diff options
Diffstat (limited to 'drivers/ide/legacy/ide-cs.c')
| -rw-r--r-- | drivers/ide/legacy/ide-cs.c | 481 |
1 files changed, 481 insertions, 0 deletions
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c new file mode 100644 index 00000000000..e20327e54b1 --- /dev/null +++ b/drivers/ide/legacy/ide-cs.c @@ -0,0 +1,481 @@ +/*====================================================================== + + 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); |