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1275 |
phoenix |
/*======================================================================
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A driver for PCMCIA IDE/ATA disk cards
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ide_cs.c 1.26 1999/11/16 02:10:49
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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 which
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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/hdreg.h>
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#include <linux/major.h>
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#include <linux/ide.h>
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#include <asm/io.h>
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#include <asm/system.h>
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49 |
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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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#ifdef PCMCIA_DEBUG
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static int pc_debug = PCMCIA_DEBUG;
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MODULE_PARM(pc_debug, "i");
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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 1.26 1999/11/16 02:10:49 (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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/* Parameters that can be set with 'insmod' */
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/* Bit map of interrupts to choose from */
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static u_int irq_mask = 0xdeb8;
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static int irq_list[4] = { -1 };
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MODULE_PARM(irq_mask, "i");
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MODULE_PARM(irq_list, "1-4i");
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MODULE_LICENSE("GPL");
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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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#ifdef IDE4_MAJOR
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IDE4_MAJOR, IDE5_MAJOR
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#endif
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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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struct tq_struct rel_task;
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} ide_info_t;
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static void ide_config(dev_link_t *link);
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static void ide_release(void *arg);
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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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static void cs_error(client_handle_t handle, int func, int ret)
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{
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error_info_t err = { func, ret };
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CardServices(ReportError, handle, &err);
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}
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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 i, 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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INIT_TQUEUE(&info->rel_task, ide_release, link);
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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_INFO2_VALID|IRQ_LEVEL_ID;
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if (irq_list[0] == -1)
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link->irq.IRQInfo2 = irq_mask;
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else
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for (i = 0; i < 4; i++)
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link->irq.IRQInfo2 |= 1 << irq_list[i];
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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.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
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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 = CardServices(RegisterClient, &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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ide_info_t *info = link->priv;
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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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schedule_task(&info->rel_task);
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flush_scheduled_tasks();
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}
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if (link->handle) {
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ret = CardServices(DeregisterClient, link->handle);
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if (ret != CS_SUCCESS)
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cs_error(link->handle, DeregisterClient, ret);
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210 |
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}
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/* Unlink, free device structure */
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*linkp = link->next;
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kfree(info);
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} /* ide_detach */
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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, args...) \
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while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
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#define CFG_CHECK(fn, args...) \
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if (CardServices(fn, args) != 0) goto next_entry
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int idecs_register (int arg1, int arg2, int irq)
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{
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hw_regs_t hw;
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ide_init_hwif_ports(&hw, (ide_ioreg_t) arg1, (ide_ioreg_t) arg2, NULL);
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hw.irq = irq;
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hw.chipset = ide_pci; /* this enables IRQ sharing w/ PCI irqs */
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return ide_register_hw(&hw, NULL);
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}
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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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u_short buf[128];
