREQ);
> + /* Nonzero if FEP is requesting concentrator image. */
> + check = readw(chk_addr);
> + vaddr = brd->re_map_membase;
> + }
> +
> + if (fw_info[card_type].con_name && check && vaddr) {
> + ret = request_firmware(&fw, fw_info[card_type].con_name,
> + &pdev->dev);
> + if (ret) {
> + dev_err(&pdev->dev, "conc file %s not found\n",
> + fw_info[card_type].con_name);
> + return ret;
> }
> + /* Put concentrator firmware loading code here */
> + offset = readw((u16 *) (vaddr + DOWNREQ));
> + memcpy_toio(offset, fw->data, fw->size);
> +
> + dgap_do_conc_load(brd, (char *)fw->data, fw->size)
> + release_firmware(fw);
> }
> +#endif
>
> - return (char *) NULL;
> + return 0;
> }
>
> /*
> - * Get a token from the input file; return 0 if end of file is reached
> + * dgap_tty_init()
> + *
> + * Init the tty subsystem. Called once per board after board has been
> + * downloaded and init'ed.
> */
> -static int dgap_gettok(char **in)
> +static int dgap_tty_init(struct board_t *brd)
> {
> - char *w;
> - struct toklist *t;
> + int i;
> + int tlw;
> + uint true_count;
> + u8 __iomem *vaddr;
> + u8 modem;
> + struct channel_t *ch;
> + struct bs_t __iomem *bs;
> + struct cm_t __iomem *cm;
> + int ret;
>
> - if (strstr(dgap_cword, "board")) {
> - w = dgap_getword(in);
> - snprintf(dgap_cword, MAXCWORD, "%s", w);
> - for (t = dgap_brdtype; t->token != 0; t++) {
> - if (!strcmp(w, t->string))
> - return t->token;
> + /*
> + * Initialize board structure elements.
> + */
> +
> + vaddr = brd->re_map_membase;
> + true_count = readw((vaddr + NCHAN));
> +
> + brd->nasync = dgap_config_get_num_prts(brd);
> +
> + if (!brd->nasync)
> + brd->nasync = brd->maxports;
> +
> + if (brd->nasync > brd->maxports)
> + brd->nasync = brd->maxports;
> +
> + if (true_count != brd->nasync) {
> + dev_warn(&brd->pdev->dev,
> + "%s configured for %d ports, has %d ports.\n",
> + brd->name, brd->nasync, true_count);
> +
> + if ((brd->type == PPCM) &&
> + (true_count == 64 || true_count == 0)) {
> + dev_warn(&brd->pdev->dev,
> + "Please make SURE the EBI cable running from the card\n");
> + dev_warn(&brd->pdev->dev,
> + "to each EM module is plugged into EBI IN!\n");
> }
> - } else {
> - while ((w = dgap_getword(in))) {
> - snprintf(dgap_cword, MAXCWORD, "%s", w);
> - for (t = dgap_tlist; t->token != 0; t++) {
> - if (!strcmp(w, t->string))
> - return t->token;
> - }
> +
> + brd->nasync = true_count;
> +
> + /* If no ports, don't bother going any further */
> + if (!brd->nasync) {
> + brd->state = BOARD_FAILED;
> + brd->dpastatus = BD_NOFEP;
> + return -EIO;
> }
> }
>
> + /*
> + * Allocate channel memory that might not have been allocated
> + * when the driver was first loaded.
> + */
> + for (i = 0; i < brd->nasync; i++) {
> + brd->channels[i] =
> + kzalloc(sizeof(struct channel_t), GFP_KERNEL);
> + if (!brd->channels[i]) {
> + ret = -ENOMEM;
> + goto free_chan;
> + }
> + }
> +
> + ch = brd->channels[0];
> + vaddr = brd->re_map_membase;
> +
> + bs = (struct bs_t __iomem *) ((ulong) vaddr + CHANBUF);
> + cm = (struct cm_t __iomem *) ((ulong) vaddr + CMDBUF);
> +
> + brd->bd_bs = bs;
> +
> + /* Set up channel variables */
> + for (i = 0; i < brd->nasync; i++, ch = brd->channels[i], bs++) {
> +
> + spin_lock_init(&ch->ch_lock);
> +
> + /* Store all our magic numbers */
> + ch->magic = DGAP_CHANNEL_MAGIC;
> + ch->ch_tun.magic = DGAP_UNIT_MAGIC;
> + ch->ch_tun.un_type = DGAP_SERIAL;
> + ch->ch_tun.un_ch = ch;
> + ch->ch_tun.un_dev = i;
> +
> + ch->ch_pun.magic = DGAP_UNIT_MAGIC;
> + ch->ch_pun.un_type = DGAP_PRINT;
> + ch->ch_pun.un_ch = ch;
> + ch->ch_pun.un_dev = i;
> +
> + ch->ch_vaddr = vaddr;
> + ch->ch_bs = bs;
> + ch->ch_cm = cm;
> + ch->ch_bd = brd;
> + ch->ch_portnum = i;
> + ch->ch_digi = dgap_digi_init;
> +
> + /*
> + * Set up digi dsr and dcd bits based on altpin flag.
