1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
481 lines
15 KiB
C
481 lines
15 KiB
C
/*======================================================================
|
|
|
|
A driver for PCMCIA IDE/ATA disk cards
|
|
|
|
ide-cs.c 1.3 2002/10/26 05:45:31
|
|
|
|
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/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/ide.h>
|
|
#include <linux/hdreg.h>
|
|
#include <linux/major.h>
|
|
#include <asm/io.h>
|
|
#include <asm/system.h>
|
|
|
|
#include <pcmcia/version.h>
|
|
#include <pcmcia/cs_types.h>
|
|
#include <pcmcia/cs.h>
|
|
#include <pcmcia/cistpl.h>
|
|
#include <pcmcia/ds.h>
|
|
#include <pcmcia/cisreg.h>
|
|
#include <pcmcia/ciscode.h>
|
|
|
|
/*====================================================================*/
|
|
|
|
/* Module parameters */
|
|
|
|
MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
|
|
MODULE_DESCRIPTION("PCMCIA ATA/IDE card driver");
|
|
MODULE_LICENSE("Dual MPL/GPL");
|
|
|
|
#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
|
|
|
|
#ifdef PCMCIA_DEBUG
|
|
INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
|
|
#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
|
|
static char *version =
|
|
"ide-cs.c 1.3 2002/10/26 05:45:31 (David Hinds)";
|
|
#else
|
|
#define DEBUG(n, args...)
|
|
#endif
|
|
|
|
/*====================================================================*/
|
|
|
|
static const char ide_major[] = {
|
|
IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR,
|
|
IDE4_MAJOR, IDE5_MAJOR
|
|
};
|
|
|
|
typedef struct ide_info_t {
|
|
dev_link_t link;
|
|
int ndev;
|
|
dev_node_t node;
|
|
int hd;
|
|
} ide_info_t;
|
|
|
|
static void ide_release(dev_link_t *);
|
|
static int ide_event(event_t event, int priority,
|
|
event_callback_args_t *args);
|
|
|
|
static dev_info_t dev_info = "ide-cs";
|
|
|
|
static dev_link_t *ide_attach(void);
|
|
static void ide_detach(dev_link_t *);
|
|
|
|
static dev_link_t *dev_list = NULL;
|
|
|
|
/*======================================================================
|
|
|
|
ide_attach() creates an "instance" of the driver, allocating
|
|
local data structures for one device. The device is registered
|
|
with Card Services.
|
|
|
|
======================================================================*/
|
|
|
|
static dev_link_t *ide_attach(void)
|
|
{
|
|
ide_info_t *info;
|
|
dev_link_t *link;
|
|
client_reg_t client_reg;
|
|
int ret;
|
|
|
|
DEBUG(0, "ide_attach()\n");
|
|
|
|
/* Create new ide device */
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info) return NULL;
|
|
memset(info, 0, sizeof(*info));
|
|
link = &info->link; link->priv = info;
|
|
|
|
link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
|
|
link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
|
|
link->io.IOAddrLines = 3;
|
|
link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
|
|
link->irq.IRQInfo1 = IRQ_LEVEL_ID;
|
|
link->conf.Attributes = CONF_ENABLE_IRQ;
|
|
link->conf.Vcc = 50;
|
|
link->conf.IntType = INT_MEMORY_AND_IO;
|
|
|
|
/* Register with Card Services */
|
|
link->next = dev_list;
|
|
dev_list = link;
|
|
client_reg.dev_info = &dev_info;
|
|
client_reg.EventMask =
|
|
CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
|
|
CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
|
|
CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
|
|
client_reg.event_handler = &ide_event;
|
|
client_reg.Version = 0x0210;
|
|
client_reg.event_callback_args.client_data = link;
|
|
ret = pcmcia_register_client(&link->handle, &client_reg);
|
|
if (ret != CS_SUCCESS) {
|
|
cs_error(link->handle, RegisterClient, ret);
|
|
ide_detach(link);
|
|
return NULL;
|
|
}
|
|
|
|
return link;
|
|
} /* ide_attach */
|
|
|
|
/*======================================================================
|
|
|
|
This deletes a driver "instance". The device is de-registered
|
|
with Card Services. If it has been released, all local data
|
|
structures are freed. Otherwise, the structures will be freed
|
|
when the device is released.
