serial_cs.rar_PCMCIA

/*====================================================================== A driver for PCMCIA serial devices serial_cs.c 1.134 2002/05/04 05:48:53 The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/ Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. The initial developer of the original code is David A. Hinds <dahinds@users.sourceforge.net>. Portions created by David A. Hinds are Copyright (C) 1999 David A. Hinds. All Rights Reserved. Alternatively, the contents of this file may be used under the terms of the GNU General Public License version 2 (the "GPL"), in which case the provisions of the GPL are applicable instead of the above. If you wish to allow the use of your version of this file only under the terms of the GPL and not to allow others to use your version of this file under the MPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL. If you do not delete the provisions above, a recipient may use your version of this file under either the MPL or the GPL. ======================================================================*/ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/ptrace.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/serial_core.h> #include <linux/delay.h> #include <linux/major.h> #include <asm/io.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> #include <pcmcia/cisreg.h> #include "8250.h" /*====================================================================*/ /* Parameters that can be set with 'insmod' */ /* Enable the speaker? */ static int do_sound = 1; /* Skip strict UART tests? */ static int buggy_uart; module_param(do_sound, int, 0444); module_param(buggy_uart, int, 0444); /*====================================================================*/ /* Table of multi-port card ID's */ struct serial_quirk { unsigned int manfid; unsigned int prodid; int multi; /* 1 = multifunction, > 1 = # ports */ void (*config)(struct pcmcia_device *); void (*setup)(struct pcmcia_device *, struct uart_8250_port *); void (*wakeup)(struct pcmcia_device *); int (*post)(struct pcmcia_device *); }; struct serial_info { struct pcmcia_device *p_dev; int ndev; int multi; int slave; int manfid; int prodid; int c950ctrl; int line[4]; const struct serial_quirk *quirk; }; struct serial_cfg_mem { tuple_t tuple; cisparse_t parse; u_char buf[256]; }; /* * vers_1 5.0, "Brain Boxes", "2-Port RS232 card", "r6" * manfid 0x0160, 0x0104 * This card appears to have a 14.7456MHz clock. */ /* Generic Modem: MD55x (GPRS/EDGE) have * Elan VPU16551 UART with 14.7456MHz oscillator * manfid 0x015D, 0x4C45 */ static void quirk_setup_brainboxes_0104(struct pcmcia_device *link, struct uart_8250_port *uart) { uart->port.uartclk = 14745600; } static int quirk_post_ibm(struct pcmcia_device *link) { u8 val; int ret; ret = pcmcia_read_config_byte(link, 0x800, &val); if (ret) goto failed; ret = pcmcia_write_config_byte(link, 0x800, val | 1); if (ret) goto failed; return 0; failed: return -ENODEV; } /* * Nokia cards are not really multiport cards. Shouldn't this * be handled by setting the quirk entry .multi = 0 | 1 ? */ static void quirk_config_nokia(struct pcmcia_device *link) { struct serial_info *info = link->priv; if (info->multi > 1) info->multi = 1; } static void quirk_wakeup_oxsemi(struct pcmcia_device *link) { struct serial_info *info = link->priv; if (info->c950ctrl) outb(12, info->c950ctrl + 1); } /* request_region? oxsemi branch does no request_region too... */ /* * This sequence is needed to properly initialize MC45 attached to OXCF950. * I