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481 lines
15 KiB
481 lines
15 KiB
/*======================================================================
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A driver for PCMCIA IDE/ATA disk cards
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ide-cs.c 1.3 2002/10/26 05:45:31
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The contents of this file are subject to the Mozilla Public
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License Version 1.1 (the "License"); you may not use this file
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except in compliance with the License. You may obtain a copy of
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the License at http://www.mozilla.org/MPL/
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Software distributed under the License is distributed on an "AS
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IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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implied. See the License for the specific language governing
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rights and limitations under the License.
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The initial developer of the original code is David A. Hinds
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<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
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are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
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Alternatively, the contents of this file may be used under the
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terms of the GNU General Public License version 2 (the "GPL"), in
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which case the provisions of the GPL are applicable instead of the
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above. If you wish to allow the use of your version of this file
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only under the terms of the GPL and not to allow others to use
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your version of this file under the MPL, indicate your decision
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by deleting the provisions above and replace them with the notice
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and other provisions required by the GPL. If you do not delete
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the provisions above, a recipient may use your version of this
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file under either the MPL or the GPL.
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======================================================================*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/ioport.h>
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#include <linux/ide.h>
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#include <linux/hdreg.h>
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#include <linux/major.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <pcmcia/version.h>
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#include <pcmcia/cs_types.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/ciscode.h>
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/*====================================================================*/
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/* Module parameters */
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MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
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MODULE_DESCRIPTION("PCMCIA ATA/IDE card driver");
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MODULE_LICENSE("Dual MPL/GPL");
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#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
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#ifdef PCMCIA_DEBUG
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INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
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#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
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static char *version =
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"ide-cs.c 1.3 2002/10/26 05:45:31 (David Hinds)";
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#else
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#define DEBUG(n, args...)
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#endif
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/*====================================================================*/
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static const char ide_major[] = {
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IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR,
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IDE4_MAJOR, IDE5_MAJOR
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};
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typedef struct ide_info_t {
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dev_link_t link;
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int ndev;
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dev_node_t node;
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int hd;
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} ide_info_t;
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static void ide_release(dev_link_t *);
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static int ide_event(event_t event, int priority,
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event_callback_args_t *args);
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static dev_info_t dev_info = "ide-cs";
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static dev_link_t *ide_attach(void);
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static void ide_detach(dev_link_t *);
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static dev_link_t *dev_list = NULL;
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/*======================================================================
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ide_attach() creates an "instance" of the driver, allocating
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local data structures for one device. The device is registered
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with Card Services.
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======================================================================*/
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static dev_link_t *ide_attach(void)
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{
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ide_info_t *info;
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dev_link_t *link;
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client_reg_t client_reg;
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int ret;
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DEBUG(0, "ide_attach()\n");
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/* Create new ide device */
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info = kmalloc(sizeof(*info), GFP_KERNEL);
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if (!info) return NULL;
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memset(info, 0, sizeof(*info));
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link = &info->link; link->priv = info;
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
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link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
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link->io.IOAddrLines = 3;
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link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
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link->irq.IRQInfo1 = IRQ_LEVEL_ID;
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link->conf.Attributes = CONF_ENABLE_IRQ;
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link->conf.Vcc = 50;
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link->conf.IntType = INT_MEMORY_AND_IO;
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/* Register with Card Services */
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link->next = dev_list;
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dev_list = link;
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client_reg.dev_info = &dev_info;
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client_reg.EventMask =
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CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
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CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
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CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
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client_reg.event_handler = &ide_event;
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client_reg.Version = 0x0210;
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client_reg.event_callback_args.client_data = link;
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ret = pcmcia_register_client(&link->handle, &client_reg);
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if (ret != CS_SUCCESS) {
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cs_error(link->handle, RegisterClient, ret);
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ide_detach(link);
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return NULL;
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}
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return link;
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} /* ide_attach */
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/*======================================================================
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This deletes a driver "instance". The device is de-registered
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with Card Services. If it has been released, all local data
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structures are freed. Otherwise, the structures will be freed
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when the device is released.
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======================================================================*/
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static void ide_detach(dev_link_t *link)
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{
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dev_link_t **linkp;
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int ret;
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DEBUG(0, "ide_detach(0x%p)\n", link);
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/* Locate device structure */
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for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
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if (*linkp == link) break;
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if (*linkp == NULL)
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return;
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if (link->state & DEV_CONFIG)
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ide_release(link);
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if (link->handle) {
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ret = pcmcia_deregister_client(link->handle);
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if (ret != CS_SUCCESS)
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cs_error(link->handle, DeregisterClient, ret);
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}
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/* Unlink, free device structure */
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*linkp = link->next;
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kfree(link->priv);
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} /* ide_detach */
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static int idecs_register(unsigned long io, unsigned long ctl, unsigned long irq)
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{
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hw_regs_t hw;
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memset(&hw, 0, sizeof(hw));
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ide_init_hwif_ports(&hw, io, ctl, NULL);
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hw.irq = irq;
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hw.chipset = ide_pci;
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return ide_register_hw_with_fixup(&hw, NULL, ide_undecoded_slave);
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}
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/*======================================================================
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ide_config() is scheduled to run after a CARD_INSERTION event
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is received, to configure the PCMCIA socket, and to make the
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ide device available to the system.