> + */
> + if (dgap_config_get_altpin(brd)) {
> + ch->ch_dsr = DM_CD;
> + ch->ch_cd = DM_DSR;
> + ch->ch_digi.digi_flags |= DIGI_ALTPIN;
> + } else {
> + ch->ch_cd = DM_CD;
> + ch->ch_dsr = DM_DSR;
> + }
> +
> + ch->ch_taddr = vaddr + (ioread16(&(ch->ch_bs->tx_seg)) << 4);
> + ch->ch_raddr = vaddr + (ioread16(&(ch->ch_bs->rx_seg)) << 4);
> + ch->ch_tx_win = 0;
> + ch->ch_rx_win = 0;
> + ch->ch_tsize = readw(&(ch->ch_bs->tx_max)) + 1;
> + ch->ch_rsize = readw(&(ch->ch_bs->rx_max)) + 1;
> + ch->ch_tstart = 0;
> + ch->ch_rstart = 0;
> +
> + /*
> + * Set queue water marks, interrupt mask,
> + * and general tty parameters.
> + */
> + tlw = ch->ch_tsize >= 2000 ? ((ch->ch_tsize * 5) / 8) :
> + ch->ch_tsize / 2;
> + ch->ch_tlw = tlw;
> +
> + dgap_cmdw(ch, STLOW, tlw, 0);
> +
> + dgap_cmdw(ch, SRLOW, ch->ch_rsize / 2, 0);
> +
> + dgap_cmdw(ch, SRHIGH, 7 * ch->ch_rsize / 8, 0);
> +
> + ch->ch_mistat = readb(&(ch->ch_bs->m_stat));
> +
> + init_waitqueue_head(&ch->ch_flags_wait);
> + init_waitqueue_head(&ch->ch_tun.un_flags_wait);
> + init_waitqueue_head(&ch->ch_pun.un_flags_wait);
> +
> + /* Turn on all modem interrupts for now */
> + modem = (DM_CD | DM_DSR | DM_CTS | DM_RI);
> + writeb(modem, &(ch->ch_bs->m_int));
> +
> + /*
> + * Set edelay to 0 if interrupts are turned on,
> + * otherwise set edelay to the usual 100.
> + */
> + if (brd->intr_used)
> + writew(0, &(ch->ch_bs->edelay));
> + else
> + writew(100, &(ch->ch_bs->edelay));
> +
> + writeb(1, &(ch->ch_bs->idata));
> + }
> +
> return 0;
> +
> +free_chan:
> + while (--i >= 0) {
> + kfree(brd->channels[i]);
> + brd->channels[i] = NULL;
> + }
> + return ret;
> }
>
> /*
> - * get a word from the input stream, also keep track of current line number.
> - * words are separated by whitespace.
> + * dgap_tty_free()
> + *
> + * Free the channles which are allocated in dgap_tty_init().