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247 |
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cisparse_t parse;
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248 |
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config_info_t conf;
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249 |
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cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
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250 |
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cistpl_cftable_entry_t dflt = { 0 };
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int i, pass, last_ret, last_fn, hd=-1, io_base, ctl_base;
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252 |
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DEBUG(0, "ide_config(0x%p)\n", link);
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254 |
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255 |
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tuple.TupleData = (cisdata_t *)buf;
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256 |
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tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
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257 |
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tuple.Attributes = 0;
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258 |
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tuple.DesiredTuple = CISTPL_CONFIG;
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259 |
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CS_CHECK(GetFirstTuple, handle, &tuple);
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260 |
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CS_CHECK(GetTupleData, handle, &tuple);
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261 |
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CS_CHECK(ParseTuple, handle, &tuple, &parse);
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262 |
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link->conf.ConfigBase = parse.config.base;
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263 |
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link->conf.Present = parse.config.rmask[0];
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264 |
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265 |
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/* Configure card */
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266 |
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link->state |= DEV_CONFIG;
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267 |
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|
268 |
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/* Not sure if this is right... look up the current Vcc */
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269 |
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CS_CHECK(GetConfigurationInfo, handle, &conf);
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270 |
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link->conf.Vcc = conf.Vcc;
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271 |
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272 |
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pass = io_base = ctl_base = 0;
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273 |
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tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
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274 |
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tuple.Attributes = 0;
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275 |
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CS_CHECK(GetFirstTuple, handle, &tuple);
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276 |
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while (1) {
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277 |
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CFG_CHECK(GetTupleData, handle, &tuple);
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278 |
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CFG_CHECK(ParseTuple, handle, &tuple, &parse);
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279 |
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|
280 |
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/* Check for matching Vcc, unless we're desperate */
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281 |
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if (!pass) {
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282 |
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if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
|
283 |
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if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM]/10000)
|
284 |
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goto next_entry;
|
285 |
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} else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
|
286 |
|
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if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM]/10000)
|
287 |
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goto next_entry;
|
288 |
|
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}
|
289 |
|
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}
|
290 |
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|
291 |
|
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if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
|
292 |
|
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link->conf.Vpp1 = link->conf.Vpp2 =
|
293 |
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cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
|
294 |
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else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
|
295 |
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link->conf.Vpp1 = link->conf.Vpp2 =
|
296 |
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dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
|
297 |
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|
298 |
|
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if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
|
299 |
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cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
|
300 |
|
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link->conf.ConfigIndex = cfg->index;
|
301 |
|
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link->io.BasePort1 = io->win[0].base;
|
302 |
|
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link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
|
303 |
|
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if (!(io->flags & CISTPL_IO_16BIT))
|
304 |
