+++ /dev/null
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- */
-
-/*
- * In the original out of kernel Digi dgap driver, firmware
- * loading was done via user land to driver handshaking.
- *
- * For cards that support a concentrator (port expander),
- * I believe the concentrator its self told the card which
- * concentrator is actually attached and then that info
- * was used to tell user land which concentrator firmware
- * image was to be downloaded. I think even the BIOS or
- * FEP images required could change with the connection
- * of a particular concentrator.
- *
- * Since I have no access to any of these cards or
- * concentrators, I cannot put the correct concentrator
- * firmware file names into the firmware_info structure
- * as is now done for the BIOS and FEP images.
- *
- * I think, but am not certain, that the cards supporting
- * concentrators will function without them. So support
- * of these cards has been left in this driver.
- *
- * In order to fully support those cards, they would
- * either have to be acquired for dissection or maybe
- * Digi International could provide some assistance.
- */
-#undef DIGI_CONCENTRATORS_SUPPORTED
-
-#define pr_fmt(fmt) "dgap: " fmt
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/delay.h> /* For udelay */
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/sched.h>
-
-#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
-#include <linux/ctype.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_reg.h>
-#include <linux/io.h> /* For read[bwl]/write[bwl] */
-
-#include <linux/string.h>
-#include <linux/device.h>
-#include <linux/kdev_t.h>
-#include <linux/firmware.h>
-
-#include "dgap.h"
-
-/*
- * File operations permitted on Control/Management major.
- */
-static const struct file_operations dgap_board_fops = {
- .owner = THIS_MODULE,
-};
-
-static uint dgap_numboards;
-static struct board_t *dgap_board[MAXBOARDS];
-static ulong dgap_poll_counter;
-static int dgap_driver_state = DRIVER_INITIALIZED;
-static int dgap_poll_tick = 20; /* Poll interval - 20 ms */
-
-static struct class *dgap_class;
-
-static uint dgap_count = 500;
-
-/*
- * Poller stuff
- */
-static DEFINE_SPINLOCK(dgap_poll_lock); /* Poll scheduling lock */
-static ulong dgap_poll_time; /* Time of next poll */
-static uint dgap_poll_stop; /* Used to tell poller to stop */
-static struct timer_list dgap_poll_timer;
-
-/*
- SUPPORTED PRODUCTS
-
- Card Model Number of Ports Interface
- ----------------------------------------------------------------
- Acceleport Xem 4 - 64 (EIA232 & EIA422)
- Acceleport Xr 4 & 8 (EIA232)
- Acceleport Xr 920 4 & 8 (EIA232)
- Acceleport C/X 8 - 128 (EIA232)
- Acceleport EPC/X 8 - 224 (EIA232)
- Acceleport Xr/422 4 & 8 (EIA422)
- Acceleport 2r/920 2 (EIA232)
- Acceleport 4r/920 4 (EIA232)
- Acceleport 8r/920 8 (EIA232)
-
- IBM 8-Port Asynchronous PCI Adapter (EIA232)
- IBM 128-Port Asynchronous PCI Adapter (EIA232 & EIA422)
-*/
-
-static struct pci_device_id dgap_pci_tbl[] = {
- { DIGI_VID, PCI_DEV_XEM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { DIGI_VID, PCI_DEV_CX_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
- { DIGI_VID, PCI_DEV_CX_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
- { DIGI_VID, PCI_DEV_EPCJ_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
- { DIGI_VID, PCI_DEV_920_2_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
- { DIGI_VID, PCI_DEV_920_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
- { DIGI_VID, PCI_DEV_920_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
- { DIGI_VID, PCI_DEV_XR_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
- { DIGI_VID, PCI_DEV_XRJ_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
- { DIGI_VID, PCI_DEV_XR_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
- { DIGI_VID, PCI_DEV_XR_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
- { DIGI_VID, PCI_DEV_XR_SAIP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
- { DIGI_VID, PCI_DEV_XR_BULL_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
- { DIGI_VID, PCI_DEV_920_8_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
- { DIGI_VID, PCI_DEV_XEM_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
- {0,} /* 0 terminated list. */
-};
-MODULE_DEVICE_TABLE(pci, dgap_pci_tbl);
-
-/*
- * A generic list of Product names, PCI Vendor ID, and PCI Device ID.
- */
-struct board_id {
- uint config_type;
- u8 *name;
- uint maxports;
- uint dpatype;
-};
-
-static struct board_id dgap_ids[] = {
- {PPCM, PCI_DEV_XEM_NAME, 64, (T_PCXM | T_PCLITE | T_PCIBUS)},
- {PCX, PCI_DEV_CX_NAME, 128, (T_CX | T_PCIBUS) },
- {PCX, PCI_DEV_CX_IBM_NAME, 128, (T_CX | T_PCIBUS) },
- {PEPC, PCI_DEV_EPCJ_NAME, 224, (T_EPC | T_PCIBUS) },
- {APORT2_920P, PCI_DEV_920_2_NAME, 2, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {APORT4_920P, PCI_DEV_920_4_NAME, 4, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {APORT8_920P, PCI_DEV_920_8_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {PAPORT8, PCI_DEV_XR_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {PAPORT8, PCI_DEV_XRJ_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {PAPORT8, PCI_DEV_XR_422_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {PAPORT8, PCI_DEV_XR_IBM_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {PAPORT8, PCI_DEV_XR_SAIP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {PAPORT8, PCI_DEV_XR_BULL_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {APORT8_920P, PCI_DEV_920_8_HP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
- {PPCM, PCI_DEV_XEM_HP_NAME, 64, (T_PCXM | T_PCLITE | T_PCIBUS)},
- {0,} /* 0 terminated list. */
-};
-
-struct firmware_info {
- u8 *conf_name; /* dgap.conf */
- u8 *bios_name; /* BIOS filename */
- u8 *fep_name; /* FEP filename */
- u8 *con_name; /* Concentrator filename FIXME*/
- int num; /* sequence number */
-};
-
-/*
- * Firmware - BIOS, FEP, and CONC filenames
- */
-static struct firmware_info fw_info[] = {
- { "dgap/dgap.conf", "dgap/sxbios.bin", "dgap/sxfep.bin", NULL, 0 },
- { "dgap/dgap.conf", "dgap/cxpbios.bin", "dgap/cxpfep.bin", NULL, 1 },
- { "dgap/dgap.conf", "dgap/cxpbios.bin", "dgap/cxpfep.bin", NULL, 2 },
- { "dgap/dgap.conf", "dgap/pcibios.bin", "dgap/pcifep.bin", NULL, 3 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 4 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 5 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 6 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 7 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 8 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 9 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 10 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 11 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 12 },
- { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 13 },
- { "dgap/dgap.conf", "dgap/sxbios.bin", "dgap/sxfep.bin", NULL, 14 },
- {NULL,}
-};
-
-/*
- * Default transparent print information.
- */
-static struct digi_t dgap_digi_init = {
- .digi_flags = DIGI_COOK, /* Flags */
- .digi_maxcps = 100, /* Max CPS */
- .digi_maxchar = 50, /* Max chars in print queue */
- .digi_bufsize = 100, /* Printer buffer size */
- .digi_onlen = 4, /* size of printer on string */
- .digi_offlen = 4, /* size of printer off string */
- .digi_onstr = "\033[5i", /* ANSI printer on string ] */
- .digi_offstr = "\033[4i", /* ANSI printer off string ] */
- .digi_term = "ansi" /* default terminal type */
-};
-
-/*
- * Define a local default termios struct. All ports will be created
- * with this termios initially.
- *
- * This defines a raw port at 9600 baud, 8 data bits, no parity,
- * 1 stop bit.
- */
-
-static struct ktermios dgap_default_termios = {
- .c_iflag = (DEFAULT_IFLAGS), /* iflags */
- .c_oflag = (DEFAULT_OFLAGS), /* oflags */
- .c_cflag = (DEFAULT_CFLAGS), /* cflags */
- .c_lflag = (DEFAULT_LFLAGS), /* lflags */
- .c_cc = INIT_C_CC,
- .c_line = 0,
-};
-
-/*
- * Our needed internal static variables from dgap_parse.c
- */
-static struct cnode dgap_head;
-#define MAXCWORD 200
-static char dgap_cword[MAXCWORD];
-
-struct toklist {
- int token;
- char *string;
-};
-
-static struct toklist dgap_brdtype[] = {
- { PCX, "Digi_AccelePort_C/X_PCI" },
- { PEPC, "Digi_AccelePort_EPC/X_PCI" },
- { PPCM, "Digi_AccelePort_Xem_PCI" },
- { APORT2_920P, "Digi_AccelePort_2r_920_PCI" },
- { APORT4_920P, "Digi_AccelePort_4r_920_PCI" },
- { APORT8_920P, "Digi_AccelePort_8r_920_PCI" },
- { PAPORT4, "Digi_AccelePort_4r_PCI(EIA-232/RS-422)" },
- { PAPORT8, "Digi_AccelePort_8r_PCI(EIA-232/RS-422)" },
- { 0, NULL }
-};
-
-static struct toklist dgap_tlist[] = {
- { BEGIN, "config_begin" },
- { END, "config_end" },
- { BOARD, "board" },
- { PCIINFO, "pciinfo" },
- { LINE, "line" },
- { CONC, "conc" },
- { CONC, "concentrator" },
- { CX, "cx" },
- { CX, "ccon" },
- { EPC, "epccon" },
- { EPC, "epc" },
- { MOD, "module" },
- { ID, "id" },
- { STARTO, "start" },
- { SPEED, "speed" },
- { CABLE, "cable" },
- { CONNECT, "connect" },
- { METHOD, "method" },
- { STATUS, "status" },
- { CUSTOM, "Custom" },
- { BASIC, "Basic" },
- { MEM, "mem" },
- { MEM, "memory" },
- { PORTS, "ports" },
- { MODEM, "modem" },
- { NPORTS, "nports" },
- { TTYN, "ttyname" },
- { CU, "cuname" },
- { PRINT, "prname" },
- { CMAJOR, "major" },
- { ALTPIN, "altpin" },
- { USEINTR, "useintr" },
- { TTSIZ, "ttysize" },
- { CHSIZ, "chsize" },
- { BSSIZ, "boardsize" },
- { UNTSIZ, "schedsize" },
- { F2SIZ, "f2200size" },
- { VPSIZ, "vpixsize" },
- { 0, NULL }
-};
-
-/*
- * get a word from the input stream, also keep track of current line number.
- * words are separated by whitespace.
- */
-static char *dgap_getword(char **in)
-{
- char *ret_ptr = *in;
-
- char *ptr = strpbrk(*in, " \t\n");
-
- /* If no word found, return null */
- if (!ptr)
- return NULL;
-
- /* Mark new location for our buffer */
- *ptr = '\0';
- *in = ptr + 1;
-
- /* Eat any extra spaces/tabs/newlines that might be present */
- while (*in && **in && ((**in == ' ') ||
- (**in == '\t') ||
- (**in == '\n'))) {
- **in = '\0';
- *in = *in + 1;
- }
-
- return ret_ptr;
-}
-
-
-/*
- * 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;
-
- if (strstr(dgap_cword, "board")) {
- w = dgap_getword(in);
- if (!w)
- return 0;
- 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;
- }
- }
- }
-
- return 0;
-}
-
-/*
- * 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)
-{
- switch (p->type) {
- case LNODE:
- if (p->u.line.v_speed == 0) {
- pr_err("line speed not specified");
- return 1;
- }
- return 0;
-
- 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;
-
- 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;
-}
-
-/*
- * Given a board pointer, returns whether we should use interrupts or not.
- */
-static uint dgap_config_get_useintr(struct board_t *bd)
-{
- struct cnode *p;
-
- if (!bd)
- return 0;
-
- 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;
-}
-
-/*
- * Given a board pointer, returns whether we turn on altpin or not.
- */
-static uint dgap_config_get_altpin(struct board_t *bd)
-{
- struct cnode *p;
-
- if (!bd)
- return 0;
-
- for (p = bd->bd_config; p; p = p->next) {
- if (p->type == ANODE) {
- /*
- * check for pcxr types.
- */
- return p->u.altpin;
- }
- }
-
- /* If not found, then don't turn on interrupts. */
- return 0;
-}
-
-/*
- * Given a specific type of board, if found, detached link and
- * returns the first occurrence in the list.
- */
-static struct cnode *dgap_find_config(int type, int bus, int slot)
-{
- struct cnode *p, *prev, *prev2, *found;
-
- p = &dgap_head;
-
- while (p->next) {
- prev = p;
- p = p->next;
-
- if (p->type != BNODE)
- continue;
-
- if (p->u.board.type != type)
- continue;
-
- if (p->u.board.v_pcibus &&
- p->u.board.pcibus != bus)
- continue;
-
- if (p->u.board.v_pcislot &&
- p->u.board.pcislot != slot)
- continue;
-
- found = p;
- /*
- * Keep walking thru the list till we
- * find the next board.