> */
> -static char *dgap_getword(char **in)
> +static void dgap_tty_free(struct board_t *brd)
> {
> - char *ret_ptr = *in;
> + int i;
>
> - char *ptr = dgap_sindex(*in, " \t\n");
> + for (i = 0; i < brd->nasync; i++)
> + kfree(brd->channels[i]);
> +}
>
> - /* If no word found, return null */
> - if (!ptr)
> - return NULL;
> +static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
> +{
> + int rc;
> + struct board_t *brd;
>
> - /* Mark new location for our buffer */
> - *ptr = '\0';
> - *in = ptr + 1;
> + if (dgap_numboards >= MAXBOARDS)
> + return -EPERM;
>
> - /* Eat any extra spaces/tabs/newlines that might be present */
> - while (*in && **in && ((**in == ' ') ||
> - (**in == '\t') ||
> - (**in == '\n'))) {
> - **in = '\0';
> - *in = *in + 1;
> - }
> + rc = pci_enable_device(pdev);
> + if (rc)
> + return -EIO;
>
> - return ret_ptr;
> + brd = dgap_found_board(pdev, ent->driver_data, dgap_numboards);
> + if (IS_ERR(brd))
> + return PTR_ERR(brd);
> +
> + rc = dgap_firmware_load(pdev, ent->driver_data, brd);
> + if (rc)
> + goto cleanup_brd;
> +
> + rc = dgap_alloc_flipbuf(brd);
> + if (rc)
> + goto cleanup_brd;
> +
> + rc = dgap_tty_register(brd);
> + if (rc)
> + goto free_flipbuf;
> +
> + rc = dgap_request_irq(brd);
> + if (rc)
> + goto unregister_tty;
> +
> + /*
> + * Do tty device initialization.
> + */
> + rc = dgap_tty_init(brd);
> + if (rc < 0)
> + goto free_irq;
> +
> + rc = dgap_tty_register_ports(brd);
> + if (rc)
> + goto tty_free;
> +
> + brd->state = BOARD_READY;
> + brd->dpastatus = BD_RUNNING;
> +
> + dgap_board[dgap_numboards++] = brd;
> +
> + return 0;
> +
> +tty_free:
> + dgap_tty_free(brd);
> +free_irq:
> + dgap_free_irq(brd);
> +unregister_tty:
> + dgap_tty_unregister(brd);
> +free_flipbuf:
> + dgap_free_flipbuf(brd);
> +cleanup_brd:
> + dgap_cleanup_nodes();
> + dgap_unmap(brd);
> + kfree(brd);
> +
> + return rc;
> +}
> +
> +static void dgap_remove_one(struct pci_dev *dev)
> +{
> + /* Do Nothing */
> }
>
> +static struct pci_driver dgap_driver = {
> + .name = "dgap",
> + .probe = dgap_init_one,
> + .id_table = dgap_pci_tbl,
> + .remove = dgap_remove_one,
> +};
> +
> /*
> - * dgap_checknode: see if all the necessary info has been supplied for a node
> - * before creating the next node.
> + * dgap_init_globals()
> + *
> + * This is where we initialize the globals from the static insmod
> + * configuration variables. These are declared near the head of
> + * this file.
> */
> -static int dgap_checknode(struct cnode *p)
> +static void dgap_init_globals(void)
> {
> - switch (p->type) {
> - case LNODE:
> - if (p->u.line.v_speed == 0) {
> - pr_err("line speed not specified");
> - return 1;
> - }
> - return 0;
> + unsigned int i;
>
> - case CNODE:
> - if (p->u.conc.v_speed == 0) {
> - pr_err("concentrator line speed not specified");
> - return 1;
> - }
> - if (p->u.conc.v_nport == 0) {
> - pr_err("number of ports on concentrator not specified");
> - return 1;
> - }
> - if (p->u.conc.v_id == 0) {
> - pr_err("concentrator id letter not specified");
> - return 1;
> - }
> - return 0;
> + for (i = 0; i < MAXBOARDS; i++)
> + dgap_board[i] = NULL;
>
> - case MNODE:
> - if (p->u.module.v_nport == 0) {
> - pr_err("number of ports on EBI module not specified");
> - return 1;
> - }
> - if (p->u.module.v_id == 0) {
> - pr_err("EBI module id letter not specified");
> - return 1;
> - }
> - return 0;
> - }
> - return 0;
> + init_timer(&dgap_poll_timer);
> }
>
> /*
> - * Given a board pointer, returns whether we should use interrupts or not.
> + * Start of driver.
> */
> -static uint dgap_config_get_useintr(struct board_t *bd)
> +static int dgap_start(void)
> {
> - struct cnode *p;
> + int rc;
> + unsigned long flags;
> + struct device *device;
>
> - if (!bd)
> - return 0;
> + /*
> + * make sure that the globals are
> + * init'd before we do anything else
> + */
> + dgap_init_globals();
>
> - for (p = bd->bd_config; p; p = p->next) {
> - if (p->type == INTRNODE) {
> - /*
> - * check for pcxr types.
> - */
> - return p->u.useintr;
> - }
> + dgap_numboards = 0;
> +
> + pr_info("For the tools package please visit http://www.digi.com\n");
> +
> + /*
> + * Register our base character device into the kernel.
