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