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======================================================================*/
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#define CS_CHECK(fn, ret) \
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do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
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static void ide_config(dev_link_t *link)
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{
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client_handle_t handle = link->handle;
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ide_info_t *info = link->priv;
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tuple_t tuple;
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struct {
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u_short buf[128];
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cisparse_t parse;
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config_info_t conf;
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cistpl_cftable_entry_t dflt;
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} *stk = NULL;
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cistpl_cftable_entry_t *cfg;
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int i, pass, last_ret = 0, last_fn = 0, hd, is_kme = 0;
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unsigned long io_base, ctl_base;
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DEBUG(0, "ide_config(0x%p)\n", link);
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stk = kmalloc(sizeof(*stk), GFP_KERNEL);
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if (!stk) goto err_mem;
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memset(stk, 0, sizeof(*stk));
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cfg = &stk->parse.cftable_entry;
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tuple.TupleData = (cisdata_t *)&stk->buf;
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tuple.TupleOffset = 0;
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tuple.TupleDataMax = 255;
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tuple.Attributes = 0;
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tuple.DesiredTuple = CISTPL_CONFIG;
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
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CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &stk->parse));
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link->conf.ConfigBase = stk->parse.config.base;
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link->conf.Present = stk->parse.config.rmask[0];
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tuple.DesiredTuple = CISTPL_MANFID;
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if (!pcmcia_get_first_tuple(handle, &tuple) &&
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!pcmcia_get_tuple_data(handle, &tuple) &&
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!pcmcia_parse_tuple(handle, &tuple, &stk->parse))
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is_kme = ((stk->parse.manfid.manf == MANFID_KME) &&
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((stk->parse.manfid.card == PRODID_KME_KXLC005_A) ||
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(stk->parse.manfid.card == PRODID_KME_KXLC005_B)));
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/* Configure card */
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link->state |= DEV_CONFIG;
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/* Not sure if this is right... look up the current Vcc */
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CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &stk->conf));
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link->conf.Vcc = stk->conf.Vcc;
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pass = io_base = ctl_base = 0;
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tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
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tuple.Attributes = 0;
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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while (1) {
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if (pcmcia_get_tuple_data(handle, &tuple) != 0) goto next_entry;
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if (pcmcia_parse_tuple(handle, &tuple, &stk->parse) != 0) goto next_entry;
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/* Check for matching Vcc, unless we're desperate */
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if (!pass) {
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if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
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if (stk->conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
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goto next_entry;
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} else if (stk->dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
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if (stk->conf.Vcc != stk->dflt.vcc.param[CISTPL_POWER_VNOM] / 10000)
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goto next_entry;
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}
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}
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if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
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link->conf.Vpp1 = link->conf.Vpp2 =
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cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
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else if (stk->dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
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link->conf.Vpp1 = link->conf.Vpp2 =
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stk->dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;
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if ((cfg->io.nwin > 0) || (stk->dflt.io.nwin > 0)) {
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cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &stk->dflt.io;
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link->conf.ConfigIndex = cfg->index;
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link->io.BasePort1 = io->win[0].base;
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link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
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if (!(io->flags & CISTPL_IO_16BIT))
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
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if (io->nwin == 2) {
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link->io.NumPorts1 = 8;
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link->io.BasePort2 = io->win[1].base;
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link->io.NumPorts2 = (is_kme) ? 2 : 1;
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if (pcmcia_request_io(link->handle, &link->io) != 0)
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goto next_entry;
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io_base = link->io.BasePort1;
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ctl_base = link->io.BasePort2;
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} else if ((io->nwin == 1) && (io->win[0].len >= 16)) {
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link->io.NumPorts1 = io->win[0].len;
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link->io.NumPorts2 = 0;
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if (pcmcia_request_io(link->handle, &link->io) != 0)
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goto next_entry;
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io_base = link->io.BasePort1;
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ctl_base = link->io.BasePort1 + 0x0e;
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} else goto next_entry;
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/* If we've got this far, we're done */
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break;
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}
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next_entry:
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if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
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memcpy(&stk->dflt, cfg, sizeof(stk->dflt));
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if (pass) {
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CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
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} else if (pcmcia_get_next_tuple(handle, &tuple) != 0) {
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CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
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memset(&stk->dflt, 0, sizeof(stk->dflt));
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pass++;
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}
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}
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CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
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CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
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/* disable drive interrupts during IDE probe */
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outb(0x02, ctl_base);
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/* special setup for KXLC005 card */
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if (is_kme)
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outb(0x81, ctl_base+1);
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/* retry registration in case device is still spinning up */
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for (hd = -1, i = 0; i < 10; i++) {