> + */
> +
> + /*
> + * Register management/dpa devices
> + */
> + rc = register_chrdev(DIGI_DGAP_MAJOR, "dgap", &dgap_board_fops);
> + if (rc < 0)
> + return rc;
> +
> + dgap_class = class_create(THIS_MODULE, "dgap_mgmt");
> + if (IS_ERR(dgap_class)) {
> + rc = PTR_ERR(dgap_class);
> + goto failed_class;
> }
>
> - /* If not found, then don't turn on interrupts. */
> - return 0;
> + device = device_create(dgap_class, NULL,
> + MKDEV(DIGI_DGAP_MAJOR, 0),
> + NULL, "dgap_mgmt");
> + if (IS_ERR(device)) {
> + rc = PTR_ERR(device);
> + goto failed_device;
> + }
> +
> + /* Start the poller */
> + spin_lock_irqsave(&dgap_poll_lock, flags);
> + init_timer(&dgap_poll_timer);
> + dgap_poll_timer.function = dgap_poll_handler;
> + dgap_poll_timer.data = 0;
> + dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
> + dgap_poll_timer.expires = dgap_poll_time;
> + spin_unlock_irqrestore(&dgap_poll_lock, flags);
> +
> + add_timer(&dgap_poll_timer);
> +
> + return rc;
> +
> +failed_device:
> + class_destroy(dgap_class);
> +failed_class:
> + unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
> + return rc;
> }
>
> -/*
> - * Given a board pointer, returns whether we turn on altpin or not.
> - */
> -static uint dgap_config_get_altpin(struct board_t *bd)
> +static void dgap_stop(void)
> {
> - struct cnode *p;
> + unsigned long lock_flags;
>
> - if (!bd)
> - return 0;
> + spin_lock_irqsave(&dgap_poll_lock, lock_flags);
> + dgap_poll_stop = 1;
> + spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
>
> - for (p = bd->bd_config; p; p = p->next) {
> - if (p->type == ANODE) {
> - /*
> - * check for pcxr types.
> - */
> - return p->u.altpin;
> - }
> - }
> + del_timer_sync(&dgap_poll_timer);
>
> - /* If not found, then don't turn on interrupts. */
> - return 0;
> + device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
> + class_destroy(dgap_class);
> + unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
> }
>
> /*
> - * Given a specific type of board, if found, detached link and
> - * returns the first occurrence in the list.
> + * dgap_cleanup_board()
> + *
> + * Free all the memory associated with a board
> */
> -static struct cnode *dgap_find_config(int type, int bus, int slot)
> +static void dgap_cleanup_board(struct board_t *brd)
> {
> - struct cnode *p, *prev, *prev2, *found;
> -
> - p = &dgap_head;
> + unsigned int i;
>
> - while (p->next) {
> - prev = p;
> - p = p->next;
> + if (!brd || brd->magic != DGAP_BOARD_MAGIC)
> + return;
>
> - if (p->type != BNODE)
> - continue;
> + dgap_free_irq(brd);
>
> - if (p->u.board.type != type)
> - continue;
> + tasklet_kill(&brd->helper_tasklet);
>
> - if (p->u.board.v_pcibus &&
> - p->u.board.pcibus != bus)
> - continue;
> + dgap_unmap(brd);
>
> - if (p->u.board.v_pcislot &&
> - p->u.board.pcislot != slot)
> - continue;
> + /* Free all allocated channels structs */
> + for (i = 0; i < MAXPORTS ; i++)
> + kfree(brd->channels[i]);
>
> - found = p;
> - /*
> - * Keep walking thru the list till we
> - * find the next board.
> - */
> - while (p->next) {
> - prev2 = p;
> - p = p->next;
> + kfree(brd->flipbuf);
> + kfree(brd->flipflagbuf);
>
> - if (p->type != BNODE)
> - continue;
> + dgap_board[brd->boardnum] = NULL;
>
> - /*
> - * Mark the end of our 1 board
> - * chain of configs.
> - */
> - prev2->next = NULL;
> + kfree(brd);
> +}
>
> - /*
> - * Link the "next" board to the
> - * previous board, effectively
> - * "unlinking" our board from
> - * the main config.
> - */
> - prev->next = p;
>
> - return found;
> - }
> - /*
> - * It must be the last board in the list.