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link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
|
305 |
|
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if (io->nwin == 2) {
|
306 |
|
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link->io.NumPorts1 = 8;
|
307 |
|
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link->io.BasePort2 = io->win[1].base;
|
308 |
|
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link->io.NumPorts2 = 1;
|
309 |
|
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CFG_CHECK(RequestIO, link->handle, &link->io);
|
310 |
|
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io_base = link->io.BasePort1;
|
311 |
|
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ctl_base = link->io.BasePort2;
|
312 |
|
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} else if ((io->nwin == 1) && (io->win[0].len >= 16)) {
|
313 |
|
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link->io.NumPorts1 = io->win[0].len;
|
314 |
|
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link->io.NumPorts2 = 0;
|
315 |
|
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CFG_CHECK(RequestIO, link->handle, &link->io);
|
316 |
|
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io_base = link->io.BasePort1;
|
317 |
|
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ctl_base = link->io.BasePort1+0x0e;
|
318 |
|
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} else goto next_entry;
|
319 |
|
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/* If we've got this far, we're done */
|
320 |
|
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break;
|
321 |
|
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}
|
322 |
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|
323 |
|
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next_entry:
|
324 |
|
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if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
|
325 |
|
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if (pass) {
|
326 |
|
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CS_CHECK(GetNextTuple, handle, &tuple);
|
327 |
|
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} else if (CardServices(GetNextTuple, handle, &tuple) != 0) {
|
328 |
|
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CS_CHECK(GetFirstTuple, handle, &tuple);
|
329 |
|
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memset(&dflt, 0, sizeof(dflt));
|
330 |
|
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pass++;
|
331 |
|
|
}
|
332 |
|
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}
|
333 |
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|
334 |
|
|
CS_CHECK(RequestIRQ, handle, &link->irq);
|
335 |
|
|
CS_CHECK(RequestConfiguration, handle, &link->conf);
|
336 |
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|
337 |
|
|
/* deal with brain dead IDE resource management */
|
338 |
|
|
release_region(link->io.BasePort1, link->io.NumPorts1);
|
339 |
|
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if (link->io.NumPorts2)
|
340 |
|
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release_region(link->io.BasePort2, link->io.NumPorts2);
|
341 |
|
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|
342 |
|
|
/* retry registration in case device is still spinning up */
|
343 |
|
|
for (i = 0; i < 10; i++) {
|
344 |
|
|
if (ctl_base)
|
345 |
|
|
outb(0x02, ctl_base); /* Set nIEN = disable device interrupts */
|
346 |
|
|
hd = idecs_register(io_base, ctl_base, link->irq.AssignedIRQ);
|
347 |
|
|
if (hd >= 0) break;
|
348 |
|
|
if (link->io.NumPorts1 == 0x20) {
|
349 |
|
|
if (ctl_base)
|
350 |
|
|
outb(0x02, ctl_base+0x10);
|
351 |
|
|
hd = idecs_register(io_base+0x10, ctl_base+0x10,
|
352 |
|
|
link->irq.AssignedIRQ);
|
353 |
|
|
if (hd >= 0) {
|
354 |
|
|
io_base += 0x10; ctl_base += 0x10;
|
355 |
|
|
break;
|
356 |
|
|
}
|
357 |
|
|
}
|
358 |
|
|
__set_current_state(TASK_UNINTERRUPTIBLE);
|
359 |
|
|
schedule_timeout(HZ/10);
|
360 |
|
|
}
|
361 |
|
|
|
362 |
|
|
if (hd < 0) {
|
363 |
|
|
printk(KERN_NOTICE "ide_cs: ide_register() at 0x%03x & 0x%03x"
|
364 |
|
|
", irq %u failed\n", io_base, ctl_base,
|
365 |
|
|
link->irq.AssignedIRQ);
|
366 |
|
|
goto failed;
|
367 |
|
|
}
|
368 |
|
|
|
369 |
|
|
MOD_INC_USE_COUNT;
|
370 |
|
|
info->ndev = 1;
|
371 |
|
|
sprintf(info->node.dev_name, "hd%c", 'a'+(hd*2));
|
372 |
|
|
info->node.major = ide_major[hd];
|
373 |
|
|
info->node.minor = 0;
|
374 |
|
|
info->hd = hd;
|
375 |
|
|
link->dev = &info->node;
|
376 |
|
|
printk(KERN_INFO "ide_cs: %s: Vcc = %d.%d, Vpp = %d.%d\n",
|
377 |
|
|
info->node.dev_name, link->conf.Vcc/10, link->conf.Vcc%10,
|
378 |
|
|
link->conf.Vpp1/10, link->conf.Vpp1%10);
|
379 |
|
|
|
380 |
|
|
link->state &= ~DEV_CONFIG_PENDING;
|
381 |
|
|
return;
|
382 |
|
|
|
383 |
|
|
cs_failed:
|
384 |
|
|
cs_error(link->handle, last_fn, last_ret);
|
385 |
|
|
failed:
|
386 |
|
|
ide_release(link);
|
387 |
|
|
|
388 |
|
|
} /* ide_config */
|
389 |
|
|
|
390 |
|
|
/*======================================================================
|
391 |
|
|
|
392 |
|
|
After a card is removed, ide_release() will unregister the net
|
393 |
|
|
device, and release the PCMCIA configuration. If the device is
|
394 |
|
|
still open, this will be postponed until it is closed.
|
395 |
|
|
|
396 |
|
|
======================================================================*/
|
397 |
|
|
|
398 |
|
|
static void ide_release(void *arg)
|
399 |
|
|
{
|
400 |
|
|
dev_link_t *link = arg;
|
401 |
|
|
ide_info_t *info = link->priv;
|
402 |
|
|
|
403 |
|
|
if (!(link->state & DEV_CONFIG))
|
404 |
|
|
return;
|
405 |
|
|
|
406 |
|
|
DEBUG(0, "ide_do_release(0x%p)\n", link);
|
407 |
|
|
|
408 |
|
|
if (info->ndev) {
|
409 |
|
|
/* FIXME: if this fails we need to queue the cleanup somehow
|
410 |
|
|
-- need to investigate the required PCMCIA magic */
|
411 |
|
|
ide_unregister(info->hd);
|
412 |
|
|
MOD_DEC_USE_COUNT;
|
413 |
|
|
}
|
414 |
|
|
|
415 |
|
|
request_region(link->io.BasePort1, link->io.NumPorts1,"ide-cs");
|
416 |
|
|
if (link->io.NumPorts2)
|
417 |
|
|
request_region(link->io.BasePort2, link->io.NumPorts2,"ide-cs");
|
418 |
|
|
|
419 |
|
|
info->ndev = 0;
|
420 |
|
|
link->dev = NULL;
|
421 |
|
|
|
422 |
|
|
CardServices(ReleaseConfiguration, link->handle);
|
423 |
|
|
CardServices(ReleaseIO, link->handle, &link->io);
|
424 |
|
|
CardServices(ReleaseIRQ, link->handle, &link->irq);
|
425 |
|
|
|
426 |
|
|
link->state &= ~DEV_CONFIG;
|
427 |
|
|
|
428 |
|
|
} /* ide_release */
|
429 |
|
|
|
430 |
|
|
/*======================================================================
|
431 |
|
|
|
432 |
|
|
The card status event handler. Mostly, this schedules other
|
433 |
|
|
stuff to run after an event is received. A CARD_REMOVAL event
|
434 |
|
|
also sets some flags to discourage the ide drivers from
|
435 |
|
|
talking to the ports.