- */
- while (p->next) {
- prev2 = p;
- p = p->next;
-
- 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;
-}
-
-/*
- * 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 uint dgap_config_get_num_prts(struct board_t *bd)
-{
- int count = 0;
- struct cnode *p;
-
- if (!bd)
- return 0;
-
- for (p = bd->bd_config; p; p = p->next) {
- 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;
-}
-
-static char *dgap_create_config_string(struct board_t *bd, char *string)
-{
- char *ptr = string;
- struct cnode *p;
- struct cnode *q;
- int speed;
-
- if (!bd) {
- *ptr = 0xff;
- return string;
- }
-
- for (p = bd->bd_config; p; p = p->next) {
- 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++;
- }
-
- *ptr = speed;
- ptr++;
- break;
- }
- }
-
- *ptr = 0xff;
- return string;
-}
-
-/*
- * 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;
-
- p = &dgap_head;
- brd = line = conc = NULL;
-
- /* perhaps we are adding to an existing list? */
- while (p->next)
- p = p->next;
-
- /* file must start with a BEGIN */
- while ((rc = dgap_gettok(in)) != BEGIN) {
- if (rc == 0) {
- pr_err("unexpected EOF");
- return -1;
- }
- }
-
- for (; ;) {
- int board_type = 0;
- int conc_type = 0;
- int module_type = 0;
-
- rc = dgap_gettok(in);
- if (rc == 0) {
- pr_err("unexpected EOF");
- return -1;
- }
-
- switch (rc) {
- case BEGIN: /* should only be 1 begin */
- pr_err("unexpected config_begin\n");
- return -1;
-
- case END:
- return 0;
-
- case BOARD: /* board info */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
-
- p->type = BNODE;
- p->u.board.status = kstrdup("No", GFP_KERNEL);
- line = conc = NULL;
- brd = p;
- linecnt = -1;
-
- board_type = dgap_gettok(in);
- if (board_type == 0) {
- pr_err("board !!type not specified");
- return -1;
- }
-
- p->u.board.type = board_type;
-
- break;
-
- 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;
- }
- kfree(p->u.board.addrstr);
- 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;
-
- 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;
- }
- kfree(p->u.board.pcibusstr);
- 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;
- }
- kfree(p->u.board.pcislotstr);
- 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;
-
- 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;
- }
- kfree(p->u.board.method);
- p->u.board.method = kstrdup(s, GFP_KERNEL);
- p->u.board.v_method = 1;
- break;
-
- 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;
- }
- kfree(p->u.board.status);
- p->u.board.status = kstrdup(s, GFP_KERNEL);
- break;
-
- 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;
-
- case ID: /* letter ID used in tty name */
- s = dgap_getword(in);
- if (!s) {
- pr_err("unexpected end of file");
- return -1;
- }
- kfree(p->u.board.status);
- p->u.board.status = kstrdup(s, GFP_KERNEL);
-
- if (p->type == CNODE) {
- kfree(p->u.conc.id);
- p->u.conc.id = kstrdup(s, GFP_KERNEL);
- p->u.conc.v_id = 1;
- } else if (p->type == MNODE) {
- kfree(p->u.module.id);
- 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;
-
- 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;
-
- case TTYN: /* tty name prefix */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = TNODE;
-
- 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;
-
- break;
-
- case CU: /* cu name prefix */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = CUNODE;
-
- 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;
-
- break;
-
- 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;
- }
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- 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;
- }
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = CNODE;
- conc = p;
-
- 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;
- }
-
- p->u.conc.type = conc_type;
-
- break;
-
- 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 -ENOMEM;
-
- p = p->next;
- p->type = MNODE;
-
- if (linecnt)
- brd->u.board.module2++;
- else
- brd->u.board.module1++;
-
- 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;
- }
-
- p->u.module.type = module_type;
-
- break;
-
- case CABLE:
- if (p->type == LNODE) {
- s = dgap_getword(in);
- if (!s) {
- pr_err("unexpected end of file");
- return -1;
- }
- kfree(p->u.line.cable);
- p->u.line.cable = kstrdup(s, GFP_KERNEL);
- p->u.line.v_cable = 1;
- }
- break;
-
- 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;
-
- case CONNECT:
- if (p->type == CNODE) {
- s = dgap_getword(in);
- if (!s) {
- pr_err("unexpected end of file");
- return -1;
- }
- kfree(p->u.conc.connect);
- 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;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = PNODE;
-
- 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;
-
- break;
-
- case CMAJOR: /* major number */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = JNODE;
-
- 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;
-
- case ALTPIN: /* altpin setting */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = ANODE;
-
- 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;
-
- case USEINTR: /* enable interrupt setting */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- 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;
-
- case TTSIZ: /* size of tty structure */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = TSNODE;
-
- 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;
-
- case CHSIZ: /* channel structure size */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = CSNODE;
-
- 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;
-
- case BSSIZ: /* board structure size */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = BSNODE;
-
- 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;
-
- case UNTSIZ: /* sched structure size */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = USNODE;
-
- 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;
-
- case F2SIZ: /* f2200 structure size */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = FSNODE;
-
- 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;
-
- case VPSIZ: /* vpix structure size */
- if (dgap_checknode(p))
- return -1;
-
- p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
- if (!p->next)
- return -ENOMEM;
-
- p = p->next;
- p->type = VSNODE;
-
- 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;
- }
- }
-}
-
-static void dgap_cleanup_nodes(void)
-{
- struct cnode *p;
-
- p = &dgap_head;
-
- while (p) {
- struct cnode *tmp = p->next;
-
- if (p->type == NULLNODE) {
- p = tmp;
- continue;
- }
-
- switch (p->type) {
- case BNODE:
- 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;
- }
-
- kfree(p->u.board.status);
- kfree(p);
- p = tmp;
- }
-}
-
-/*
- * 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;
-
- 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;
-
- return readw(vaddr + offset);
-}
-
-/*
- * Remap PCI memory.
- */
-static int dgap_remap(struct board_t *brd)
-{
- if (!brd || brd->magic != DGAP_BOARD_MAGIC)
- return -EIO;
-
- if (!request_mem_region(brd->membase, 0x200000, "dgap"))
- return -ENOMEM;
-
- if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000, "dgap"))
- goto err_req_mem;
-
- brd->re_map_membase = ioremap(brd->membase, 0x200000);
- if (!brd->re_map_membase)
- goto err_remap_mem;
-
- brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000);
- if (!brd->re_map_port)
- goto err_remap_port;
-
- return 0;
-
-err_remap_port:
- iounmap(brd->re_map_membase);
-err_remap_mem:
- release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
-err_req_mem:
- release_mem_region(brd->membase, 0x200000);
-
- return -ENOMEM;
-}
-
-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);
-}
-
-/*
- * 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;
- }
- }
-
- count += 1;
- ch->pscan_state = 0;
- }
- }
- *len = count;
-}
-
-/*=======================================================================
- *
- * dgap_input - Process received data.
- *
- * ch - Pointer to channel structure.
- *
- *=======================================================================*/
-
-static void dgap_input(struct channel_t *ch)
-{
- struct board_t *bd;
- struct bs_t __iomem *bs;
- struct tty_struct *tp;
- struct tty_ldisc *ld;
- uint rmask;
- uint head;
- uint tail;
- int data_len;
- ulong lock_flags;
- ulong lock_flags2;
- int flip_len;
- int len;
- int n;
- u8 *buf;
- u8 tmpchar;
- int s;
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- tp = ch->ch_tun.un_tty;
-
- bs = ch->ch_bs;
- if (!bs)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- /*
- * Figure the number of characters in the buffer.
- * Exit immediately if none.
- */
-
- rmask = ch->ch_rsize - 1;
-
- head = readw(&bs->rx_head);
- head &= rmask;
- tail = readw(&bs->rx_tail);
- tail &= rmask;
-
- data_len = (head - tail) & rmask;
-
- if (data_len == 0) {
- writeb(1, &bs->idata);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return;
- }
-
- /*
- * If the device is not open, or CREAD is off, flush
- * input data and return immediately.
- */
- if ((bd->state != BOARD_READY) || !tp ||
- (tp->magic != TTY_MAGIC) ||
- !(ch->ch_tun.un_flags & UN_ISOPEN) ||
- !(tp->termios.c_cflag & CREAD) ||
- (ch->ch_tun.un_flags & UN_CLOSING)) {
- writew(head, &bs->rx_tail);
- writeb(1, &bs->idata);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return;
- }
-
- /*
- * If we are throttled, simply don't read any data.
- */
- if (ch->ch_flags & CH_RXBLOCK) {
- writeb(1, &bs->idata);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return;
- }
-
- /*
- * Ignore oruns.
- */
- tmpchar = readb(&bs->orun);
- if (tmpchar) {
- ch->ch_err_overrun++;
- writeb(0, &bs->orun);
- }
-
- /* Decide how much data we can send into the tty layer */
- flip_len = TTY_FLIPBUF_SIZE;
-
- /* Chop down the length, if needed */
- len = min(data_len, flip_len);
- len = min(len, (N_TTY_BUF_SIZE - 1));
-
- ld = tty_ldisc_ref(tp);
-
-#ifdef TTY_DONT_FLIP
- /*
- * If the DONT_FLIP flag is on, don't flush our buffer, and act
- * like the ld doesn't have any space to put the data right now.
- */
- if (test_bit(TTY_DONT_FLIP, &tp->flags))
- len = 0;
-#endif
-
- /*
- * If we were unable to get a reference to the ld,
- * don't flush our buffer, and act like the ld doesn't
- * have any space to put the data right now.
- */
- if (!ld) {
- len = 0;
- } else {
- /*
- * If ld doesn't have a pointer to a receive_buf function,
- * flush the data, then act like the ld doesn't have any
- * space to put the data right now.
- */
- if (!ld->ops->receive_buf) {
- writew(head, &bs->rx_tail);
- len = 0;
- }
- }
-
- if (len <= 0) {
- writeb(1, &bs->idata);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- if (ld)
- tty_ldisc_deref(ld);
- return;
- }
-
- buf = ch->ch_bd->flipbuf;
- n = len;
-
- /*
- * n now contains the most amount of data we can copy,
- * bounded either by our buffer size or the amount
- * of data the card actually has pending...
- */
- while (n) {
- s = ((head >= tail) ? head : ch->ch_rsize) - tail;
- s = min(s, n);
-
- if (s <= 0)
- break;
-
- memcpy_fromio(buf, ch->ch_raddr + tail, s);
-
- tail += s;
- buf += s;
-
- n -= s;
- /* Flip queue if needed */
- tail &= rmask;
- }
-
- writew(tail, &bs->rx_tail);
- writeb(1, &bs->idata);
- ch->ch_rxcount += len;
-
- /*
- * If we are completely raw, we don't need to go through a lot
- * of the tty layers that exist.
- * In this case, we take the shortest and fastest route we
- * can to relay the data to the user.
- *
- * On the other hand, if we are not raw, we need to go through
- * the tty layer, which has its API more well defined.
- */
- if (I_PARMRK(tp) || I_BRKINT(tp) || I_INPCK(tp)) {
- dgap_parity_scan(ch, ch->ch_bd->flipbuf,
- ch->ch_bd->flipflagbuf, &len);
-
- len = tty_buffer_request_room(tp->port, len);
- tty_insert_flip_string_flags(tp->port, ch->ch_bd->flipbuf,
- ch->ch_bd->flipflagbuf, len);
- } else {
- len = tty_buffer_request_room(tp->port, len);
- tty_insert_flip_string(tp->port, ch->ch_bd->flipbuf, len);
- }
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- /* Tell the tty layer its okay to "eat" the data now */
- tty_flip_buffer_push(tp->port);
-
- if (ld)
- tty_ldisc_deref(ld);
-}
-
-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.
- ************************************************************************/
-static void dgap_carrier(struct channel_t *ch)
-{
- struct board_t *bd;
-
- int virt_carrier = 0;
- int phys_carrier = 0;
-
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
-
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- /* Make sure altpin is always set correctly */
- if (ch->ch_digi.digi_flags & DIGI_ALTPIN) {
- ch->ch_dsr = DM_CD;
- ch->ch_cd = DM_DSR;
- } else {
- ch->ch_dsr = DM_DSR;
- ch->ch_cd = DM_CD;
- }
-
- if (ch->ch_mistat & D_CD(ch))
- phys_carrier = 1;
-
- if (ch->ch_digi.digi_flags & DIGI_FORCEDCD)
- virt_carrier = 1;
-
- if (ch->ch_c_cflag & CLOCAL)
- virt_carrier = 1;
-
- /*
- * Test for a VIRTUAL carrier transition to HIGH.
- */
- if (((ch->ch_flags & CH_FCAR) == 0) && (virt_carrier == 1)) {
- /*
- * When carrier rises, wake any threads waiting
- * for carrier in the open routine.
- */
-
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
- }
-
- /*
- * Test for a PHYSICAL carrier transition to HIGH.
- */
- if (((ch->ch_flags & CH_CD) == 0) && (phys_carrier == 1)) {
- /*
- * When carrier rises, wake any threads waiting
- * for carrier in the open routine.
- */
-
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
- }
-
- /*
- * Test for a PHYSICAL transition to low, so long as we aren't
- * currently ignoring physical transitions (which is what "virtual
- * carrier" indicates).
- *
- * The transition of the virtual carrier to low really doesn't
- * matter... it really only means "ignore carrier state", not
- * "make pretend that carrier is there".
- */
- if ((virt_carrier == 0) &&
- ((ch->ch_flags & CH_CD) != 0) &&
- (phys_carrier == 0)) {
- /*
- * When carrier drops:
- *
- * Drop carrier on all open units.
- *
- * Flush queues, waking up any task waiting in the
- * line discipline.
- *
- * Send a hangup to the control terminal.
- *
- * Enable all select calls.
- */
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
-
- if (ch->ch_tun.un_open_count > 0)
- tty_hangup(ch->ch_tun.un_tty);
-
- if (ch->ch_pun.un_open_count > 0)
- tty_hangup(ch->ch_pun.un_tty);
- }
-
- /*
- * Make sure that our cached values reflect the current reality.
- */
- if (virt_carrier == 1)
- ch->ch_flags |= CH_FCAR;
- else
- ch->ch_flags &= ~CH_FCAR;
-
- if (phys_carrier == 1)
- ch->ch_flags |= CH_CD;
- else
- ch->ch_flags &= ~CH_CD;
-}
-
-/*=======================================================================
- *
- * dgap_event - FEP to host event processing routine.
- *
- * bd - Board of current event.
- *
- *=======================================================================*/
-static int dgap_event(struct board_t *bd)
-{
- 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;
-
- 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.
- */
- while (tail != head) {
- /*
- * Get interrupt information.
- */
-
- event = bd->re_map_membase + tail + EVSTART;
-
- port = ioread8(event);
- reason = ioread8(event + 1);
- modem = ioread8(event + 2);
- 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);
- }
-
- 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->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_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);
- }
-
- if (!brd->membase) {
- ret = -ENODEV;
- goto free_brd;
- }
-
- 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_DGAP;
-
- /*
- * 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 = 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 {
- /*
- * 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);
- }
- }
-
-schedule_poller:
-
- /*
- * 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);
-
- 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;
-
- /*
- * 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);
- }
-}
-
-/*=======================================================================
- *
- * dgap_wmove - Write data to FEP buffer.
- *
- * ch - Pointer to channel structure.
- * buf - Pointer 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)) {
- /*
- * 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);
- }
-
- if (ch->ch_digi.digi_flags & DIGI_ALTPIN)
- iflag |= IALTPIN;
-
- if (iflag != ch->ch_fepiflag) {
- ch->ch_fepiflag = iflag;
-
- /* Okay to have channel and board locks held calling this */
- dgap_cmdw(ch, SIFLAG, (u16)ch->ch_fepiflag, 0);
- }
-
- /*
- * Select hardware handshaking.
- */
- 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);
- }
-
- /*
- * 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;
-}
-
-/*
- * dgap_block_til_ready()
- *
- * Wait for DCD, if needed.
- */
-static int dgap_block_til_ready(struct tty_struct *tty, struct file *file,
- struct channel_t *ch)
-{
- int retval = 0;
- struct un_t *un;
- ulong lock_flags;
- uint old_flags;
- int sleep_on_un_flags;
-
- if (!tty || tty->magic != TTY_MAGIC || !file || !ch ||
- ch->magic != DGAP_CHANNEL_MAGIC)
- return -EIO;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return -EIO;
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
- ch->ch_wopen++;
-
- /* Loop forever */
- while (1) {
- sleep_on_un_flags = 0;
-
- /*
- * If board has failed somehow during our sleep,
- * bail with error.
- */
- if (ch->ch_bd->state == BOARD_FAILED) {
- retval = -EIO;
- break;
- }
-
- /* If tty was hung up, break out of loop and set error. */
- if (tty_hung_up_p(file)) {
- retval = -EAGAIN;
- break;
- }
-
- /*
- * If either unit is in the middle of the fragile part of close,
- * we just cannot touch the channel safely.
- * Go back to sleep, knowing that when the channel can be
- * touched safely, the close routine will signal the
- * ch_wait_flags to wake us back up.
- */
- if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) &
- UN_CLOSING)) {
- /*
- * Our conditions to leave cleanly and happily:
- * 1) NONBLOCKING on the tty is set.
- * 2) CLOCAL is set.
- * 3) DCD (fake or real) is active.
- */
-
- if (file->f_flags & O_NONBLOCK)
- break;
-
- if (tty->flags & (1 << TTY_IO_ERROR))
- break;
-
- if (ch->ch_flags & CH_CD)
- break;
-
- if (ch->ch_flags & CH_FCAR)
- break;
- } else {
- sleep_on_un_flags = 1;
- }
-
- /*
- * If there is a signal pending, the user probably
- * interrupted (ctrl-c) us.
- * Leave loop with error set.
- */
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-
- /*
- * Store the flags before we let go of channel lock
- */
- if (sleep_on_un_flags)
- old_flags = ch->ch_tun.un_flags | ch->ch_pun.un_flags;
- else
- old_flags = ch->ch_flags;
-
- /*
- * Let go of channel lock before calling schedule.