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hd = idecs_register(io_base, ctl_base, link->irq.AssignedIRQ);
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if (hd >= 0) break;
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if (link->io.NumPorts1 == 0x20) {
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outb(0x02, ctl_base + 0x10);
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hd = idecs_register(io_base + 0x10, ctl_base + 0x10,
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link->irq.AssignedIRQ);
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if (hd >= 0) {
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io_base += 0x10;
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ctl_base += 0x10;
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break;
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}
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}
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__set_current_state(TASK_UNINTERRUPTIBLE);
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schedule_timeout(HZ/10);
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}
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if (hd < 0) {
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printk(KERN_NOTICE "ide-cs: ide_register() at 0x%3lx & 0x%3lx"
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", irq %u failed\n", io_base, ctl_base,
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link->irq.AssignedIRQ);
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goto failed;
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}
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info->ndev = 1;
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sprintf(info->node.dev_name, "hd%c", 'a' + (hd * 2));
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info->node.major = ide_major[hd];
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info->node.minor = 0;
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info->hd = hd;
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link->dev = &info->node;
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printk(KERN_INFO "ide-cs: %s: Vcc = %d.%d, Vpp = %d.%d\n",
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info->node.dev_name, link->conf.Vcc / 10, link->conf.Vcc % 10,
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link->conf.Vpp1 / 10, link->conf.Vpp1 % 10);
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link->state &= ~DEV_CONFIG_PENDING;
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kfree(stk);
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return;
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err_mem:
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printk(KERN_NOTICE "ide-cs: ide_config failed memory allocation\n");
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goto failed;
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cs_failed:
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cs_error(link->handle, last_fn, last_ret);
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failed:
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kfree(stk);
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ide_release(link);
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link->state &= ~DEV_CONFIG_PENDING;
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} /* ide_config */
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/*======================================================================
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After a card is removed, ide_release() will unregister the net
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device, and release the PCMCIA configuration. If the device is
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still open, this will be postponed until it is closed.
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======================================================================*/
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void ide_release(dev_link_t *link)
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{
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ide_info_t *info = link->priv;
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DEBUG(0, "ide_release(0x%p)\n", link);
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if (info->ndev) {
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/* FIXME: if this fails we need to queue the cleanup somehow
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-- need to investigate the required PCMCIA magic */
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ide_unregister(info->hd);
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}
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info->ndev = 0;
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link->dev = NULL;
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pcmcia_release_configuration(link->handle);
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pcmcia_release_io(link->handle, &link->io);
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pcmcia_release_irq(link->handle, &link->irq);
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link->state &= ~DEV_CONFIG;
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} /* ide_release */
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/*======================================================================
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The card status event handler. Mostly, this schedules other
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stuff to run after an event is received. A CARD_REMOVAL event
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also sets some flags to discourage the ide drivers from
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talking to the ports.
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======================================================================*/
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int ide_event(event_t event, int priority,
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event_callback_args_t *args)
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{
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dev_link_t *link = args->client_data;
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DEBUG(1, "ide_event(0x%06x)\n", event);
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switch (event) {
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case CS_EVENT_CARD_REMOVAL:
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link->state &= ~DEV_PRESENT;
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if (link->state & DEV_CONFIG)
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ide_release(link);
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break;
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case CS_EVENT_CARD_INSERTION:
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link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
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ide_config(link);
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break;
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case CS_EVENT_PM_SUSPEND:
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link->state |= DEV_SUSPEND;
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/* Fall through... */
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case CS_EVENT_RESET_PHYSICAL:
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if (link->state & DEV_CONFIG)
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pcmcia_release_configuration(link->handle);
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break;
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case CS_EVENT_PM_RESUME:
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link->state &= ~DEV_SUSPEND;
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/* Fall through... */
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case CS_EVENT_CARD_RESET:
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if (DEV_OK(link))
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pcmcia_request_configuration(link->handle, &link->conf);
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break;
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}
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return 0;
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} /* ide_event */
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static struct pcmcia_driver ide_cs_driver = {
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.owner = THIS_MODULE,
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.drv = {
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.name = "ide-cs",
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},
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.attach = ide_attach,
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.detach = ide_detach,
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};
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static int __init init_ide_cs(void)
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{
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return pcmcia_register_driver(&ide_cs_driver);
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}
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static void __exit exit_ide_cs(void)
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{
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pcmcia_unregister_driver(&ide_cs_driver);
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BUG_ON(dev_list != NULL);
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}
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module_init(init_ide_cs);
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module_exit(exit_ide_cs);
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