|
436 |
|
|
|
437 |
|
|
======================================================================*/
|
438 |
|
|
|
439 |
|
|
int ide_event(event_t event, int priority,
|
440 |
|
|
event_callback_args_t *args)
|
441 |
|
|
{
|
442 |
|
|
dev_link_t *link = args->client_data;
|
443 |
|
|
ide_info_t *info = link->priv;
|
444 |
|
|
|
445 |
|
|
DEBUG(1, "ide_event(0x%06x)\n", event);
|
446 |
|
|
|
447 |
|
|
switch (event) {
|
448 |
|
|
case CS_EVENT_CARD_REMOVAL:
|
449 |
|
|
link->state &= ~DEV_PRESENT;
|
450 |
|
|
if (link->state & DEV_CONFIG)
|
451 |
|
|
schedule_task(&info->rel_task);
|
452 |
|
|
break;
|
453 |
|
|
case CS_EVENT_CARD_INSERTION:
|
454 |
|
|
link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
|
455 |
|
|
ide_config(link);
|
456 |
|
|
break;
|
457 |
|
|
case CS_EVENT_PM_SUSPEND:
|
458 |
|
|
link->state |= DEV_SUSPEND;
|
459 |
|
|
/* Fall through... */
|
460 |
|
|
case CS_EVENT_RESET_PHYSICAL:
|
461 |
|
|
if (link->state & DEV_CONFIG)
|
462 |
|
|
CardServices(ReleaseConfiguration, link->handle);
|
463 |
|
|
break;
|
464 |
|
|
case CS_EVENT_PM_RESUME:
|
465 |
|
|
link->state &= ~DEV_SUSPEND;
|
466 |
|
|
/* Fall through... */
|
467 |
|
|
case CS_EVENT_CARD_RESET:
|
468 |
|
|
if (DEV_OK(link))
|
469 |
|
|
CardServices(RequestConfiguration, link->handle, &link->conf);
|
470 |
|
|
break;
|
471 |
|
|
}
|
472 |
|
|
return 0;
|
473 |
|
|
} /* ide_event */
|
474 |
|
|
|
475 |
|
|
/*====================================================================*/
|
476 |
|
|
|
477 |
|
|
static int __init init_ide_cs(void)
|
478 |
|
|
{
|
479 |
|
|
servinfo_t serv;
|
480 |
|
|
DEBUG(0, "%s\n", version);
|
481 |
|
|
CardServices(GetCardServicesInfo, &serv);
|
482 |
|
|
if (serv.Revision != CS_RELEASE_CODE) {
|
483 |
|
|
printk(KERN_NOTICE "ide_cs: Card Services release "
|
484 |
|
|
"does not match!\n");
|
485 |
|
|
return -1;
|
486 |
|
|
}
|
487 |
|
|
register_pccard_driver(&dev_info, &ide_attach, &ide_detach);
|
488 |
|
|
return 0;
|
489 |
|
|
}
|
490 |
|
|
|
491 |
|
|
static void __exit exit_ide_cs(void)
|
492 |
|
|
{
|
493 |
|
|
DEBUG(0, "ide_cs: unloading\n");
|
494 |
|
|
unregister_pccard_driver(&dev_info);
|
495 |
|
|
while (dev_list != NULL)
|
496 |
|
|
ide_detach(dev_list);
|
497 |
|
|
}
|
498 |
|
|
|
499 |
|
|
module_init(init_ide_cs);
|
500 |
|
|
module_exit(exit_ide_cs);
|