- * Our poller will get any FEP events and wake us up when DCD
- * eventually goes active.
- */
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- /*
- * Wait for something in the flags to change
- * from the current value.
- */
- if (sleep_on_un_flags) {
- retval = wait_event_interruptible(un->un_flags_wait,
- (old_flags != (ch->ch_tun.un_flags |
- ch->ch_pun.un_flags)));
- } else {
- retval = wait_event_interruptible(ch->ch_flags_wait,
- (old_flags != ch->ch_flags));
- }
-
- /*
- * We got woken up for some reason.
- * Before looping around, grab our channel lock.
- */
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
- }
-
- ch->ch_wopen--;
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- return retval;
-}
-
-/*
- * dgap_tty_flush_buffer()
- *
- * Flush Tx buffer (make in == out)
- */
-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;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- 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_hangup()
- *
- * Hangup the port. Like a close, but don't wait for output to drain.
- */
-static void dgap_tty_hangup(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- /* flush the transmit queues */
- dgap_tty_flush_buffer(tty);
-}
-
-/*
- * dgap_tty_chars_in_buffer()
- *
- * Return number of characters that have not been transmitted yet.
- *
- * This routine is used by the line discipline to determine if there
- * is data waiting to be transmitted/drained/flushed or not.
- */
-static int dgap_tty_chars_in_buffer(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- struct bs_t __iomem *bs;
- u8 tbusy;
- uint chars;
- u16 thead, ttail, tmask, chead, ctail;
- ulong lock_flags = 0;
- ulong lock_flags2 = 0;
-
- if (!tty)
- return 0;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
-
- bs = ch->ch_bs;
- if (!bs)
- return 0;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- tmask = (ch->ch_tsize - 1);
-
- /* Get Transmit queue pointers */
- thead = readw(&bs->tx_head) & tmask;
- ttail = readw(&bs->tx_tail) & tmask;
-
- /* Get tbusy flag */
- tbusy = readb(&bs->tbusy);
-
- /* Get Command queue pointers */
- chead = readw(&ch->ch_cm->cm_head);
- ctail = readw(&ch->ch_cm->cm_tail);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- /*
- * The only way we know for sure if there is no pending
- * data left to be transferred, is if:
- * 1) Transmit head and tail are equal (empty).
- * 2) Command queue head and tail are equal (empty).
- * 3) The "TBUSY" flag is 0. (Transmitter not busy).
- */
-
- if ((ttail == thead) && (tbusy == 0) && (chead == ctail)) {
- chars = 0;
- } else {
- if (thead >= ttail)
- chars = thead - ttail;
- else
- chars = thead - ttail + ch->ch_tsize;
- /*
- * Fudge factor here.
- * If chars is zero, we know that the command queue had
- * something in it or tbusy was set. Because we cannot
- * be sure if there is still some data to be transmitted,
- * lets lie, and tell ld we have 1 byte left.
- */
- if (chars == 0) {
- /*
- * If TBUSY is still set, and our tx buffers are empty,
- * force the firmware to send me another wakeup after
- * TBUSY has been cleared.
- */
- if (tbusy != 0) {
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
- un->un_flags |= UN_EMPTY;
- writeb(1, &bs->iempty);
- spin_unlock_irqrestore(&ch->ch_lock,
- lock_flags);
- }
- chars = 1;
- }
- }
-
- return chars;
-}
-
-static int dgap_wait_for_drain(struct tty_struct *tty)
-{
- struct channel_t *ch;
- struct un_t *un;
- struct bs_t __iomem *bs;
- int ret = 0;
- uint count = 1;
- ulong lock_flags = 0;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -EIO;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return -EIO;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return -EIO;
-
- bs = ch->ch_bs;
- if (!bs)
- return -EIO;
-
- /* Loop until data is drained */
- while (count != 0) {
- count = dgap_tty_chars_in_buffer(tty);
-
- if (count == 0)
- break;
-
- /* Set flag waiting for drain */
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
- un->un_flags |= UN_EMPTY;
- writeb(1, &bs->iempty);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- /* Go to sleep till we get woken up */
- ret = wait_event_interruptible(un->un_flags_wait,
- ((un->un_flags & UN_EMPTY) == 0));
- /* If ret is non-zero, user ctrl-c'ed us */
- if (ret)
- break;
- }
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
- un->un_flags &= ~(UN_EMPTY);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- return ret;
-}
-
-/*
- * dgap_maxcps_room
- *
- * Reduces bytes_available to the max number of characters
- * that can be sent currently given the maxcps value, and
- * returns the new bytes_available. This only affects printer
- * output.
- */
-static int dgap_maxcps_room(struct channel_t *ch, struct un_t *un,
- int bytes_available)
-{
- /*
- * If its not the Transparent print device, return
- * the full data amount.
- */
- if (un->un_type != DGAP_PRINT)
- return bytes_available;
-
- if (ch->ch_digi.digi_maxcps > 0 && ch->ch_digi.digi_bufsize > 0) {
- int cps_limit = 0;
- unsigned long current_time = jiffies;
- unsigned long buffer_time = current_time +
- (HZ * ch->ch_digi.digi_bufsize) /
- ch->ch_digi.digi_maxcps;
-
- if (ch->ch_cpstime < current_time) {
- /* buffer is empty */
- ch->ch_cpstime = current_time; /* reset ch_cpstime */
- cps_limit = ch->ch_digi.digi_bufsize;
- } else if (ch->ch_cpstime < buffer_time) {
- /* still room in the buffer */
- cps_limit = ((buffer_time - ch->ch_cpstime) *
- ch->ch_digi.digi_maxcps) / HZ;
- } else {
- /* no room in the buffer */
- cps_limit = 0;
- }
-
- bytes_available = min(cps_limit, bytes_available);
- }
-
- return bytes_available;
-}
-
-static inline void dgap_set_firmware_event(struct un_t *un, unsigned int event)
-{
- struct channel_t *ch;
- struct bs_t __iomem *bs;
-
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
- bs = ch->ch_bs;
- if (!bs)
- return;
-
- if ((event & UN_LOW) != 0) {
- if ((un->un_flags & UN_LOW) == 0) {
- un->un_flags |= UN_LOW;
- writeb(1, &bs->ilow);
- }
- }
- if ((event & UN_LOW) != 0) {
- if ((un->un_flags & UN_EMPTY) == 0) {
- un->un_flags |= UN_EMPTY;
- writeb(1, &bs->iempty);
- }
- }
-}
-
-/*
- * dgap_tty_write_room()
- *
- * Return space available in Tx buffer
- */
-static int dgap_tty_write_room(struct tty_struct *tty)
-{
- struct channel_t *ch;
- struct un_t *un;
- struct bs_t __iomem *bs;
- u16 head, tail, tmask;
- int ret;
- ulong lock_flags = 0;
-
- if (!tty)
- return 0;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
-
- bs = ch->ch_bs;
- if (!bs)
- return 0;
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
- tmask = ch->ch_tsize - 1;
- head = readw(&bs->tx_head) & tmask;
- tail = readw(&bs->tx_tail) & tmask;
-
- ret = tail - head - 1;
- if (ret < 0)
- ret += ch->ch_tsize;
-
- /* Limit printer to maxcps */
- ret = dgap_maxcps_room(ch, un, ret);
-
- /*
- * If we are printer device, leave space for
- * possibly both the on and off strings.
- */
- if (un->un_type == DGAP_PRINT) {
- if (!(ch->ch_flags & CH_PRON))
- ret -= ch->ch_digi.digi_onlen;
- ret -= ch->ch_digi.digi_offlen;
- } else {
- if (ch->ch_flags & CH_PRON)
- ret -= ch->ch_digi.digi_offlen;
- }
-
- if (ret < 0)
- ret = 0;
-
- /*
- * Schedule FEP to wake us up if needed.
- *
- * TODO: This might be overkill...
- * Do we really need to schedule callbacks from the FEP
- * in every case? Can we get smarter based on ret?
- */
- dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- return ret;
-}
-
-/*
- * dgap_tty_write()
- *
- * Take data from the user or kernel and send it out to the FEP.
- * In here exists all the Transparent Print magic as well.
- */
-static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf,
- int count)
-{
- struct channel_t *ch;
- struct un_t *un;
- struct bs_t __iomem *bs;
- char __iomem *vaddr;
- u16 head, tail, tmask, remain;
- int bufcount, n;
- ulong lock_flags;
-
- if (!tty)
- return 0;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
-
- bs = ch->ch_bs;
- if (!bs)
- return 0;
-
- if (!count)
- return 0;
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
- /* Get our space available for the channel from the board */
- tmask = ch->ch_tsize - 1;
- head = readw(&(bs->tx_head)) & tmask;
- tail = readw(&(bs->tx_tail)) & tmask;
-
- bufcount = tail - head - 1;
- if (bufcount < 0)
- bufcount += ch->ch_tsize;
-
- /*
- * Limit printer output to maxcps overall, with bursts allowed
- * up to bufsize characters.
- */
- bufcount = dgap_maxcps_room(ch, un, bufcount);
-
- /*
- * Take minimum of what the user wants to send, and the
- * space available in the FEP buffer.
- */
- count = min(count, bufcount);
-
- /*
- * Bail if no space left.
- */
- if (count <= 0) {
- dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
- return 0;
- }
-
- /*
- * Output the printer ON string, if we are in terminal mode, but
- * need to be in printer mode.
- */
- if ((un->un_type == DGAP_PRINT) && !(ch->ch_flags & CH_PRON)) {
- dgap_wmove(ch, ch->ch_digi.digi_onstr,
- (int)ch->ch_digi.digi_onlen);
- head = readw(&bs->tx_head) & tmask;
- ch->ch_flags |= CH_PRON;
- }
-
- /*
- * On the other hand, output the printer OFF string, if we are
- * currently in printer mode, but need to output to the terminal.
- */
- 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);
- head = readw(&bs->tx_head) & tmask;
- ch->ch_flags &= ~CH_PRON;
- }
-
- n = count;
-
- /*
- * 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.
- */
- remain = ch->ch_tstart + ch->ch_tsize - head;
-
- if (n >= remain) {
- n -= remain;
- vaddr = ch->ch_taddr + head;
-
- memcpy_toio(vaddr, (u8 *)buf, remain);
-
- head = ch->ch_tstart;
- buf += remain;
- }
-
- if (n > 0) {
- /*
- * Move rest of data.
- */
- vaddr = ch->ch_taddr + head;
- remain = n;
-
- memcpy_toio(vaddr, (u8 *)buf, remain);
- head += remain;
- }
-
- if (count) {
- ch->ch_txcount += count;
- head &= tmask;
- writew(head, &bs->tx_head);
- }
-
- dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
-
- /*
- * If this is the print device, and the
- * printer is still on, we need to turn it
- * off before going idle. If the buffer is
- * non-empty, wait until it goes empty.
- * Otherwise turn it off right now.
- */
- if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
- tail = readw(&bs->tx_tail) & tmask;
-
- if (tail != head) {
- un->un_flags |= UN_EMPTY;
- writeb(1, &bs->iempty);
- } else {
- dgap_wmove(ch, ch->ch_digi.digi_offstr,
- (int)ch->ch_digi.digi_offlen);
- head = readw(&bs->tx_head) & tmask;
- ch->ch_flags &= ~CH_PRON;
- }
- }
-
- /* Update printer buffer empty time. */
- if ((un->un_type == DGAP_PRINT) && (ch->ch_digi.digi_maxcps > 0)
- && (ch->ch_digi.digi_bufsize > 0)) {
- ch->ch_cpstime += (HZ * count) / ch->ch_digi.digi_maxcps;
- }
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- return count;
-}
-
-/*
- * 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)
-{
- struct channel_t *ch;
- struct un_t *un;
- int result;
- u8 mstat;
- ulong lock_flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -EIO;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return -EIO;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return -EIO;
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
- mstat = readb(&ch->ch_bs->m_stat);
- /* Append any outbound signals that might be pending... */
- mstat |= ch->ch_mostat;
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- result = 0;
-
- if (mstat & D_DTR(ch))
- result |= TIOCM_DTR;
- if (mstat & D_RTS(ch))
- result |= TIOCM_RTS;
- if (mstat & D_CTS(ch))
- result |= TIOCM_CTS;
- if (mstat & D_DSR(ch))
- result |= TIOCM_DSR;
- if (mstat & D_RI(ch))
- result |= TIOCM_RI;
- if (mstat & D_CD(ch))
- result |= TIOCM_CD;
-
- return result;
-}
-
-/*
- * dgap_tty_tiocmset()
- *
- * Set modem signals, called by ld.
- */
-static int dgap_tty_tiocmset(struct tty_struct *tty,
- unsigned int set, unsigned int clear)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -EIO;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return -EIO;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return -EIO;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return -EIO;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- if (set & TIOCM_RTS) {
- ch->ch_mforce |= D_RTS(ch);
- ch->ch_mval |= D_RTS(ch);
- }
-
- if (set & TIOCM_DTR) {
- ch->ch_mforce |= D_DTR(ch);
- ch->ch_mval |= D_DTR(ch);
- }
-
- if (clear & TIOCM_RTS) {
- ch->ch_mforce |= D_RTS(ch);
- ch->ch_mval &= ~(D_RTS(ch));
- }
-
- if (clear & TIOCM_DTR) {
- ch->ch_mforce |= D_DTR(ch);
- ch->ch_mval &= ~(D_DTR(ch));
- }
-
- dgap_param(ch, bd, un->un_type);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-}
-
-/*
- * dgap_tty_send_break()
- *
- * Send a Break, called by ld.
- */
-static int dgap_tty_send_break(struct tty_struct *tty, int msec)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -EIO;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return -EIO;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return -EIO;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return -EIO;
-
- switch (msec) {
- case -1:
- msec = 0xFFFF;
- break;
- case 0:
- msec = 1;
- break;
- default:
- msec /= 10;
- break;
- }
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-#if 0
- dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
-#endif
- dgap_cmdw(ch, SBREAK, (u16)msec, 0);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-}
-
-/*
- * dgap_tty_wait_until_sent()
- *
- * wait until data has been transmitted, called by ld.
- */
-static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout)
-{
- dgap_wait_for_drain(tty);
-}
-
-/*
- * dgap_send_xchar()
- *
- * send a high priority character, called by ld.
- */
-static void dgap_tty_send_xchar(struct tty_struct *tty, char c)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- /*
- * This is technically what we should do.
- * However, the NIST tests specifically want
- * to see each XON or XOFF character that it
- * sends, so lets just send each character
- * by hand...
- */
-#if 0
- if (c == STOP_CHAR(tty))
- dgap_cmdw(ch, RPAUSE, 0, 0);
- else if (c == START_CHAR(tty))
- dgap_cmdw(ch, RRESUME, 0, 0);
- else
- dgap_wmove(ch, &c, 1);
-#else
- dgap_wmove(ch, &c, 1);
-#endif
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-/*
- * Return modem signals to ld.
- */
-static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value)
-{
- int result;
- u8 mstat;
- ulong lock_flags;
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
- mstat = readb(&ch->ch_bs->m_stat);
- /* Append any outbound signals that might be pending... */
- mstat |= ch->ch_mostat;
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- result = 0;
-
- if (mstat & D_DTR(ch))
- result |= TIOCM_DTR;
- if (mstat & D_RTS(ch))
- result |= TIOCM_RTS;
- if (mstat & D_CTS(ch))
- result |= TIOCM_CTS;
- if (mstat & D_DSR(ch))
- result |= TIOCM_DSR;
- if (mstat & D_RI(ch))
- result |= TIOCM_RI;
- if (mstat & D_CD(ch))
- result |= TIOCM_CD;
-
- return put_user(result, value);
-}
-
-/*
- * dgap_set_modem_info()
- *
- * Set modem signals, called by ld.