|
|
|
|
======================================================================*/
|
|
|
|
static void ide_detach(dev_link_t *link)
|
|
{
|
|
dev_link_t **linkp;
|
|
int ret;
|
|
|
|
DEBUG(0, "ide_detach(0x%p)\n", link);
|
|
|
|
/* Locate device structure */
|
|
for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
|
|
if (*linkp == link) break;
|
|
if (*linkp == NULL)
|
|
return;
|
|
|
|
if (link->state & DEV_CONFIG)
|
|
ide_release(link);
|
|
|
|
if (link->handle) {
|
|
ret = pcmcia_deregister_client(link->handle);
|
|
if (ret != CS_SUCCESS)
|
|
cs_error(link->handle, DeregisterClient, ret);
|
|
}
|
|
|
|
/* Unlink, free device structure */
|
|
*linkp = link->next;
|
|
kfree(link->priv);
|
|
|
|
} /* ide_detach */
|
|
|
|
static int idecs_register(unsigned long io, unsigned long ctl, unsigned long irq)
|
|
{
|
|
hw_regs_t hw;
|
|
memset(&hw, 0, sizeof(hw));
|
|
ide_init_hwif_ports(&hw, io, ctl, NULL);
|
|
hw.irq = irq;
|
|
hw.chipset = ide_pci;
|
|
return ide_register_hw_with_fixup(&hw, NULL, ide_undecoded_slave);
|
|
}
|
|
|
|
/*======================================================================
|
|
|
|
ide_config() is scheduled to run after a CARD_INSERTION event
|
|
is received, to configure the PCMCIA socket, and to make the
|
|
ide device available to the system.
|
|
|
|
======================================================================*/
|
|
|
|
#define CS_CHECK(fn, ret) \
|
|
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
|
|
|
|
static void ide_config(dev_link_t *link)
|
|
{
|
|
client_handle_t handle = link->handle;
|
|
ide_info_t *info = link->priv;
|
|
tuple_t tuple;
|
|
struct {
|
|
u_short buf[128];
|
|
cisparse_t parse;
|
|
config_info_t conf;
|
|
cistpl_cftable_entry_t dflt;
|
|
} *stk = NULL;
|
|
cistpl_cftable_entry_t *cfg;
|
|
int i, pass, last_ret = 0, last_fn = 0, hd, is_kme = 0;
|
|
unsigned long io_base, ctl_base;
|
|
|
|
DEBUG(0, "ide_config(0x%p)\n", link);
|
|
|
|
stk = kmalloc(sizeof(*stk), GFP_KERNEL);
|
|
if (!stk) goto err_mem;
|
|
memset(stk, 0, sizeof(*stk));
|
|
cfg = &stk->parse.cftable_entry;
|
|
|
|
tuple.TupleData = (cisdata_t *)&stk->buf;
|
|
tuple.TupleOffset = 0;
|
|
tuple.TupleDataMax = 255;
|
|
tuple.Attributes = 0;
|
|
tuple.DesiredTuple = CISTPL_CONFIG;
|
|
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
|
|
CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
|
|
CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &stk->parse));
|
|
link->conf.ConfigBase = stk->parse.config.base;
|
|
link->conf.Present = stk->parse.config.rmask[0];
|
|
|
|
tuple.DesiredTuple = CISTPL_MANFID;
|
|
if (!pcmcia_get_first_tuple(handle, &tuple) &&
|
|
!pcmcia_get_tuple_data(handle, &tuple) &&
|
|
!pcmcia_parse_tuple(handle, &tuple, &stk->parse))
|
|
is_kme = ((stk->parse.manfid.manf == MANFID_KME) &&
|
|
((stk->parse.manfid.card == PRODID_KME_KXLC005_A) ||
|
|
(stk->parse.manfid.card == PRODID_KME_KXLC005_B)));
|
|
|
|
/* Configure card */
|
|
link->state |= DEV_CONFIG;
|
|
|
|
/* Not sure if this is right... look up the current Vcc */
|
|
CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &stk->conf));
|
|
link->conf.Vcc = stk->conf.Vcc;
|
|
|
|
pass = io_base = ctl_base = 0;
|
|
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
|
|
tuple.Attributes = 0;
|
|
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
|
|
while (1) {
|
|
if (pcmcia_get_tuple_data(handle, &tuple) != 0) goto next_entry;
|
|
if (pcmcia_parse_tuple(handle, &tuple, &stk->parse) != 0) goto next_entry;
|
|
|
|
/* Check for matching Vcc, unless we're desperate */
|
|
if (!pass) {
|
|
if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
|
|
if (stk->conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
|
|
goto next_entry;
|
|
} else if (stk->dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
|
|
if (stk->conf.Vcc != stk->dflt.vcc.param[CISTPL_POWER_VNOM] / 10000)
