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/*
* Slot structures for PC-CARD interface.
* Each slot has a controller specific structure
* attached to it. A slot number allows
* mapping from the character device to the
* slot structure. This is separate to the
* controller slot number to allow multiple controllers
* to be accessed.
*-------------------------------------------------------------------------
*
* Copyright (c) 1995 Andrew McRae. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Controller data - Specific to each slot controller.
*/
struct slot_ctrl {
int (*mapmem)(); /* Map memory */
int (*mapio)(); /* Map io */
void (*reset)(); /* init */
void (*disable)(); /* Disable slot */
int (*power)(); /* Set power values */
int (*ioctl)(); /* ioctl to lower level */
void (*mapirq)(); /* Map interrupt number */
int extra; /* Controller specific size */
int maxmem; /* Number of allowed memory windows */
int maxio; /* Number of allowed I/O windows */
int irqs; /* IRQ's that are allowed */
char *name; /* controller name */
/*
* The rest is maintained by the mainline PC-CARD code.
*/
struct slot_ctrl *next; /* Allows linked list of controllers */
int slots; /* Slots available */
};
/*
* Driver structure - each driver registers itself
* with the mainline PC-CARD code. These drivers are
* then available for linking to the devices.
*/
struct pccard_dev;
struct pccard_drv {
char *name; /* Driver name */
int (*handler)(struct pccard_dev *); /* Interrupt handler */
void (*unload)(struct pccard_dev *); /* Disable driver */
void (*suspend)(struct pccard_dev *); /* Suspend driver */
int (*init)(struct pccard_dev *, int); /* init device */
int attr; /* driver attributes */
unsigned int *imask; /* Interrupt mask ptr */
struct pccard_drv *next;
};
/*
* Device structure for cards. Each card may have one
* or more drivers attached to it; each driver is assumed
* to require at most one interrupt handler, one I/O block
* and one memory block. This structure is used to link the different
* devices together.
*/
struct pccard_dev {
struct pccard_dev *next; /* List of drivers */
struct isa_device isahd; /* Device details */
struct pccard_drv *drv;
void *arg; /* Device argument */
struct slot *sp; /* Back pointer to slot */
int running; /* Current state of driver */
u_char misc[128]; /* For any random info */
};
/*
* Per-slot structure.
*/
struct slot {
struct slot *next; /* Master list */
int slot; /* Slot number */
int flags; /* Slot flags (see below) */
int rwmem; /* Read/write flags */
int ex_sel; /* PID for select */
int irq; /* IRQ allocated (0 = none) */
int irqref; /* Reference count of driver IRQs */
struct pccard_dev *devices; /* List of drivers attached */
/*
* flags.
*/
unsigned int insert_seq; /* Firing up under the card */
enum cardstate state, laststate; /* Current/last card states */
struct selinfo selp; /* Info for select */
struct mem_desc mem[NUM_MEM_WINDOWS]; /* Memory windows */
struct io_desc io[NUM_IO_WINDOWS]; /* I/O windows */
struct power pwr; /* Power values */
struct slot_ctrl *ctrl; /* Per-controller data */
void *cdata; /* Controller specific data */
};
enum card_event { card_removed, card_inserted };
struct slot *pccard_alloc_slot(struct slot_ctrl *);
void pccard_event(struct slot *, enum card_event);
void pccard_remove_controller(struct slot_ctrl *);
int pccard_alloc_intr();
void pccard_add_driver(struct pccard_drv *);
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