- */
-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)
-{
- int ret;
- unsigned int arg;
- ulong lock_flags;
- ulong lock_flags2;
-
- ret = get_user(arg, value);
- if (ret)
- return ret;
-
- switch (command) {
- case TIOCMBIS:
- if (arg & TIOCM_RTS) {
- ch->ch_mforce |= D_RTS(ch);
- ch->ch_mval |= D_RTS(ch);
- }
-
- if (arg & TIOCM_DTR) {
- ch->ch_mforce |= D_DTR(ch);
- ch->ch_mval |= D_DTR(ch);
- }
-
- break;
-
- case TIOCMBIC:
- if (arg & TIOCM_RTS) {
- ch->ch_mforce |= D_RTS(ch);
- ch->ch_mval &= ~(D_RTS(ch));
- }
-
- if (arg & TIOCM_DTR) {
- ch->ch_mforce |= D_DTR(ch);
- ch->ch_mval &= ~(D_DTR(ch));
- }
-
- break;
-
- case TIOCMSET:
- ch->ch_mforce = D_DTR(ch) | D_RTS(ch);
-
- if (arg & TIOCM_RTS)
- ch->ch_mval |= D_RTS(ch);
- else
- ch->ch_mval &= ~(D_RTS(ch));
-
- if (arg & TIOCM_DTR)
- ch->ch_mval |= (D_DTR(ch));
- else
- ch->ch_mval &= ~(D_DTR(ch));
-
- break;
-
- default:
- return -EINVAL;
- }
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- dgap_param(ch, bd, un->un_type);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-}
-
-/*
- * dgap_tty_digigeta()
- *
- * Ioctl to get the information for ditty.
- *
- *
- *
- */
-static int dgap_tty_digigeta(struct channel_t *ch,
- struct digi_t __user *retinfo)
-{
- struct digi_t tmp;
- ulong lock_flags;
-
- if (!retinfo)
- return -EFAULT;
-
- memset(&tmp, 0, sizeof(tmp));
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
- memcpy(&tmp, &ch->ch_digi, sizeof(tmp));
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return -EFAULT;
-
- return 0;
-}
-
-/*
- * dgap_tty_digiseta()
- *
- * Ioctl to set the information for ditty.
- *
- *
- *
- */
-static int dgap_tty_digiseta(struct channel_t *ch, struct board_t *bd,
- struct un_t *un, struct digi_t __user *new_info)
-{
- struct digi_t new_digi;
- ulong lock_flags = 0;
- unsigned long lock_flags2;
-
- if (copy_from_user(&new_digi, new_info, sizeof(struct digi_t)))
- return -EFAULT;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- memcpy(&ch->ch_digi, &new_digi, sizeof(struct digi_t));
-
- if (ch->ch_digi.digi_maxcps < 1)
- ch->ch_digi.digi_maxcps = 1;
-
- if (ch->ch_digi.digi_maxcps > 10000)
- ch->ch_digi.digi_maxcps = 10000;
-
- if (ch->ch_digi.digi_bufsize < 10)
- ch->ch_digi.digi_bufsize = 10;
-
- if (ch->ch_digi.digi_maxchar < 1)
- ch->ch_digi.digi_maxchar = 1;
-
- if (ch->ch_digi.digi_maxchar > ch->ch_digi.digi_bufsize)
- ch->ch_digi.digi_maxchar = ch->ch_digi.digi_bufsize;
-
- if (ch->ch_digi.digi_onlen > DIGI_PLEN)
- ch->ch_digi.digi_onlen = DIGI_PLEN;
-
- if (ch->ch_digi.digi_offlen > DIGI_PLEN)
- ch->ch_digi.digi_offlen = DIGI_PLEN;
-
- dgap_param(ch, bd, un->un_type);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-}
-
-/*
- * dgap_tty_digigetedelay()
- *
- * Ioctl to get the current edelay setting.
- *
- *
- *
- */
-static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo)
-{
- struct channel_t *ch;
- struct un_t *un;
- int tmp;
- ulong lock_flags;
-
- if (!retinfo)
- return -EFAULT;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -EFAULT;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return -EFAULT;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return -EFAULT;
-
- memset(&tmp, 0, sizeof(tmp));
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
- tmp = readw(&ch->ch_bs->edelay);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return -EFAULT;
-
- return 0;
-}
-
-/*
- * dgap_tty_digisetedelay()
- *
- * Ioctl to set the EDELAY setting
- *
- */
-static int dgap_tty_digisetedelay(struct channel_t *ch, struct board_t *bd,
- struct un_t *un, int __user *new_info)
-{
- int new_digi;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (copy_from_user(&new_digi, new_info, sizeof(int)))
- return -EFAULT;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- writew((u16)new_digi, &ch->ch_bs->edelay);
-
- dgap_param(ch, bd, un->un_type);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-}
-
-/*
- * dgap_tty_digigetcustombaud()
- *
- * Ioctl to get the current custom baud rate setting.
- */
-static int dgap_tty_digigetcustombaud(struct channel_t *ch, struct un_t *un,
- int __user *retinfo)
-{
- int tmp;
- ulong lock_flags;
-
- if (!retinfo)
- return -EFAULT;
-
- memset(&tmp, 0, sizeof(tmp));
-
- spin_lock_irqsave(&ch->ch_lock, lock_flags);
- tmp = dgap_get_custom_baud(ch);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return -EFAULT;
-
- return 0;
-}
-
-/*
- * dgap_tty_digisetcustombaud()
- *
- * Ioctl to set the custom baud rate setting
- */
-static int dgap_tty_digisetcustombaud(struct channel_t *ch, struct board_t *bd,
- struct un_t *un, int __user *new_info)
-{
- uint new_rate;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (copy_from_user(&new_rate, new_info, sizeof(unsigned int)))
- return -EFAULT;
-
- if (bd->bd_flags & BD_FEP5PLUS) {
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- ch->ch_custom_speed = new_rate;
-
- dgap_param(ch, bd, un->un_type);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- }
-
- return 0;
-}
-
-/*
- * dgap_set_termios()
- */
-static void dgap_tty_set_termios(struct tty_struct *tty,
- struct ktermios *old_termios)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- unsigned long lock_flags;
- unsigned long lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- 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];
-
- dgap_carrier(ch);
- dgap_param(ch, bd, un->un_type);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-static void dgap_tty_throttle(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- ch->ch_flags |= (CH_RXBLOCK);
-#if 1
- dgap_cmdw(ch, RPAUSE, 0, 0);
-#endif
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-static void dgap_tty_unthrottle(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- ch->ch_flags &= ~(CH_RXBLOCK);
-
-#if 1
- dgap_cmdw(ch, RRESUME, 0, 0);
-#endif
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-static struct board_t *find_board_by_major(unsigned int major)
-{
- unsigned int i;
-
- for (i = 0; i < MAXBOARDS; i++) {
- struct board_t *brd = dgap_board[i];
-
- if (!brd)
- return NULL;
- if (major == brd->serial_driver->major ||
- major == brd->print_driver->major)
- return brd;
- }
-
- return NULL;
-}
-
-/************************************************************************
- *
- * TTY Entry points and helper functions
- *
- ************************************************************************/
-
-/*
- * dgap_tty_open()
- *
- */
-static int dgap_tty_open(struct tty_struct *tty, struct file *file)
-{
- 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));
-
- brd = find_board_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->serial_driver->major) {
- un = &brd->channels[minor]->ch_tun;
- un->un_type = DGAP_SERIAL;
- } else if (major == brd->print_driver->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 board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- 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);
-}
-
-static void dgap_tty_start(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- dgap_cmdw(ch, RESUMETX, 0, 0);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-static void dgap_tty_stop(struct tty_struct *tty)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- 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_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)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- ulong lock_flags;
- ulong lock_flags2;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- /* TODO: Do something here */
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-/*****************************************************************************
- *
- * The IOCTL function and all of its helpers
- *
- *****************************************************************************/
-
-/*
- * dgap_tty_ioctl()
- *
- * The usual assortment of ioctl's
- */
-static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
- unsigned long arg)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- int rc;
- u16 head;
- ulong lock_flags = 0;
- ulong lock_flags2 = 0;
- void __user *uarg = (void __user *)arg;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -ENODEV;
-
- un = tty->driver_data;
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return -ENODEV;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return -ENODEV;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return -ENODEV;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- if (un->un_open_count <= 0) {
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return -EIO;
- }
-
- switch (cmd) {
- /* Here are all the standard ioctl's that we MUST implement */
- case TCSBRK:
- /*
- * TCSBRK is SVID version: non-zero arg --> no break
- * this behaviour is exploited by tcdrain().
- *
- * According to POSIX.1 spec (7.2.2.1.2) breaks should be
- * between 0.25 and 0.5 seconds so we'll ask for something
- * in the middle: 0.375 seconds.
- */
- rc = tty_check_change(tty);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- if (rc)
- return rc;
-
- rc = dgap_wait_for_drain(tty);
-
- if (rc)
- return -EINTR;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- if (((cmd == TCSBRK) && (!arg)) || (cmd == TCSBRKP))
- dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-
- case TCSBRKP:
- /* support for POSIX tcsendbreak()
-
- * According to POSIX.1 spec (7.2.2.1.2) breaks should be
- * between 0.25 and 0.5 seconds so we'll ask for something
- * in the middle: 0.375 seconds.
- */
- rc = tty_check_change(tty);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- if (rc)
- return rc;
-
- rc = dgap_wait_for_drain(tty);
- if (rc)
- return -EINTR;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-
- case TIOCSBRK:
- /*
- * FEP5 doesn't support turning on a break unconditionally.
- * The FEP5 device will stop sending a break automatically
- * after the specified time value that was sent when turning on
- * the break.
- */
- rc = tty_check_change(tty);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- if (rc)
- return rc;
-
- rc = dgap_wait_for_drain(tty);
- if (rc)
- return -EINTR;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
- dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0);
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-
- case TIOCCBRK:
- /*
- * FEP5 doesn't support turning off a break unconditionally.
- * The FEP5 device will stop sending a break automatically
- * after the specified time value that was sent when turning on
- * the break.
- */
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return 0;
-
- case TIOCGSOFTCAR:
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return put_user(C_CLOCAL(tty) ? 1 : 0,
- (unsigned long __user *)arg);
-
- case TIOCSSOFTCAR:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- rc = get_user(arg, (unsigned long __user *)arg);
- if (rc)
- return rc;
-
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
- tty->termios.c_cflag = ((tty->termios.c_cflag & ~CLOCAL) |
- (arg ? CLOCAL : 0));
- dgap_param(ch, bd, un->un_type);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return 0;
-
- case TIOCMGET:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return dgap_get_modem_info(ch, uarg);
-
- case TIOCMBIS:
- case TIOCMBIC:
- case TIOCMSET:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return dgap_set_modem_info(ch, bd, un, cmd, uarg);
-
- /*
- * Here are any additional ioctl's that we want to implement
- */
-
- case TCFLSH:
- /*
- * The linux tty driver doesn't have a flush
- * input routine for the driver, assuming all backed
- * up data is in the line disc. buffers. However,
- * we all know that's not the case. Here, we
- * act on the ioctl, but then lie and say we didn't
- * so the line discipline will process the flush
- * also.
- */
- rc = tty_check_change(tty);
- if (rc) {
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return rc;
- }
-
- if ((arg == TCIFLUSH) || (arg == TCIOFLUSH)) {
- if (!(un->un_type == DGAP_PRINT)) {
- head = readw(&ch->ch_bs->rx_head);
- writew(head, &ch->ch_bs->rx_tail);
- writeb(0, &ch->ch_bs->orun);
- }
- }
-
- if ((arg != TCOFLUSH) && (arg != TCIOFLUSH)) {
- /* pretend we didn't recognize this IOCTL */
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return -ENOIOCTLCMD;
- }
-
- 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);
- }
- if (waitqueue_active(&tty->write_wait))
- wake_up_interruptible(&tty->write_wait);
-
- /* Can't hold any locks when calling tty_wakeup! */
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- tty_wakeup(tty);
-
- /* pretend we didn't recognize this IOCTL */
- return -ENOIOCTLCMD;
-
- case TCSETSF:
- case TCSETSW:
- /*
- * The linux tty driver doesn't have a flush
- * input routine for the driver, assuming all backed
- * up data is in the line disc. buffers. However,
- * we all know that's not the case. Here, we
- * act on the ioctl, but then lie and say we didn't
- * so the line discipline will process the flush
- * also.
- */
- if (cmd == TCSETSF) {
- /* flush rx */
- ch->ch_flags &= ~CH_STOP;
- head = readw(&ch->ch_bs->rx_head);
- writew(head, &ch->ch_bs->rx_tail);
- }
-
- /* now wait for all the output to drain */
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- rc = dgap_wait_for_drain(tty);
- if (rc)
- return -EINTR;
-
- /* pretend we didn't recognize this */
- return -ENOIOCTLCMD;
-
- case TCSETAW:
-
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- rc = dgap_wait_for_drain(tty);
- if (rc)
- return -EINTR;
-
- /* pretend we didn't recognize this */
- return -ENOIOCTLCMD;
-
- case TCXONC:
- /*
- * The Linux Line Discipline (LD) would do this for us if we
- * let it, but we have the special firmware options to do this
- * the "right way" regardless of hardware or software flow
- * control so we'll do it outselves instead of letting the LD
- * do it.
- */
- rc = tty_check_change(tty);
- if (rc) {
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return rc;
- }
-
- switch (arg) {
- case TCOON:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- dgap_tty_start(tty);
- return 0;
- case TCOOFF:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- dgap_tty_stop(tty);
- return 0;
- case TCION:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- /* Make the ld do it */
- return -ENOIOCTLCMD;
- case TCIOFF:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- /* Make the ld do it */
- return -ENOIOCTLCMD;
- default:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return -EINVAL;
- }
-
- case DIGI_GETA:
- /* get information for ditty */
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return dgap_tty_digigeta(ch, uarg);
-
- case DIGI_SETAW:
- case DIGI_SETAF:
-
- /* set information for ditty */
- if (cmd == (DIGI_SETAW)) {
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- rc = dgap_wait_for_drain(tty);
- if (rc)
- return -EINTR;
- spin_lock_irqsave(&bd->bd_lock, lock_flags);
- spin_lock_irqsave(&ch->ch_lock, lock_flags2);
- } else
- tty_ldisc_flush(tty);
- /* fall thru */
-
- case DIGI_SETA:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return dgap_tty_digiseta(ch, bd, un, uarg);
-
- case DIGI_GEDELAY:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return dgap_tty_digigetedelay(tty, uarg);
-
- case DIGI_SEDELAY:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return dgap_tty_digisetedelay(ch, bd, un, uarg);
-
- case DIGI_GETCUSTOMBAUD:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return dgap_tty_digigetcustombaud(ch, un, uarg);
-
- case DIGI_SETCUSTOMBAUD:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return dgap_tty_digisetcustombaud(ch, bd, un, uarg);
-
- case DIGI_RESET_PORT:
- dgap_firmware_reset_port(ch);
- dgap_param(ch, bd, un->un_type);
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
- return 0;
-
- default:
- spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
- spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
- return -ENOIOCTLCMD;
- }
-}
-
-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
-};
-
-/************************************************************************
- *
- * TTY Initialization/Cleanup Functions
- *
- ************************************************************************/
-
-/*
- * dgap_tty_register()
- *
- * Init the tty subsystem for this board.