tried decreasing these msleep()s, but it worked properly (survived * 1000 stop/start operations) with these timeouts (or bigger). */ static void quirk_wakeup_possio_gcc(struct pcmcia_device *link) { struct serial_info *info = link->priv; unsigned int ctrl = info->c950ctrl; outb(0xA, ctrl + 1); msleep(100); outb(0xE, ctrl + 1); msleep(300); outb(0xC, ctrl + 1); msleep(100); outb(0xE, ctrl + 1); msleep(200); outb(0xF, ctrl + 1); msleep(100); outb(0xE, ctrl + 1); msleep(100); outb(0xC, ctrl + 1); } /* * Socket Dual IO: this enables irq's for second port */ static void quirk_config_socket(struct pcmcia_device *link) { struct serial_info *info = link->priv; if (info->multi) link->config_flags |= CONF_ENABLE_ESR; } static const struct serial_quirk quirks[] = { { .manfid = 0x0160, .prodid = 0x0104, .multi = -1, .setup = quirk_setup_brainboxes_0104, }, { .manfid = 0x015D, .prodid = 0x4C45, .multi = -1, .setup = quirk_setup_brainboxes_0104, }, { .manfid = MANFID_IBM, .prodid = ~0, .multi = -1, .post = quirk_post_ibm, }, { .manfid = MANFID_INTEL, .prodid = PRODID_INTEL_DUAL_RS232, .multi = 2, }, { .manfid = MANFID_NATINST, .prodid = PRODID_NATINST_QUAD_RS232, .multi = 4, }, { .manfid = MANFID_NOKIA, .prodid = ~0, .multi = -1, .config = quirk_config_nokia, }, { .manfid = MANFID_OMEGA, .prodid = PRODID_OMEGA_QSP_100, .multi = 4, }, { .manfid = MANFID_OXSEMI, .prodid = ~0, .multi = -1, .wakeup = quirk_wakeup_oxsemi, }, { .manfid = MANFID_POSSIO, .prodid = PRODID_POSSIO_GCC, .multi = -1, .wakeup = quirk_wakeup_possio_gcc, }, { .manfid = MANFID_QUATECH, .prodid = PRODID_QUATECH_DUAL_RS232, .multi = 2, }, { .manfid = MANFID_QUATECH, .prodid = PRODID_QUATECH_DUAL_RS232_D1, .multi = 2, }, { .manfid = MANFID_QUATECH, .prodid = PRODID_QUATECH_DUAL_RS232_G, .multi = 2, }, { .manfid = MANFID_QUATECH, .prodid = PRODID_QUATECH_QUAD_RS232, .multi = 4, }, { .manfid = MANFID_SOCKET, .prodid = PRODID_SOCKET_DUAL_RS232, .multi = 2, .config = quirk_config_socket, }, { .manfid = MANFID_SOCKET, .prodid = ~0, .multi = -1, .config = quirk_config_socket, } }; static int serial_config(struct pcmcia_device * link); static void serial_remove(struct pcmcia_device *link) { struct serial_info *info = link->priv; int i; dev_dbg(&link->dev, "serial_release\n"); /* * Recheck to see if the device is still configured. */ for (i = 0; i < info->ndev; i++) serial8250_unregister_port(info->line[i]); if (!info->slave) pcmcia_disable_device(link); } static int serial_suspend(struct pcmcia_device *link) { struct serial_info *info = link->priv; int i; for (i = 0; i < info->ndev; i++) serial8250_suspend_port(info->line[i]); return 0; } static int serial_resume(struct pcmcia_device *link) { struct serial_info *info = link->priv; int i; for (i = 0; i < info->ndev; i++) serial8250_resume_port(info->line[i]); if (info->quirk && info->quirk->wakeup) info->quirk->wakeup(link); return 0; } static int serial_probe(struct pcmcia_device *link) { struct serial_info *info; dev_dbg(&link->dev, "serial_attach()\n"); /* Create new serial device */ info = kzalloc(sizeof (*info), GFP_KERNEL); if (!info) return -ENOMEM; info->p_dev = link; link->priv = info; link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; if (do_sound) link->config_flags |= CONF_ENABLE_SPKR; return serial_config(link); } static void serial_detach(struct pcmcia_device *link) { struct serial_info *info = link->priv; dev_dbg(&link->dev, "serial_detach\n"); /* * Ensure that the ports have been released. */ serial_remove(link); /* free bits */ kfree(info); } /*========