|
|
goto next_entry;
|
|
}
|
|
}
|
|
|
|
if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
|
|
link->conf.Vpp1 = link->conf.Vpp2 =
|
|
cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
|
|
else if (stk->dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
|
|
link->conf.Vpp1 = link->conf.Vpp2 =
|
|
stk->dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;
|
|
|
|
if ((cfg->io.nwin > 0) || (stk->dflt.io.nwin > 0)) {
|
|
cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &stk->dflt.io;
|
|
link->conf.ConfigIndex = cfg->index;
|
|
link->io.BasePort1 = io->win[0].base;
|
|
link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
|
|
if (!(io->flags & CISTPL_IO_16BIT))
|
|
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
|
|
if (io->nwin == 2) {
|
|
link->io.NumPorts1 = 8;
|
|
link->io.BasePort2 = io->win[1].base;
|
|
link->io.NumPorts2 = (is_kme) ? 2 : 1;
|
|
if (pcmcia_request_io(link->handle, &link->io) != 0)
|
|
goto next_entry;
|
|
io_base = link->io.BasePort1;
|
|
ctl_base = link->io.BasePort2;
|
|
} else if ((io->nwin == 1) && (io->win[0].len >= 16)) {
|
|
link->io.NumPorts1 = io->win[0].len;
|
|
link->io.NumPorts2 = 0;
|
|
if (pcmcia_request_io(link->handle, &link->io) != 0)
|
|
goto next_entry;
|
|
io_base = link->io.BasePort1;
|
|
ctl_base = link->io.BasePort1 + 0x0e;
|
|
} else goto next_entry;
|
|
/* If we've got this far, we're done */
|
|
break;
|
|
}
|
|
|
|
next_entry:
|
|
if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
|
|
memcpy(&stk->dflt, cfg, sizeof(stk->dflt));
|
|
if (pass) {
|
|
CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
|
|
} else if (pcmcia_get_next_tuple(handle, &tuple) != 0) {
|
|
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
|
|
memset(&stk->dflt, 0, sizeof(stk->dflt));
|
|
pass++;
|
|
}
|
|
}
|
|
|
|
CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
|
|
CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
|
|
|
|
/* disable drive interrupts during IDE probe */
|
|
outb(0x02, ctl_base);
|
|
|
|
/* special setup for KXLC005 card */
|
|
if (is_kme)
|
|
outb(0x81, ctl_base+1);
|
|
|
|
/* retry registration in case device is still spinning up */
|
|
for (hd = -1, i = 0; i < 10; i++) {
|
|
hd = idecs_register(io_base, ctl_base, link->irq.AssignedIRQ);
|
|
if (hd >= 0) break;
|
|
if (link->io.NumPorts1 == 0x20) {
|
|
outb(0x02, ctl_base + 0x10);
|
|
hd = idecs_register(io_base + 0x10, ctl_base + 0x10,
|
|
link->irq.AssignedIRQ);
|
|
if (hd >= 0) {
|
|
io_base += 0x10;
|
|
ctl_base += 0x10;
|
|
break;
|
|
}
|
|
}
|
|
__set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(HZ/10);
|
|
}
|
|
|
|
if (hd < 0) {
|
|
printk(KERN_NOTICE "ide-cs: ide_register() at 0x%3lx & 0x%3lx"
|
|
", irq %u failed\n", io_base, ctl_base,
|
|
link->irq.AssignedIRQ);
|
|
goto failed;
|
|
}
|
|
|
|
info->ndev = 1;
|
|
sprintf(info->node.dev_name, "hd%c", 'a' + (hd * 2));
|
|
info->node.major = ide_major[hd];
|
|
info->node.minor = 0;
|
|
info->hd = hd;
|
|
link->dev = &info->node;
|
|
printk(KERN_INFO "ide-cs: %s: Vcc = %d.%d, Vpp = %d.%d\n",
|
|
info->node.dev_name, link->conf.Vcc / 10, link->conf.Vcc % 10,
|
|
link->conf.Vpp1 / 10, link->conf.Vpp1 % 10);
|
|
|
|
link->state &= ~DEV_CONFIG_PENDING;
|
|
kfree(stk);
|
|
return;
|
|
|
|
err_mem:
|
|
printk(KERN_NOTICE "ide-cs: ide_config failed memory allocation\n");
|
|
goto failed;
|
|
|
|
cs_failed:
|
|
cs_error(link->handle, last_fn, last_ret);
|
|
failed:
|
|
kfree(stk);
|
|
ide_release(link);
|
|
link->state &= ~DEV_CONFIG_PENDING;
|
|
} /* ide_config */
|
|
|
|
/*======================================================================
|
|
|
|
After a card is removed, ide_release() will unregister the net
|
|
device, and release the PCMCIA configuration. If the device is
|
|
still open, this will be postponed until it is closed.