- */
-static int dgap_tty_register(struct board_t *brd)
-{
- int rc;
-
- brd->serial_driver = tty_alloc_driver(MAXPORTS,
- TTY_DRIVER_REAL_RAW |
- TTY_DRIVER_DYNAMIC_DEV |
- TTY_DRIVER_HARDWARE_BREAK);
- if (IS_ERR(brd->serial_driver))
- return PTR_ERR(brd->serial_driver);
-
- 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;
-
- /*
- * 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);
-
- /*
- * 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,
- TTY_DRIVER_REAL_RAW |
- TTY_DRIVER_DYNAMIC_DEV |
- TTY_DRIVER_HARDWARE_BREAK);
- if (IS_ERR(brd->print_driver)) {
- rc = PTR_ERR(brd->print_driver);
- goto free_serial_drv;
- }
-
- 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;
-
- /*
- * 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);
-
- /* Register tty devices */
- rc = tty_register_driver(brd->serial_driver);
- if (rc < 0)
- goto free_print_drv;
-
- /* Register Transparent Print devices */
- rc = tty_register_driver(brd->print_driver);
- if (rc < 0)
- goto unregister_serial_drv;
-
- return 0;
-
-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);
-
- return rc;
-}
-
-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);
-}
-
-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);
-}
-
-static struct board_t *dgap_verify_board(struct device *p)
-{
- struct board_t *bd;
-
- if (!p)
- return NULL;
-
- bd = dev_get_drvdata(p);
- if (!bd || bd->magic != DGAP_BOARD_MAGIC || bd->state != BOARD_READY)
- return NULL;
-
- return bd;
-}
-
-static ssize_t dgap_ports_state_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d %s\n", bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_open_count ? "Open" : "Closed");
- }
- return count;
-}
-static DEVICE_ATTR(ports_state, S_IRUSR, dgap_ports_state_show, NULL);
-
-static ssize_t dgap_ports_baud_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %d\n",
- bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_baud_info);
- }
- return count;
-}
-static DEVICE_ATTR(ports_baud, S_IRUSR, dgap_ports_baud_show, NULL);
-
-static ssize_t dgap_ports_msignals_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++) {
- if (bd->channels[i]->ch_open_count)
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d %s %s %s %s %s %s\n",
- bd->channels[i]->ch_portnum,
- (bd->channels[i]->ch_mostat &
- UART_MCR_RTS) ? "RTS" : "",
- (bd->channels[i]->ch_mistat &
- UART_MSR_CTS) ? "CTS" : "",
- (bd->channels[i]->ch_mostat &
- UART_MCR_DTR) ? "DTR" : "",
- (bd->channels[i]->ch_mistat &
- UART_MSR_DSR) ? "DSR" : "",
- (bd->channels[i]->ch_mistat &
- UART_MSR_DCD) ? "DCD" : "",
- (bd->channels[i]->ch_mistat &
- UART_MSR_RI) ? "RI" : "");
- else
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d\n", bd->channels[i]->ch_portnum);
- }
- return count;
-}
-static DEVICE_ATTR(ports_msignals, S_IRUSR, dgap_ports_msignals_show, NULL);
-
-static ssize_t dgap_ports_iflag_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++)
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_c_iflag);
- return count;
-}
-static DEVICE_ATTR(ports_iflag, S_IRUSR, dgap_ports_iflag_show, NULL);
-
-static ssize_t dgap_ports_cflag_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++)
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_c_cflag);
- return count;
-}
-static DEVICE_ATTR(ports_cflag, S_IRUSR, dgap_ports_cflag_show, NULL);
-
-static ssize_t dgap_ports_oflag_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++)
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_c_oflag);
- return count;
-}
-static DEVICE_ATTR(ports_oflag, S_IRUSR, dgap_ports_oflag_show, NULL);
-
-static ssize_t dgap_ports_lflag_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++)
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_c_lflag);
- return count;
-}
-static DEVICE_ATTR(ports_lflag, S_IRUSR, dgap_ports_lflag_show, NULL);
-
-static ssize_t dgap_ports_digi_flag_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++)
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_digi.digi_flags);
- return count;
-}
-static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgap_ports_digi_flag_show, NULL);
-
-static ssize_t dgap_ports_rxcount_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++)
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
- bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_rxcount);
- return count;
-}
-static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgap_ports_rxcount_show, NULL);
-
-static ssize_t dgap_ports_txcount_show(struct device *p,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- int count = 0;
- unsigned int i;
-
- bd = dgap_verify_board(p);
- if (!bd)
- return 0;
-
- for (i = 0; i < bd->nasync; i++)
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
- bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_txcount);
- return count;
-}
-static DEVICE_ATTR(ports_txcount, S_IRUSR, dgap_ports_txcount_show, NULL);
-
-static ssize_t dgap_tty_state_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ?
- "Open" : "Closed");
-}
-static DEVICE_ATTR(state, S_IRUSR, dgap_tty_state_show, NULL);
-
-static ssize_t dgap_tty_baud_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_baud_info);
-}
-static DEVICE_ATTR(baud, S_IRUSR, dgap_tty_baud_show, NULL);
-
-static ssize_t dgap_tty_msignals_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- if (ch->ch_open_count) {
- return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
- (ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
- (ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
- (ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
- (ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
- (ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
- (ch->ch_mistat & UART_MSR_RI) ? "RI" : "");
- }
- return 0;
-}
-static DEVICE_ATTR(msignals, S_IRUSR, dgap_tty_msignals_show, NULL);
-
-static ssize_t dgap_tty_iflag_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
-}
-static DEVICE_ATTR(iflag, S_IRUSR, dgap_tty_iflag_show, NULL);
-
-static ssize_t dgap_tty_cflag_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
-}
-static DEVICE_ATTR(cflag, S_IRUSR, dgap_tty_cflag_show, NULL);
-
-static ssize_t dgap_tty_oflag_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
-}
-static DEVICE_ATTR(oflag, S_IRUSR, dgap_tty_oflag_show, NULL);
-
-static ssize_t dgap_tty_lflag_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
-}
-static DEVICE_ATTR(lflag, S_IRUSR, dgap_tty_lflag_show, NULL);
-
-static ssize_t dgap_tty_digi_flag_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
-}
-static DEVICE_ATTR(digi_flag, S_IRUSR, dgap_tty_digi_flag_show, NULL);
-
-static ssize_t dgap_tty_rxcount_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
-}
-static DEVICE_ATTR(rxcount, S_IRUSR, dgap_tty_rxcount_show, NULL);
-
-static ssize_t dgap_tty_txcount_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
-}
-static DEVICE_ATTR(txcount, S_IRUSR, dgap_tty_txcount_show, NULL);
-
-static ssize_t dgap_tty_name_show(struct device *d,
- struct device_attribute *attr,
- char *buf)
-{
- struct board_t *bd;
- struct channel_t *ch;
- struct un_t *un;
- int cn;
- int bn;
- struct cnode *cptr;
- int found = FALSE;
- int ncount = 0;
- int starto = 0;
- int i;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGAP_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGAP_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- bn = bd->boardnum;
- cn = ch->ch_portnum;
-
- for (cptr = bd->bd_config; cptr; cptr = cptr->next) {
- if ((cptr->type == BNODE) &&
- ((cptr->u.board.type == APORT2_920P) ||
- (cptr->u.board.type == APORT4_920P) ||
- (cptr->u.board.type == APORT8_920P) ||
- (cptr->u.board.type == PAPORT4) ||
- (cptr->u.board.type == PAPORT8))) {
- found = TRUE;
- if (cptr->u.board.v_start)
- starto = cptr->u.board.start;
- else
- starto = 1;
- }
-
- if (cptr->type == TNODE && found == TRUE) {
- char *ptr1;
-
- if (strstr(cptr->u.ttyname, "tty")) {
- ptr1 = cptr->u.ttyname;
- ptr1 += 3;
- } else
- ptr1 = cptr->u.ttyname;
-
- for (i = 0; i < dgap_config_get_num_prts(bd); i++) {
- if (cn != i)
- continue;
-
- return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
- (un->un_type == DGAP_PRINT) ?
- "pr" : "tty",
- ptr1, i + starto);
- }
- }
-
- if (cptr->type == CNODE) {
- for (i = 0; i < cptr->u.conc.nport; i++) {
- if (cn != (i + ncount))
- continue;
-
- return snprintf(buf, PAGE_SIZE, "%s%s%02ld\n",
- (un->un_type == DGAP_PRINT) ?
- "pr" : "tty",
- cptr->u.conc.id,
- i + (cptr->u.conc.v_start ?
- cptr->u.conc.start : 1));
- }
-
- ncount += cptr->u.conc.nport;
- }
-
- if (cptr->type == MNODE) {
- for (i = 0; i < cptr->u.module.nport; i++) {
- if (cn != (i + ncount))
- continue;
-
- return snprintf(buf, PAGE_SIZE, "%s%s%02ld\n",
- (un->un_type == DGAP_PRINT) ?
- "pr" : "tty",
- cptr->u.module.id,
- i + (cptr->u.module.v_start ?
- cptr->u.module.start : 1));
- }
-
- ncount += cptr->u.module.nport;
- }
- }
-
- return snprintf(buf, PAGE_SIZE, "%s_dgap_%d_%d\n",
- (un->un_type == DGAP_PRINT) ? "pr" : "tty", bn, cn);
-}
-static DEVICE_ATTR(custom_name, S_IRUSR, dgap_tty_name_show, NULL);
-
-static struct attribute *dgap_sysfs_tty_entries[] = {
- &dev_attr_state.attr,
- &dev_attr_baud.attr,
- &dev_attr_msignals.attr,
- &dev_attr_iflag.attr,
- &dev_attr_cflag.attr,
- &dev_attr_oflag.attr,
- &dev_attr_lflag.attr,
- &dev_attr_digi_flag.attr,
- &dev_attr_rxcount.attr,
- &dev_attr_txcount.attr,
- &dev_attr_custom_name.attr,
- 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);
-}
-
-/*
- * 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);
-}
-
-
-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)
-{
- 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);
-}
-
-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)
-{
- int ret;
-
- ret = sysfs_create_group(&c->kobj, &dgap_tty_attribute_group);
- if (ret)
- return;
-
- dev_set_drvdata(c, un);
-}
-
-static void dgap_remove_tty_sysfs(struct device *c)
-{
- sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
-}
-
-/*
- * 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;
-}
-
-/*
- * 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;
-
- 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);
-
- 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);
-}
-
-static int dgap_request_irq(struct board_t *brd)
-{
- int rc;
-
- if (!brd || brd->magic != DGAP_BOARD_MAGIC)
- return -ENODEV;
-
- /*
- * Set up our interrupt handler if we are set to do interrupts.
- */
- if (dgap_config_get_useintr(brd) && brd->irq) {
- rc = request_irq(brd->irq, dgap_intr, IRQF_SHARED, "DGAP", brd);
-
- if (!rc)
- brd->intr_used = 1;
- }
- return 0;
-}
-
-static void dgap_free_irq(struct board_t *brd)
-{
- if (brd->intr_used && brd->irq)
- free_irq(brd->irq, brd);
-}
-
-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;
-
- dgap_get_vpd(brd);
- dgap_do_reset_board(brd);
-
- 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;
- }
-
- dgap_config_buf = kzalloc(fw->size + 1, GFP_KERNEL);
- if (!dgap_config_buf) {
- release_firmware(fw);
- return -ENOMEM;
- }
-
- memcpy(dgap_config_buf, fw->data, fw->size);
- release_firmware(fw);
-
- /*
- * preserve dgap_config_buf
- * as dgap_parsefile would
- * otherwise alter it.
- */
- tmp_ptr = dgap_config_buf;
-
- if (dgap_parsefile(&tmp_ptr) != 0) {
- kfree(dgap_config_buf);
- return -EINVAL;
- }
- kfree(dgap_config_buf);
- }
-
- /*
- * 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);
-
- /*
- * 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;
- }
-
- 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);
-
- /* Wait for BIOS to test board... */
- ret = dgap_test_bios(brd);
- if (ret)
- return ret;
- }
-
- 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);
-
- /* 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 0;
-}
-
-/*
- * 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;
-
- /*
- * 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");
- }
-
- 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;
-}
-
-/*
- * dgap_tty_free()
- *
- * Free the channles which are allocated in dgap_tty_init().
- */
-static void dgap_tty_free(struct board_t *brd)
-{
- int i;
-
- for (i = 0; i < brd->nasync; i++)
- kfree(brd->channels[i]);
-}
-
-static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- 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;
-
- 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;
-}
-
-/*
- * dgap_cleanup_board()
- *
- * Free all the memory associated with a board
- */
-static void dgap_cleanup_board(struct board_t *brd)
-{
- unsigned int i;
-
- if (!brd || brd->magic != DGAP_BOARD_MAGIC)
- return;
-
- dgap_free_irq(brd);
-
- tasklet_kill(&brd->helper_tasklet);
-
- dgap_unmap(brd);
-
- /* Free all allocated channels structs */
- for (i = 0; i < MAXPORTS ; i++)
- kfree(brd->channels[i]);
-
- kfree(brd->flipbuf);
- kfree(brd->flipflagbuf);
-
- dgap_board[brd->boardnum] = NULL;
-
- kfree(brd);
-}
-
-static void dgap_stop(bool removesys, struct pci_driver *drv)
-{
- unsigned long lock_flags;
-
- spin_lock_irqsave(&dgap_poll_lock, lock_flags);
- dgap_poll_stop = 1;
- spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
-
- del_timer_sync(&dgap_poll_timer);
- if (removesys)
- dgap_remove_driver_sysfiles(drv);
-
- device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
- class_destroy(dgap_class);
- unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
-}
-
-static void dgap_remove_one(struct pci_dev *dev)
-{
- unsigned int i;
- struct pci_driver *drv = to_pci_driver(dev->dev.driver);
-
- dgap_stop(true, drv);
- 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]);
- }
-
- dgap_cleanup_nodes();
-}
-
-static struct pci_driver dgap_driver = {
- .name = "dgap",
- .probe = dgap_init_one,
- .id_table = dgap_pci_tbl,
- .remove = dgap_remove_one,
-};
-
-/*
- * Start of driver.
- */
-static int dgap_start(void)
-{
- int rc;
- unsigned long flags;
- struct device *device;
-
- 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;
- }
-
- 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);
- setup_timer(&dgap_poll_timer, dgap_poll_handler, 0);
- 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;
-}
-
-/************************************************************************
- *
- * Driver load/unload functions
- *
- ************************************************************************/
-
-/*
- * init_module()
- *
- * Module load. This is where it all starts.
- */
-static int dgap_init_module(void)
-{
- 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) {
- dgap_stop(false, NULL);
- return rc;
- }
-
- 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);
- return rc;
-}
-
-/*
- * dgap_cleanup_module()
- *
- * Module unload. This is where it all ends.