> - */
> - prev->next = NULL;
> - return found;
> - }
> - return NULL;
> -}
> +/************************************************************************
> + *
> + * Driver load/unload functions
> + *
> + ************************************************************************/
>
> /*
> - * Given a board pointer, walks the config link, counting up
> - * all ports user specified should be on the board.
> - * (This does NOT mean they are all actually present right now tho)
> + * init_module()
> + *
> + * Module load. This is where it all starts.
> */
> -static uint dgap_config_get_num_prts(struct board_t *bd)
> +static int dgap_init_module(void)
> {
> - int count = 0;
> - struct cnode *p;
> + int rc;
>
> - if (!bd)
> - return 0;
> + pr_info("%s, Digi International Part Number %s\n", DG_NAME, DG_PART);
>
> - for (p = bd->bd_config; p; p = p->next) {
> + rc = dgap_start();
> + if (rc)
> + return rc;
>
> - switch (p->type) {
> - case BNODE:
> - /*
> - * check for pcxr types.
> - */
> - if (p->u.board.type > EPCFE)
> - count += p->u.board.nport;
> - break;
> - case CNODE:
> - count += p->u.conc.nport;
> - break;
> - case MNODE:
> - count += p->u.module.nport;
> - break;
> - }
> - }
> - return count;
> + rc = pci_register_driver(&dgap_driver);
> + if (rc)
> + goto err_stop;
> +
> + rc = dgap_create_driver_sysfiles(&dgap_driver);
> + if (rc)
> + goto err_unregister;
> +
> + dgap_driver_state = DRIVER_READY;
> +
> + return 0;
> +
> +err_unregister:
> + pci_unregister_driver(&dgap_driver);
> +err_stop:
> + dgap_stop();
> +
> + return rc;
> }
>
> -static char *dgap_create_config_string(struct board_t *bd, char *string)
> +/*
> + * dgap_cleanup_module()
> + *
> + * Module unload. This is where it all ends.
> + */
> +static void dgap_cleanup_module(void)
> {
> - char *ptr = string;
> - struct cnode *p;
> - struct cnode *q;
> - int speed;
> + unsigned int i;
> + ulong lock_flags;
>
> - if (!bd) {
> - *ptr = 0xff;
> - return string;
> - }
> + spin_lock_irqsave(&dgap_poll_lock, lock_flags);
> + dgap_poll_stop = 1;
> + spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
>
> - for (p = bd->bd_config; p; p = p->next) {
> + /* Turn off poller right away. */
> + del_timer_sync(&dgap_poll_timer);
>
> - switch (p->type) {
> - case LNODE:
> - *ptr = '\0';
> - ptr++;
> - *ptr = p->u.line.speed;
> - ptr++;
> - break;
> - case CNODE:
> - /*
> - * Because the EPC/con concentrators can have EM modules
> - * hanging off of them, we have to walk ahead in the
> - * list and keep adding the number of ports on each EM
> - * to the config. UGH!
> - */
> - speed = p->u.conc.speed;
> - q = p->next;
> - if (q && (q->type == MNODE)) {
> - *ptr = (p->u.conc.nport + 0x80);
> - ptr++;
> - p = q;
> - while (q->next && (q->next->type) == MNODE) {
> - *ptr = (q->u.module.nport + 0x80);
> - ptr++;
> - p = q;
> - q = q->next;
> - }
> - *ptr = q->u.module.nport;
> - ptr++;
> - } else {
> - *ptr = p->u.conc.nport;
> - ptr++;
> - }
> + dgap_remove_driver_sysfiles(&dgap_driver);
>
> - *ptr = speed;
> - ptr++;
> - break;
> - }
> + device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
> + class_destroy(dgap_class);
> + unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
> +
> + for (i = 0; i < dgap_numboards; ++i) {
> + dgap_remove_ports_sysfiles(dgap_board[i]);
> + dgap_cleanup_tty(dgap_board[i]);
> + dgap_cleanup_board(dgap_board[i]);
> }
>
> - *ptr = 0xff;
> - return string;
> + dgap_cleanup_nodes();
> +
> + if (dgap_numboards)
> + pci_unregister_driver(&dgap_driver);
> }
> +
> +module_init(dgap_init_module);
> +module_exit(dgap_cleanup_module);
> +
> +MODULE_LICENSE("GPL");
> +MODULE_AUTHOR("Digi International, http://www.digi.com");
> +MODULE_DESCRIPTION("Driver for the Digi International EPCA PCI based product line");
> +MODULE_SUPPORTED_DEVICE("dgap");
>
--
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