|
|
|
|
======================================================================*/
|
|
|
|
void ide_release(dev_link_t *link)
|
|
{
|
|
ide_info_t *info = link->priv;
|
|
|
|
DEBUG(0, "ide_release(0x%p)\n", link);
|
|
|
|
if (info->ndev) {
|
|
/* FIXME: if this fails we need to queue the cleanup somehow
|
|
-- need to investigate the required PCMCIA magic */
|
|
ide_unregister(info->hd);
|
|
}
|
|
info->ndev = 0;
|
|
link->dev = NULL;
|
|
|
|
pcmcia_release_configuration(link->handle);
|
|
pcmcia_release_io(link->handle, &link->io);
|
|
pcmcia_release_irq(link->handle, &link->irq);
|
|
|
|
link->state &= ~DEV_CONFIG;
|
|
|
|
} /* ide_release */
|
|
|
|
/*======================================================================
|
|
|
|
The card status event handler. Mostly, this schedules other
|
|
stuff to run after an event is received. A CARD_REMOVAL event
|
|
also sets some flags to discourage the ide drivers from
|
|
talking to the ports.
|
|
|
|
======================================================================*/
|
|
|
|
int ide_event(event_t event, int priority,
|
|
event_callback_args_t *args)
|
|
{
|
|
dev_link_t *link = args->client_data;
|
|
|
|
DEBUG(1, "ide_event(0x%06x)\n", event);
|
|
|
|
switch (event) {
|
|
case CS_EVENT_CARD_REMOVAL:
|
|
link->state &= ~DEV_PRESENT;
|
|
if (link->state & DEV_CONFIG)
|
|
ide_release(link);
|
|
break;
|
|
case CS_EVENT_CARD_INSERTION:
|
|
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
|
|
ide_config(link);
|
|
break;
|
|
case CS_EVENT_PM_SUSPEND:
|
|
link->state |= DEV_SUSPEND;
|
|
/* Fall through... */
|
|
case CS_EVENT_RESET_PHYSICAL:
|
|
if (link->state & DEV_CONFIG)
|
|
pcmcia_release_configuration(link->handle);
|
|
break;
|
|
case CS_EVENT_PM_RESUME:
|
|
link->state &= ~DEV_SUSPEND;
|
|
/* Fall through... */
|
|
case CS_EVENT_CARD_RESET:
|
|
if (DEV_OK(link))
|
|
pcmcia_request_configuration(link->handle, &link->conf);
|
|
break;
|
|
}
|
|
return 0;
|
|
} /* ide_event */
|
|
|
|
static struct pcmcia_driver ide_cs_driver = {
|
|
.owner = THIS_MODULE,
|
|
.drv = {
|
|
.name = "ide-cs",
|
|
},
|
|
.attach = ide_attach,
|
|
.detach = ide_detach,
|
|
};
|
|
|
|
static int __init init_ide_cs(void)
|
|
{
|
|
return pcmcia_register_driver(&ide_cs_driver);
|
|
}
|
|
|
|
static void __exit exit_ide_cs(void)
|
|
{
|
|
pcmcia_unregister_driver(&ide_cs_driver);
|
|
BUG_ON(dev_list != NULL);
|
|
}
|
|
|
|
module_init(init_ide_cs);
|
|
module_exit(exit_ide_cs);
|