- */
-static void dgap_cleanup_module(void)
-{
- 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");
+++ /dev/null
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- *
- *************************************************************************
- *
- * Driver includes
- *
- *************************************************************************/
-
-#ifndef __DGAP_DRIVER_H
-#define __DGAP_DRIVER_H
-
-#include <linux/types.h> /* To pick up the varions Linux types */
-#include <linux/tty.h> /* To pick up the various tty structs/defines */
-#include <linux/interrupt.h> /* For irqreturn_t type */
-
-#ifndef TRUE
-# define TRUE 1
-#endif
-
-#ifndef FALSE
-# define FALSE 0
-#endif
-
-#if !defined(TTY_FLIPBUF_SIZE)
-# define TTY_FLIPBUF_SIZE 512
-#endif
-
-/*************************************************************************
- *
- * Driver defines
- *
- *************************************************************************/
-
-/*
- * Driver identification
- */
-#define DG_NAME "dgap-1.3-16"
-#define DG_PART "40002347_C"
-#define DRVSTR "dgap"
-
-/*
- * defines from dgap_pci.h
- */
-#define PCIMAX 32 /* maximum number of PCI boards */
-
-#define DIGI_VID 0x114F
-
-#define PCI_DEV_EPC_DID 0x0002
-#define PCI_DEV_XEM_DID 0x0004
-#define PCI_DEV_XR_DID 0x0005
-#define PCI_DEV_CX_DID 0x0006
-#define PCI_DEV_XRJ_DID 0x0009 /* PLX-based Xr adapter */
-#define PCI_DEV_XR_IBM_DID 0x0011 /* IBM 8-port Async Adapter */
-#define PCI_DEV_XR_BULL_DID 0x0013 /* BULL 8-port Async Adapter */
-#define PCI_DEV_XR_SAIP_DID 0x001c /* SAIP card - Xr adapter */
-#define PCI_DEV_XR_422_DID 0x0012 /* Xr-422 */
-#define PCI_DEV_920_2_DID 0x0034 /* XR-Plus 920 K, 2 port */
-#define PCI_DEV_920_4_DID 0x0026 /* XR-Plus 920 K, 4 port */
-#define PCI_DEV_920_8_DID 0x0027 /* XR-Plus 920 K, 8 port */
-#define PCI_DEV_EPCJ_DID 0x000a /* PLX 9060 chip for PCI */
-#define PCI_DEV_CX_IBM_DID 0x001b /* IBM 128-port Async Adapter */
-#define PCI_DEV_920_8_HP_DID 0x0058 /* HP XR-Plus 920 K, 8 port */
-#define PCI_DEV_XEM_HP_DID 0x0059 /* HP Xem PCI */
-
-#define PCI_DEV_XEM_NAME "AccelePort XEM"
-#define PCI_DEV_CX_NAME "AccelePort CX"
-#define PCI_DEV_XR_NAME "AccelePort Xr"
-#define PCI_DEV_XRJ_NAME "AccelePort Xr (PLX)"
-#define PCI_DEV_XR_SAIP_NAME "AccelePort Xr (SAIP)"
-#define PCI_DEV_920_2_NAME "AccelePort Xr920 2 port"
-#define PCI_DEV_920_4_NAME "AccelePort Xr920 4 port"
-#define PCI_DEV_920_8_NAME "AccelePort Xr920 8 port"
-#define PCI_DEV_XR_422_NAME "AccelePort Xr 422"
-#define PCI_DEV_EPCJ_NAME "AccelePort EPC (PLX)"
-#define PCI_DEV_XR_BULL_NAME "AccelePort Xr (BULL)"
-#define PCI_DEV_XR_IBM_NAME "AccelePort Xr (IBM)"
-#define PCI_DEV_CX_IBM_NAME "AccelePort CX (IBM)"
-#define PCI_DEV_920_8_HP_NAME "AccelePort Xr920 8 port (HP)"
-#define PCI_DEV_XEM_HP_NAME "AccelePort XEM (HP)"
-
-/*
- * 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
- */
-
-/* Potential location of PCI Bios from E0000 to FFFFF*/
-#define PCI_BIOS_SIZE 0x00020000
-
-/* Size of Memory and I/O for PCI (4MB) */
-#define PCI_RAM_SIZE 0x00400000
-
-/* Size of Memory (2MB) */
-#define PCI_MEM_SIZE 0x00200000
-
-/* Max PCI Window Size (2MB) */
-#define PCI_WIN_SIZE 0x00200000
-
-#define PCI_WIN_SHIFT 21 /* 21 bits max */
-
-/* Offset of I/0 in Memory (2MB) */
-#define PCI_IO_OFFSET 0x00200000
-
-/* Size of IO (2MB) */
-#define PCI_IO_SIZE_DGAP 0x00200000
-
-/* Number of boards we support at once. */
-#define MAXBOARDS 32
-#define MAXPORTS 224
-#define MAXTTYNAMELEN 200
-
-/* Our 3 magic numbers for our board, channel and unit structs */
-#define DGAP_BOARD_MAGIC 0x5c6df104
-#define DGAP_CHANNEL_MAGIC 0x6c6df104
-#define DGAP_UNIT_MAGIC 0x7c6df104
-
-/* Serial port types */
-#define DGAP_SERIAL 0
-#define DGAP_PRINT 1
-
-#define SERIAL_TYPE_NORMAL 1
-
-/* 4 extra for alignment play space */
-#define WRITEBUFLEN ((4096) + 4)
-#define MYFLIPLEN N_TTY_BUF_SIZE
-
-#define SBREAK_TIME 0x25
-#define U2BSIZE 0x400
-
-#define dgap_jiffies_from_ms(a) (((a) * HZ) / 1000)
-
-/*
- * Our major for the mgmt devices.
- *
- * We can use 22, because Digi was allocated 22 and 23 for the epca driver.
- * 22 has now become obsolete now that the "cu" devices have
- * been removed from 2.6.
- * Also, this *IS* the epca driver, just PCI only now.
- */
-#ifndef DIGI_DGAP_MAJOR
-# define DIGI_DGAP_MAJOR 22
-#endif
-
-/*
- * The parameters we use to define the periods of the moving averages.
- */
-#define MA_PERIOD (HZ / 10)
-#define SMA_DUR (1 * HZ)
-#define EMA_DUR (1 * HZ)
-#define SMA_NPERIODS (SMA_DUR / MA_PERIOD)
-#define EMA_NPERIODS (EMA_DUR / MA_PERIOD)
-
-/*
- * Define a local default termios struct. All ports will be created
- * with this termios initially. This is the same structure that is defined
- * as the default in tty_io.c with the same settings overridden as in serial.c
- *
- * In short, this should match the internal serial ports' defaults.
- */
-#define DEFAULT_IFLAGS (ICRNL | IXON)
-#define DEFAULT_OFLAGS (OPOST | ONLCR)
-#define DEFAULT_CFLAGS (B9600 | CS8 | CREAD | HUPCL | CLOCAL)
-#define DEFAULT_LFLAGS (ISIG | ICANON | ECHO | ECHOE | ECHOK | \
- ECHOCTL | ECHOKE | IEXTEN)
-
-#ifndef _POSIX_VDISABLE
-#define _POSIX_VDISABLE ('\0')
-#endif
-
-#define SNIFF_MAX 65536 /* Sniff buffer size (2^n) */
-#define SNIFF_MASK (SNIFF_MAX - 1) /* Sniff wrap mask */
-
-#define VPDSIZE (512)
-
-/************************************************************************
- * FEP memory offsets
- ************************************************************************/
-#define START 0x0004L /* Execution start address */
-
-#define CMDBUF 0x0d10L /* Command (cm_t) structure offset */
-#define CMDSTART 0x0400L /* Start of command buffer */
-#define CMDMAX 0x0800L /* End of command buffer */
-
-#define EVBUF 0x0d18L /* Event (ev_t) structure */
-#define EVSTART 0x0800L /* Start of event buffer */
-#define EVMAX 0x0c00L /* End of event buffer */
-#define FEP5_PLUS 0x0E40 /* ASCII '5' and ASCII 'A' is here */
-#define ECS_SEG 0x0E44 /* Segment of the extended */
- /* channel structure */
-#define LINE_SPEED 0x10 /* Offset into ECS_SEG for line */
- /* speed if the fep has extended */
- /* capabilities */
-
-/* BIOS MAGIC SPOTS */
-#define ERROR 0x0C14L /* BIOS error code */
-#define SEQUENCE 0x0C12L /* BIOS sequence indicator */
-#define POSTAREA 0x0C00L /* POST complete message area */
-
-/* FEP MAGIC SPOTS */
-#define FEPSTAT POSTAREA /* OS here when FEP comes up */
-#define NCHAN 0x0C02L /* number of ports FEP sees */
-#define PANIC 0x0C10L /* PANIC area for FEP */
-#define KMEMEM 0x0C30L /* Memory for KME use */
-#define CONFIG 0x0CD0L /* Concentrator configuration info */
-#define CONFIGSIZE 0x0030 /* configuration info size */
-#define DOWNREQ 0x0D00 /* Download request buffer pointer */
-
-#define CHANBUF 0x1000L /* Async channel (bs_t) structs */
-#define FEPOSSIZE 0x1FFF /* 8K FEPOS */
-
-#define XEMPORTS 0xC02 /*
- * Offset in board memory where FEP5 stores
- * how many ports it has detected.
- * NOTE: FEP5 reports 64 ports when the user
- * has the cable in EBI OUT instead of EBI IN.
- */
-
-#define FEPCLR 0x00
-#define FEPMEM 0x02
-#define FEPRST 0x04
-#define FEPINT 0x08
-#define FEPMASK 0x0e
-#define FEPWIN 0x80
-
-#define LOWMEM 0x0100
-#define HIGHMEM 0x7f00
-
-#define FEPTIMEOUT 200000
-
-#define ENABLE_INTR 0x0e04 /* Enable interrupts flag */
-#define FEPPOLL_MIN 1 /* minimum of 1 millisecond */
-#define FEPPOLL_MAX 20 /* maximum of 20 milliseconds */
-#define FEPPOLL 0x0c26 /* Fep event poll interval */
-
-#define IALTPIN 0x0080 /* Input flag to swap DSR <-> DCD */
-
-/************************************************************************
- * FEP supported functions
- ************************************************************************/
-#define SRLOW 0xe0 /* Set receive low water */
-#define SRHIGH 0xe1 /* Set receive high water */
-#define FLUSHTX 0xe2 /* Flush transmit buffer */
-#define PAUSETX 0xe3 /* Pause data transmission */
-#define RESUMETX 0xe4 /* Resume data transmission */
-#define SMINT 0xe5 /* Set Modem Interrupt */
-#define SAFLOWC 0xe6 /* Set Aux. flow control chars */
-#define SBREAK 0xe8 /* Send break */
-#define SMODEM 0xe9 /* Set 8530 modem control lines */
-#define SIFLAG 0xea /* Set UNIX iflags */
-#define SFLOWC 0xeb /* Set flow control characters */
-#define STLOW 0xec /* Set transmit low water mark */
-#define RPAUSE 0xee /* Pause receive */
-#define RRESUME 0xef /* Resume receive */
-#define CHRESET 0xf0 /* Reset Channel */
-#define BUFSETALL 0xf2 /* Set Tx & Rx buffer size avail*/
-#define SOFLAG 0xf3 /* Set UNIX oflags */
-#define SHFLOW 0xf4 /* Set hardware handshake */
-#define SCFLAG 0xf5 /* Set UNIX cflags */
-#define SVNEXT 0xf6 /* Set VNEXT character */
-#define SPINTFC 0xfc /* Reserved */
-#define SCOMMODE 0xfd /* Set RS232/422 mode */
-
-/************************************************************************
- * Modes for SCOMMODE
- ************************************************************************/
-#define MODE_232 0x00
-#define MODE_422 0x01
-
-/************************************************************************
- * Event flags.
- ************************************************************************/
-#define IFBREAK 0x01 /* Break received */
-#define IFTLW 0x02 /* Transmit low water */
-#define IFTEM 0x04 /* Transmitter empty */
-#define IFDATA 0x08 /* Receive data present */
-#define IFMODEM 0x20 /* Modem status change */
-
-/************************************************************************
- * Modem flags
- ************************************************************************/
-# define DM_RTS 0x02 /* Request to send */
-# define DM_CD 0x80 /* Carrier detect */
-# define DM_DSR 0x20 /* Data set ready */
-# define DM_CTS 0x10 /* Clear to send */
-# define DM_RI 0x40 /* Ring indicator */
-# define DM_DTR 0x01 /* Data terminal ready */
-
-/*
- * defines from dgap_conf.h
- */
-#define NULLNODE 0 /* header node, not used */
-#define BNODE 1 /* Board node */
-#define LNODE 2 /* Line node */
-#define CNODE 3 /* Concentrator node */
-#define MNODE 4 /* EBI Module node */
-#define TNODE 5 /* tty name prefix node */
-#define CUNODE 6 /* cu name prefix (non-SCO) */
-#define PNODE 7 /* trans. print prefix node */
-#define JNODE 8 /* maJor number node */
-#define ANODE 9 /* altpin */
-#define TSNODE 10 /* tty structure size */
-#define CSNODE 11 /* channel structure size */
-#define BSNODE 12 /* board structure size */
-#define USNODE 13 /* unit schedule structure size */
-#define FSNODE 14 /* f2200 structure size */
-#define VSNODE 15 /* size of VPIX structures */
-#define INTRNODE 16 /* enable interrupt */
-
-/* Enumeration of tokens */
-#define BEGIN 1
-#define END 2
-#define BOARD 10
-
-#define EPCFS 11 /* start of EPC family definitions */
-#define ICX 11
-#define MCX 13
-#define PCX 14
-#define IEPC 15
-#define EEPC 16
-#define MEPC 17
-#define IPCM 18
-#define EPCM 19
-#define MPCM 20
-#define PEPC 21
-#define PPCM 22
-#ifdef CP
-#define ICP 23
-#define ECP 24
-#define MCP 25
-#endif
-#define EPCFE 25 /* end of EPC family definitions */
-#define PC2E 26
-#define PC4E 27
-#define PC4E8K 28
-#define PC8E 29
-#define PC8E8K 30
-#define PC16E 31
-#define MC2E8K 34
-#define MC4E8K 35
-#define MC8E8K 36
-
-#define AVANFS 42 /* start of Avanstar family definitions */
-#define A8P 42
-#define A16P 43
-#define AVANFE 43 /* end of Avanstar family definitions */
-
-#define DA2000FS 44 /* start of AccelePort 2000 family definitions */
-#define DA22 44 /* AccelePort 2002 */
-#define DA24 45 /* AccelePort 2004 */
-#define DA28 46 /* AccelePort 2008 */
-#define DA216 47 /* AccelePort 2016 */
-#define DAR4 48 /* AccelePort RAS 4 port */
-#define DAR8 49 /* AccelePort RAS 8 port */
-#define DDR24 50 /* DataFire RAS 24 port */
-#define DDR30 51 /* DataFire RAS 30 port */
-#define DDR48 52 /* DataFire RAS 48 port */
-#define DDR60 53 /* DataFire RAS 60 port */
-#define DA2000FE 53 /* end of AccelePort 2000/RAS family definitions */
-
-#define PCXRFS 106 /* start of PCXR family definitions */
-#define APORT4 106
-#define APORT8 107
-#define PAPORT4 108
-#define PAPORT8 109
-#define APORT4_920I 110
-#define APORT8_920I 111
-#define APORT4_920P 112
-#define APORT8_920P 113
-#define APORT2_920P 114
-#define PCXRFE 117 /* end of PCXR family definitions */
-
-#define LINE 82
-#ifdef T1
-#define T1M 83
-#define E1M 84
-#endif
-#define CONC 64
-#define CX 65
-#define EPC 66
-#define MOD 67
-#define PORTS 68
-#define METHOD 69
-#define CUSTOM 70
-#define BASIC 71
-#define STATUS 72
-#define MODEM 73
-/* The following tokens can appear in multiple places */
-#define SPEED 74
-#define NPORTS 75
-#define ID 76
-#define CABLE 77
-#define CONNECT 78
-#define MEM 80
-#define DPSZ 81
-
-#define TTYN 90
-#define CU 91
-#define PRINT 92
-#define XPRINT 93
-#define CMAJOR 94
-#define ALTPIN 95
-#define STARTO 96
-#define USEINTR 97
-#define PCIINFO 98
-
-#define TTSIZ 100
-#define CHSIZ 101
-#define BSSIZ 102
-#define UNTSIZ 103
-#define F2SIZ 104
-#define VPSIZ 105
-
-#define TOTAL_BOARD 2
-#define CURRENT_BRD 4
-#define BOARD_TYPE 6
-#define IO_ADDRESS 8
-#define MEM_ADDRESS 10
-
-#define FIELDS_PER_PAGE 18
-
-#define TB_FIELD 1
-#define CB_FIELD 3
-#define BT_FIELD 5
-#define IO_FIELD 7
-#define ID_FIELD 8
-#define ME_FIELD 9
-#define TTY_FIELD 11
-#define CU_FIELD 13
-#define PR_FIELD 15
-#define MPR_FIELD 17
-
-#define MAX_FIELD 512
-
-#define INIT 0
-#define NITEMS 128
-#define MAX_ITEM 512
-
-#define DSCRINST 1
-#define DSCRNUM 3
-#define ALTPINQ 5
-#define SSAVE 7
-
-#define DSCR "32"
-#define ONETONINE "123456789"
-#define ALL "1234567890"
-
-/*
- * All the possible states the driver can be while being loaded.
