linux/include/linux/ioc3.h
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   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (c) 2005 Stanislaw Skowronek <skylark@linux-mips.org>
   7 */
   8
   9#ifndef _LINUX_IOC3_H
  10#define _LINUX_IOC3_H
  11
  12#include <asm/sn/ioc3.h>
  13
  14#define IOC3_MAX_SUBMODULES     32
  15
  16#define IOC3_CLASS_NONE         0
  17#define IOC3_CLASS_BASE_IP27    1
  18#define IOC3_CLASS_BASE_IP30    2
  19#define IOC3_CLASS_MENET_123    3
  20#define IOC3_CLASS_MENET_4      4
  21#define IOC3_CLASS_CADDUO       5
  22#define IOC3_CLASS_SERIAL       6
  23
  24/* One of these per IOC3 */
  25struct ioc3_driver_data {
  26        struct list_head list;
  27        int id;                         /* IOC3 sequence number */
  28        /* PCI mapping */
  29        unsigned long pma;              /* physical address */
  30        struct ioc3 __iomem *vma;       /* pointer to registers */
  31        struct pci_dev *pdev;           /* PCI device */
  32        /* IRQ stuff */
  33        int dual_irq;                   /* set if separate IRQs are used */
  34        int irq_io, irq_eth;            /* IRQ numbers */
  35        /* GPIO magic */
  36        spinlock_t gpio_lock;
  37        unsigned int gpdr_shadow;
  38        /* NIC identifiers */
  39        char nic_part[32];
  40        char nic_serial[16];
  41        char nic_mac[6];
  42        /* submodule set */
  43        int class;
  44        void *data[IOC3_MAX_SUBMODULES];        /* for submodule use */
  45        int active[IOC3_MAX_SUBMODULES];        /* set if probe succeeds */
  46        /* is_ir_lock must be held while
  47         * modifying sio_ie values, so
  48         * we can be sure that sio_ie is
  49         * not changing when we read it
  50         * along with sio_ir.
  51         */
  52        spinlock_t ir_lock;     /* SIO_IE[SC] mod lock */
  53};
  54
  55/* One per submodule */
  56struct ioc3_submodule {
  57        char *name;             /* descriptive submodule name */
  58        struct module *owner;   /* owning kernel module */
  59        int ethernet;           /* set for ethernet drivers */
  60        int (*probe) (struct ioc3_submodule *, struct ioc3_driver_data *);
  61        int (*remove) (struct ioc3_submodule *, struct ioc3_driver_data *);
  62        int id;                 /* assigned by IOC3, index for the "data" array */
  63        /* IRQ stuff */
  64        unsigned int irq_mask;  /* IOC3 IRQ mask, leave clear for Ethernet */
  65        int reset_mask;         /* non-zero if you want the ioc3.c module to reset interrupts */
  66        int (*intr) (struct ioc3_submodule *, struct ioc3_driver_data *, unsigned int);
  67        /* private submodule data */
  68        void *data;             /* assigned by submodule */
  69};
  70
  71/**********************************
  72 * Functions needed by submodules *
  73 **********************************/
  74
  75#define IOC3_W_IES              0
  76#define IOC3_W_IEC              1
  77
  78/* registers a submodule for all existing and future IOC3 chips */
  79extern int ioc3_register_submodule(struct ioc3_submodule *);
  80/* unregisters a submodule */
  81extern void ioc3_unregister_submodule(struct ioc3_submodule *);
  82/* enables IRQs indicated by irq_mask for a specified IOC3 chip */
  83extern void ioc3_enable(struct ioc3_submodule *, struct ioc3_driver_data *, unsigned int);
  84/* ackowledges specified IRQs */
  85extern void ioc3_ack(struct ioc3_submodule *, struct ioc3_driver_data *, unsigned int);
  86/* disables IRQs indicated by irq_mask for a specified IOC3 chip */
  87extern void ioc3_disable(struct ioc3_submodule *, struct ioc3_driver_data *, unsigned int);
  88/* atomically sets GPCR bits */
  89extern void ioc3_gpcr_set(struct ioc3_driver_data *, unsigned int);
  90/* general ireg writer */
  91extern void ioc3_write_ireg(struct ioc3_driver_data *idd, uint32_t value, int reg);
  92
  93#endif
  94
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