- */
-enum {
- DRIVER_INITIALIZED = 0,
- DRIVER_READY
-};
-
-/*
- * All the possible states the board can be while booting up.
- */
-enum {
- BOARD_FAILED = 0,
- BOARD_READY
-};
-
-/*
- * All the possible states that a requested concentrator image can be in.
- */
-enum {
- NO_PENDING_CONCENTRATOR_REQUESTS = 0,
- NEED_CONCENTRATOR,
- REQUESTED_CONCENTRATOR
-};
-
-/*
- * Modem line constants are defined as macros because DSR and
- * DCD are swapable using the ditty altpin option.
- */
-#define D_CD(ch) ch->ch_cd /* Carrier detect */
-#define D_DSR(ch) ch->ch_dsr /* Data set ready */
-#define D_RTS(ch) DM_RTS /* Request to send */
-#define D_CTS(ch) DM_CTS /* Clear to send */
-#define D_RI(ch) DM_RI /* Ring indicator */
-#define D_DTR(ch) DM_DTR /* Data terminal ready */
-
-/*************************************************************************
- *
- * Structures and closely related defines.
- *
- *************************************************************************/
-
-/*
- * A structure to hold a statistics counter. We also
- * compute moving averages for this counter.
- */
-struct macounter {
- u32 cnt; /* Total count */
- ulong accum; /* Acuumulator per period */
- ulong sma; /* Simple moving average */
- ulong ema; /* Exponential moving average */
-};
-
-/************************************************************************
- * Device flag definitions for bd_flags.
- ************************************************************************/
-#define BD_FEP5PLUS 0x0001 /* Supports FEP5 Plus commands */
-#define BD_HAS_VPD 0x0002 /* Board has VPD info available */
-
-/*
- * Per-board information
- */
-struct board_t {
- int magic; /* Board Magic number. */
- int boardnum; /* Board number: 0-3 */
-
- int type; /* Type of board */
- char *name; /* Product Name */
- struct pci_dev *pdev; /* Pointer to the pci_dev struct */
- u16 vendor; /* PCI vendor ID */
- u16 device; /* PCI device ID */
- u16 subvendor; /* PCI subsystem vendor ID */
- u16 subdevice; /* PCI subsystem device ID */
- u8 rev; /* PCI revision ID */
- uint pci_bus; /* PCI bus value */
- uint pci_slot; /* PCI slot value */
- u16 maxports; /* MAX ports this board can handle */
- u8 vpd[VPDSIZE]; /* VPD of board, if found */
- u32 bd_flags; /* Board flags */
-
- spinlock_t bd_lock; /* Used to protect board */
-
- u32 state; /* State of card. */
- wait_queue_head_t state_wait; /* Place to sleep on for state change */
-
- struct tasklet_struct helper_tasklet; /* Poll helper tasklet */
-
- u32 wait_for_bios;
- u32 wait_for_fep;
-
- struct cnode *bd_config; /* Config of board */
-
- u16 nasync; /* Number of ports on card */
-
- ulong irq; /* Interrupt request number */
- ulong intr_count; /* Count of interrupts */
- u32 intr_used; /* Non-zero if using interrupts */
- u32 intr_running; /* Non-zero if FEP knows its doing */
- /* interrupts */
-
- ulong port; /* Start of base io port of the card */
- ulong port_end; /* End of base io port of the card */
- ulong membase; /* Start of base memory of the card */
- ulong membase_end; /* End of base memory of the card */
-
- u8 __iomem *re_map_port; /* Remapped io port of the card */
- u8 __iomem *re_map_membase;/* Remapped memory of the card */
-
- u8 inhibit_poller; /* Tells the poller to leave us alone */
-
- struct channel_t *channels[MAXPORTS]; /* array of pointers to our */
- /* channels. */
-
- struct tty_driver *serial_driver;
- struct tty_port *serial_ports;
- char serial_name[200];
- struct tty_driver *print_driver;
- struct tty_port *printer_ports;
- char print_name[200];
-
- struct bs_t __iomem *bd_bs; /* Base structure pointer */
-
- char *flipbuf; /* Our flip buffer, alloced if */
- /* board is found */
- char *flipflagbuf; /* Our flip flag buffer, alloced */
- /* if board is found */
-
- u16 dpatype; /* The board "type", as defined */
- /* by DPA */
- u16 dpastatus; /* The board "status", as defined */
- /* by DPA */
-
- u32 conc_dl_status; /* Status of any pending conc */
- /* download */
-};
-
-/************************************************************************
- * Unit flag definitions for un_flags.
- ************************************************************************/
-#define UN_ISOPEN 0x0001 /* Device is open */
-#define UN_CLOSING 0x0002 /* Line is being closed */
-#define UN_IMM 0x0004 /* Service immediately */
-#define UN_BUSY 0x0008 /* Some work this channel */
-#define UN_BREAKI 0x0010 /* Input break received */
-#define UN_PWAIT 0x0020 /* Printer waiting for terminal */
-#define UN_TIME 0x0040 /* Waiting on time */
-#define UN_EMPTY 0x0080 /* Waiting output queue empty */
-#define UN_LOW 0x0100 /* Waiting output low water mark*/
-#define UN_EXCL_OPEN 0x0200 /* Open for exclusive use */
-#define UN_WOPEN 0x0400 /* Device waiting for open */
-#define UN_WIOCTL 0x0800 /* Device waiting for open */
-#define UN_HANGUP 0x8000 /* Carrier lost */
-
-struct device;
-
-/************************************************************************
- * Structure for terminal or printer unit.
- ************************************************************************/
-struct un_t {
- int magic; /* Unit Magic Number. */
- struct channel_t *un_ch;
- u32 un_time;
- u32 un_type;
- int un_open_count; /* Counter of opens to port */
- struct tty_struct *un_tty;/* Pointer to unit tty structure */
- u32 un_flags; /* Unit flags */
- wait_queue_head_t un_flags_wait; /* Place to sleep to wait on unit */
- u32 un_dev; /* Minor device number */
- tcflag_t un_oflag; /* oflags being done on board */
- tcflag_t un_lflag; /* lflags being done on board */
- struct device *un_sysfs;
-};
-
-/************************************************************************
- * Device flag definitions for ch_flags.
- ************************************************************************/
-#define CH_PRON 0x0001 /* Printer on string */
-#define CH_OUT 0x0002 /* Dial-out device open */
-#define CH_STOP 0x0004 /* Output is stopped */
-#define CH_STOPI 0x0008 /* Input is stopped */
-#define CH_CD 0x0010 /* Carrier is present */
-#define CH_FCAR 0x0020 /* Carrier forced on */
-
-#define CH_RXBLOCK 0x0080 /* Enable rx blocked flag */
-#define CH_WLOW 0x0100 /* Term waiting low event */
-#define CH_WEMPTY 0x0200 /* Term waiting empty event */
-#define CH_RENABLE 0x0400 /* Buffer just emptied */
-#define CH_RACTIVE 0x0800 /* Process active in xxread() */
-#define CH_RWAIT 0x1000 /* Process waiting in xxread() */
-#define CH_BAUD0 0x2000 /* Used for checking B0 transitions */
-#define CH_HANGUP 0x8000 /* Hangup received */
-
-/*
- * Definitions for ch_sniff_flags
- */
-#define SNIFF_OPEN 0x1
-#define SNIFF_WAIT_DATA 0x2
-#define SNIFF_WAIT_SPACE 0x4
-
-/************************************************************************
- *** Definitions for Digi ditty(1) command.
- ************************************************************************/
-
-/************************************************************************
- * This module provides application access to special Digi
- * serial line enhancements which are not standard UNIX(tm) features.
- ************************************************************************/
-
-#if !defined(TIOCMODG)
-
-#define TIOCMODG (('d'<<8) | 250) /* get modem ctrl state */
-#define TIOCMODS (('d'<<8) | 251) /* set modem ctrl state */
-
-#ifndef TIOCM_LE
-#define TIOCM_LE 0x01 /* line enable */
-#define TIOCM_DTR 0x02 /* data terminal ready */
-#define TIOCM_RTS 0x04 /* request to send */
-#define TIOCM_ST 0x08 /* secondary transmit */
-#define TIOCM_SR 0x10 /* secondary receive */
-#define TIOCM_CTS 0x20 /* clear to send */
-#define TIOCM_CAR 0x40 /* carrier detect */
-#define TIOCM_RNG 0x80 /* ring indicator */
-#define TIOCM_DSR 0x100 /* data set ready */
-#define TIOCM_RI TIOCM_RNG /* ring (alternate) */
-#define TIOCM_CD TIOCM_CAR /* carrier detect (alt) */
-#endif
-
-#endif
-
-#if !defined(TIOCMSET)
-#define TIOCMSET (('d'<<8) | 252) /* set modem ctrl state */
-#define TIOCMGET (('d'<<8) | 253) /* set modem ctrl state */
-#endif
-
-#if !defined(TIOCMBIC)
-#define TIOCMBIC (('d'<<8) | 254) /* set modem ctrl state */
-#define TIOCMBIS (('d'<<8) | 255) /* set modem ctrl state */
-#endif
-
-#if !defined(TIOCSDTR)
-#define TIOCSDTR (('e'<<8) | 0) /* set DTR */
-#define TIOCCDTR (('e'<<8) | 1) /* clear DTR */
-#endif
-
-/************************************************************************
- * Ioctl command arguments for DIGI parameters.
- ************************************************************************/
-#define DIGI_GETA (('e'<<8) | 94) /* Read params */
-
-#define DIGI_SETA (('e'<<8) | 95) /* Set params */
-#define DIGI_SETAW (('e'<<8) | 96) /* Drain & set params */
-#define DIGI_SETAF (('e'<<8) | 97) /* Drain, flush & set params */
-
-#define DIGI_KME (('e'<<8) | 98) /* Read/Write Host */
- /* Adapter Memory */
-
-#define DIGI_GETFLOW (('e'<<8) | 99) /* Get startc/stopc flow */
- /* control characters */
-#define DIGI_SETFLOW (('e'<<8) | 100) /* Set startc/stopc flow */
- /* control characters */
-#define DIGI_GETAFLOW (('e'<<8) | 101) /* Get Aux. startc/stopc */
- /* flow control chars */
-#define DIGI_SETAFLOW (('e'<<8) | 102) /* Set Aux. startc/stopc */
- /* flow control chars */
-
-#define DIGI_GEDELAY (('d'<<8) | 246) /* Get edelay */
-#define DIGI_SEDELAY (('d'<<8) | 247) /* Set edelay */
-
-struct digiflow_t {
- unsigned char startc; /* flow cntl start char */
- unsigned char stopc; /* flow cntl stop char */
-};
-
-#ifdef FLOW_2200
-#define F2200_GETA (('e'<<8) | 104) /* Get 2x36 flow cntl flags */
-#define F2200_SETAW (('e'<<8) | 105) /* Set 2x36 flow cntl flags */
-#define F2200_MASK 0x03 /* 2200 flow cntl bit mask */
-#define FCNTL_2200 0x01 /* 2x36 terminal flow cntl */
-#define PCNTL_2200 0x02 /* 2x36 printer flow cntl */
-#define F2200_XON 0xf8
-#define P2200_XON 0xf9
-#define F2200_XOFF 0xfa
-#define P2200_XOFF 0xfb
-
-#define FXOFF_MASK 0x03 /* 2200 flow status mask */
-#define RCVD_FXOFF 0x01 /* 2x36 Terminal XOFF rcvd */
-#define RCVD_PXOFF 0x02 /* 2x36 Printer XOFF rcvd */
-#endif
-
-/************************************************************************
- * Values for digi_flags
- ************************************************************************/
-#define DIGI_IXON 0x0001 /* Handle IXON in the FEP */
-#define DIGI_FAST 0x0002 /* Fast baud rates */
-#define RTSPACE 0x0004 /* RTS input flow control */
-#define CTSPACE 0x0008 /* CTS output flow control */
-#define DSRPACE 0x0010 /* DSR output flow control */
-#define DCDPACE 0x0020 /* DCD output flow control */
-#define DTRPACE 0x0040 /* DTR input flow control */
-#define DIGI_COOK 0x0080 /* Cooked processing done in FEP */
-#define DIGI_FORCEDCD 0x0100 /* Force carrier */
-#define DIGI_ALTPIN 0x0200 /* Alternate RJ-45 pin config */
-#define DIGI_AIXON 0x0400 /* Aux flow control in fep */
-#define DIGI_PRINTER 0x0800 /* Hold port open for flow cntrl*/
-#define DIGI_PP_INPUT 0x1000 /* Change parallel port to input*/
-#define DIGI_DTR_TOGGLE 0x2000 /* Support DTR Toggle */
-#define DIGI_422 0x4000 /* for 422/232 selectable panel */
-#define DIGI_RTS_TOGGLE 0x8000 /* Support RTS Toggle */
-
-/************************************************************************
- * These options are not supported on the comxi.
- ************************************************************************/
-#define DIGI_COMXI (DIGI_FAST|DIGI_COOK|DSRPACE|DCDPACE|DTRPACE)
-
-#define DIGI_PLEN 28 /* String length */
-#define DIGI_TSIZ 10 /* Terminal string len */
-
-/************************************************************************
- * Structure used with ioctl commands for DIGI parameters.
- ************************************************************************/
-struct digi_t {
- unsigned short digi_flags; /* Flags (see above) */
- unsigned short digi_maxcps; /* Max printer CPS */
- unsigned short digi_maxchar; /* Max chars in print queue */
- unsigned short digi_bufsize; /* Buffer size */
- unsigned char digi_onlen; /* Length of ON string */
- unsigned char digi_offlen; /* Length of OFF string */
- char digi_onstr[DIGI_PLEN]; /* Printer on string */
- char digi_offstr[DIGI_PLEN]; /* Printer off string */
- char digi_term[DIGI_TSIZ]; /* terminal string */
-};
-
-/************************************************************************
- * KME definitions and structures.
- ************************************************************************/
-#define RW_IDLE 0 /* Operation complete */
-#define RW_READ 1 /* Read Concentrator Memory */
-#define RW_WRITE 2 /* Write Concentrator Memory */
-
-struct rw_t {
- unsigned char rw_req; /* Request type */
- unsigned char rw_board; /* Host Adapter board number */
- unsigned char rw_conc; /* Concentrator number */
- unsigned char rw_reserved; /* Reserved for expansion */
- unsigned long rw_addr; /* Address in concentrator */
- unsigned short rw_size; /* Read/write request length */
- unsigned char rw_data[128]; /* Data to read/write */
-};
-
-/************************************************************************
- * Structure to get driver status information
- ************************************************************************/
-struct digi_dinfo {
- unsigned long dinfo_nboards; /* # boards configured */
- char dinfo_reserved[12]; /* for future expansion */
- char dinfo_version[16]; /* driver version */
-};
-
-#define DIGI_GETDD (('d'<<8) | 248) /* get driver info */
-
-/************************************************************************
- * Structure used with ioctl commands for per-board information
- *
- * physsize and memsize differ when board has "windowed" memory
- ************************************************************************/
-struct digi_info {
- unsigned long info_bdnum; /* Board number (0 based) */
- unsigned long info_ioport; /* io port address */
- unsigned long info_physaddr; /* memory address */
- unsigned long info_physsize; /* Size of host mem window */
- unsigned long info_memsize; /* Amount of dual-port mem */
- /* on board */
- unsigned short info_bdtype; /* Board type */
- unsigned short info_nports; /* number of ports */
- char info_bdstate; /* board state */
- char info_reserved[7]; /* for future expansion */
-};
-
-#define DIGI_GETBD (('d'<<8) | 249) /* get board info */
-
-struct digi_stat {
- unsigned int info_chan; /* Channel number (0 based) */
- unsigned int info_brd; /* Board number (0 based) */
- unsigned long info_cflag; /* cflag for channel */
- unsigned long info_iflag; /* iflag for channel */
- unsigned long info_oflag; /* oflag for channel */
- unsigned long info_mstat; /* mstat for channel */
- unsigned long info_tx_data; /* tx_data for channel */
- unsigned long info_rx_data; /* rx_data for channel */
- unsigned long info_hflow; /* hflow for channel */
- unsigned long info_reserved[8]; /* for future expansion */
-};
-
-#define DIGI_GETSTAT (('d'<<8) | 244) /* get board info */
-/************************************************************************
- *
- * Structure used with ioctl commands for per-channel information
- *
- ************************************************************************/
-struct digi_ch {
- unsigned long info_bdnum; /* Board number (0 based) */
- unsigned long info_channel; /* Channel index number */
- unsigned long info_ch_cflag; /* Channel cflag */
- unsigned long info_ch_iflag; /* Channel iflag */
- unsigned long info_ch_oflag; /* Channel oflag */
- unsigned long info_chsize; /* Channel structure size */
- unsigned long info_sleep_stat; /* sleep status */
- dev_t info_dev; /* device number */
- unsigned char info_initstate; /* Channel init state */
- unsigned char info_running; /* Channel running state */
- long reserved[8]; /* reserved for future use */
-};
-
-/*
-* This structure is used with the DIGI_FEPCMD ioctl to
-* tell the driver which port to send the command for.
-*/
-struct digi_cmd {
- int cmd;
- int word;
- int ncmds;
- int chan; /* channel index (zero based) */
- int bdid; /* board index (zero based) */
-};
-
-/*
-* info_sleep_stat defines
-*/
-#define INFO_RUNWAIT 0x0001
-#define INFO_WOPEN 0x0002
-#define INFO_TTIOW 0x0004
-#define INFO_CH_RWAIT 0x0008
-#define INFO_CH_WEMPTY 0x0010
-#define INFO_CH_WLOW 0x0020
-#define INFO_XXBUF_BUSY 0x0040
-
-#define DIGI_GETCH (('d'<<8) | 245) /* get board info */
-
-/* Board type definitions */
-
-#define SUBTYPE 0007
-#define T_PCXI 0000
-#define T_PCXM 0001
-#define T_PCXE 0002
-#define T_PCXR 0003
-#define T_SP 0004
-#define T_SP_PLUS 0005
-# define T_HERC 0000
-# define T_HOU 0001
-# define T_LON 0002
-# define T_CHA 0003
-#define FAMILY 0070
-#define T_COMXI 0000
-#define T_PCXX 0010
-#define T_CX 0020
-#define T_EPC 0030
-#define T_PCLITE 0040
-#define T_SPXX 0050
-#define T_AVXX 0060
-#define T_DXB 0070
-#define T_A2K_4_8 0070
-#define BUSTYPE 0700
-#define T_ISABUS 0000
-#define T_MCBUS 0100
-#define T_EISABUS 0200
-#define T_PCIBUS 0400
-
-/* Board State Definitions */
-
-#define BD_RUNNING 0x0
-#define BD_REASON 0x7f
-#define BD_NOTFOUND 0x1
-#define BD_NOIOPORT 0x2
-#define BD_NOMEM 0x3
-#define BD_NOBIOS 0x4
-#define BD_NOFEP 0x5
-#define BD_FAILED 0x6
-#define BD_ALLOCATED 0x7
-#define BD_TRIBOOT 0x8
-#define BD_BADKME 0x80
-
-#define DIGI_LOOPBACK (('d'<<8) | 252) /* Enable/disable UART */
- /* internal loopback */
-#define DIGI_SPOLL (('d'<<8) | 254) /* change poller rate */
-
-#define DIGI_SETCUSTOMBAUD _IOW('e', 106, int) /* Set integer baud rate */
-#define DIGI_GETCUSTOMBAUD _IOR('e', 107, int) /* Get integer baud rate */
-#define DIGI_RESET_PORT (('e'<<8) | 93) /* Reset port */
-
-/************************************************************************
- * Channel information structure.
- ************************************************************************/
-struct channel_t {
- int magic; /* Channel Magic Number */
- struct bs_t __iomem *ch_bs; /* Base structure pointer */
- struct cm_t __iomem *ch_cm; /* Command queue pointer */
- struct board_t *ch_bd; /* Board structure pointer */
- u8 __iomem *ch_vaddr; /* FEP memory origin */
- u8 __iomem *ch_taddr; /* Write buffer origin */
- u8 __iomem *ch_raddr; /* Read buffer origin */
- struct digi_t ch_digi; /* Transparent Print structure */
- struct un_t ch_tun; /* Terminal unit info */
- struct un_t ch_pun; /* Printer unit info */
-
- spinlock_t ch_lock; /* provide for serialization */
- wait_queue_head_t ch_flags_wait;
-
- u32 pscan_state;
- u8 pscan_savechar;
-
- u32 ch_portnum; /* Port number, 0 offset. */
- u32 ch_open_count; /* open count */
- u32 ch_flags; /* Channel flags */
-
- u32 ch_cpstime; /* Time for CPS calculations */
-
- tcflag_t ch_c_iflag; /* channel iflags */
- tcflag_t ch_c_cflag; /* channel cflags */
- tcflag_t ch_c_oflag; /* channel oflags */
- tcflag_t ch_c_lflag; /* channel lflags */
-
- u16 ch_fepiflag; /* FEP tty iflags */
- u16 ch_fepcflag; /* FEP tty cflags */
- u16 ch_fepoflag; /* FEP tty oflags */
- u16 ch_wopen; /* Waiting for open process cnt */
- u16 ch_tstart; /* Transmit buffer start */
- u16 ch_tsize; /* Transmit buffer size */
- u16 ch_rstart; /* Receive buffer start */
- u16 ch_rsize; /* Receive buffer size */
- u16 ch_rdelay; /* Receive delay time */
-
- u16 ch_tlw; /* Our currently set low water mark */
-
- u16 ch_cook; /* Output character mask */
-
- u8 ch_card; /* Card channel is on */
- u8 ch_stopc; /* Stop character */
- u8 ch_startc; /* Start character */
-
- u8 ch_mostat; /* FEP output modem status */
- u8 ch_mistat; /* FEP input modem status */
- u8 ch_mforce; /* Modem values to be forced */
- u8 ch_mval; /* Force values */
- u8 ch_fepstopc; /* FEP stop character */
- u8 ch_fepstartc; /* FEP start character */
-
- u8 ch_astopc; /* Auxiliary Stop character */
- u8 ch_astartc; /* Auxiliary Start character */
- u8 ch_fepastopc; /* Auxiliary FEP stop char */
- u8 ch_fepastartc; /* Auxiliary FEP start char */
-
- u8 ch_hflow; /* FEP hardware handshake */
- u8 ch_dsr; /* stores real dsr value */
- u8 ch_cd; /* stores real cd value */
- u8 ch_tx_win; /* channel tx buffer window */
- u8 ch_rx_win; /* channel rx buffer window */
- uint ch_custom_speed; /* Custom baud, if set */
- uint ch_baud_info; /* Current baud info for /proc output */
- ulong ch_rxcount; /* total of data received so far */
- ulong ch_txcount; /* total of data transmitted so far */
- ulong ch_err_parity; /* Count of parity errors on channel */
- ulong ch_err_frame; /* Count of framing errors on channel */
- ulong ch_err_break; /* Count of breaks on channel */
- ulong ch_err_overrun; /* Count of overruns on channel */
-};
-
-/************************************************************************
- * Command structure definition.
- ************************************************************************/
-struct cm_t {
- unsigned short cm_head; /* Command buffer head offset */
- unsigned short cm_tail; /* Command buffer tail offset */
- unsigned short cm_start; /* start offset of buffer */
- unsigned short cm_max; /* last offset of buffer */
-};
-
-/************************************************************************
- * Event structure definition.
- ************************************************************************/
-struct ev_t {
- unsigned short ev_head; /* Command buffer head offset */
- unsigned short ev_tail; /* Command buffer tail offset */
- unsigned short ev_start; /* start offset of buffer */
- unsigned short ev_max; /* last offset of buffer */
-};
-
-/************************************************************************
- * Download buffer structure.
- ************************************************************************/
-struct downld_t {
- u8 dl_type; /* Header */
- u8 dl_seq; /* Download sequence */
- ushort dl_srev; /* Software revision number */
- ushort dl_lrev; /* Low revision number */
- ushort dl_hrev; /* High revision number */
- ushort dl_seg; /* Start segment address */
- ushort dl_size; /* Number of bytes to download */
- u8 dl_data[1024]; /* Download data */
-};
-
-/************************************************************************
- * Per channel buffer structure
- ************************************************************************
- * Base Structure Entries Usage Meanings to Host *
- * *
- * W = read write R = read only *
- * C = changed by commands only *
- * U = unknown (may be changed w/o notice) *
- ************************************************************************/
-struct bs_t {
- unsigned short tp_jmp; /* Transmit poll jump */
- unsigned short tc_jmp; /* Cooked procedure jump */
- unsigned short ri_jmp; /* Not currently used */
- unsigned short rp_jmp; /* Receive poll jump */
-
- unsigned short tx_seg; /* W Tx segment */
- unsigned short tx_head; /* W Tx buffer head offset */
- unsigned short tx_tail; /* R Tx buffer tail offset */
- unsigned short tx_max; /* W Tx buffer size - 1 */
-
- unsigned short rx_seg; /* W Rx segment */
- unsigned short rx_head; /* W Rx buffer head offset */
- unsigned short rx_tail; /* R Rx buffer tail offset */
- unsigned short rx_max; /* W Rx buffer size - 1 */
-
- unsigned short tx_lw; /* W Tx buffer low water mark */
- unsigned short rx_lw; /* W Rx buffer low water mark */
- unsigned short rx_hw; /* W Rx buffer high water mark*/
- unsigned short incr; /* W Increment to next channel*/
-
- unsigned short fepdev; /* U SCC device base address */
- unsigned short edelay; /* W Exception delay */
- unsigned short blen; /* W Break length */
- unsigned short btime; /* U Break complete time */
-
- unsigned short iflag; /* C UNIX input flags */
- unsigned short oflag; /* C UNIX output flags */
- unsigned short cflag; /* C UNIX control flags */
- unsigned short wfill[13]; /* U Reserved for expansion */
-
- unsigned char num; /* U Channel number */
- unsigned char ract; /* U Receiver active counter */
- unsigned char bstat; /* U Break status bits */
- unsigned char tbusy; /* W Transmit busy */
- unsigned char iempty; /* W Transmit empty event */
- /* enable */
- unsigned char ilow; /* W Transmit low-water event */
- /* enable */
- unsigned char idata; /* W Receive data interrupt */
- /* enable */
- unsigned char eflag; /* U Host event flags */
-
- unsigned char tflag; /* U Transmit flags */
- unsigned char rflag; /* U Receive flags */
- unsigned char xmask; /* U Transmit ready flags */
- unsigned char xval; /* U Transmit ready value */
- unsigned char m_stat; /* RC Modem status bits */
- unsigned char m_change; /* U Modem bits which changed */
- unsigned char m_int; /* W Modem interrupt enable */
- /* bits */
- unsigned char m_last; /* U Last modem status */
-
- unsigned char mtran; /* C Unreported modem trans */
- unsigned char orun; /* C Buffer overrun occurred */
- unsigned char astartc; /* W Auxiliary Xon char */
- unsigned char astopc; /* W Auxiliary Xoff char */
- unsigned char startc; /* W Xon character */
- unsigned char stopc; /* W Xoff character */
- unsigned char vnextc; /* W Vnext character */
- unsigned char hflow; /* C Software flow control */
-
- unsigned char fillc; /* U Delay Fill character */
- unsigned char ochar; /* U Saved output character */
- unsigned char omask; /* U Output character mask */
-
- unsigned char bfill[13]; /* U Reserved for expansion */
-
- unsigned char scc[16]; /* U SCC registers */
-};
-
-struct cnode {
- struct cnode *next;
- int type;
- int numbrd;
-
- union {
- struct {
- char type; /* Board Type */
- long addr; /* Memory Address */
- char *addrstr; /* Memory Address in string */
- long pcibus; /* PCI BUS */
- char *pcibusstr; /* PCI BUS in string */
- long pcislot; /* PCI SLOT */
- char *pcislotstr; /* PCI SLOT in string */
- long nport; /* Number of Ports */
- char *id; /* tty id */
- long start; /* start of tty counting */
- char *method; /* Install method */
- char v_addr;
- char v_pcibus;
- char v_pcislot;
- char v_nport;
- char v_id;
- char v_start;
- char v_method;
- char line1;
- char line2;
- char conc1; /* total concs in line1 */
- char conc2; /* total concs in line2 */
- char module1; /* total modules for line1 */
- char module2; /* total modules for line2 */
- char *status; /* config status */
- char *dimstatus; /* Y/N */
- int status_index; /* field pointer */
- } board;
-
- struct {
- char *cable;
- char v_cable;
- long speed;
- char v_speed;
- } line;
-
- struct {
- char type;
- char *connect;
- long speed;
- long nport;
- char *id;
- char *idstr;
- long start;
- char v_connect;
- char v_speed;
- char v_nport;
- char v_id;
- char v_start;
- } conc;
-
- struct {
- char type;
- long nport;
- char *id;
- char *idstr;
- long start;
- char v_nport;
- char v_id;
- char v_start;
- } module;
-
- char *ttyname;
- char *cuname;
- char *printname;
- long majornumber;
- long altpin;
- long ttysize;
- long chsize;
- long bssize;
- long unsize;
- long f2size;
- long vpixsize;
- long useintr;
- } u;
-};
-#endif
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff