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-rw-r--r--include/asm-ppc/ocp.h204
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diff --git a/include/asm-ppc/ocp.h b/include/asm-ppc/ocp.h
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-/*
- * ocp.h
- *
- * (c) Benjamin Herrenschmidt (benh@kernel.crashing.org)
- * Mipsys - France
- *
- * Derived from work (c) Armin Kuster akuster@pacbell.net
- *
- * Additional support and port to 2.6 LDM/sysfs by
- * Matt Porter <mporter@kernel.crashing.org>
- * Copyright 2003-2004 MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * TODO: - Add get/put interface & fixup locking to provide same API for
- * 2.4 and 2.5
- * - Rework PM callbacks
- */
-
-#ifdef __KERNEL__
-#ifndef __OCP_H__
-#define __OCP_H__
-
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/device.h>
-#include <linux/rwsem.h>
-
-#include <asm/mmu.h>
-#include <asm/ocp_ids.h>
-
-#ifdef CONFIG_PPC_OCP
-
-#define OCP_MAX_IRQS 7
-#define MAX_EMACS 4
-#define OCP_IRQ_NA -1 /* used when ocp device does not have an irq */
-#define OCP_IRQ_MUL -2 /* used for ocp devices with multiply irqs */
-#define OCP_NULL_TYPE -1 /* used to mark end of list */
-#define OCP_CPM_NA 0 /* No Clock or Power Management avaliable */
-#define OCP_PADDR_NA 0 /* No MMIO registers */
-
-#define OCP_ANY_ID (~0)
-#define OCP_ANY_INDEX -1
-
-extern struct list_head ocp_devices;
-extern struct rw_semaphore ocp_devices_sem;
-
-struct ocp_device_id {
- unsigned int vendor, function; /* Vendor and function ID or OCP_ANY_ID */
- unsigned long driver_data; /* Data private to the driver */
-};
-
-
-/*
- * Static definition of an OCP device.
- *
- * @vendor: Vendor code. It is _STRONGLY_ discouraged to use
- * the vendor code as a way to match a unique device,
- * though I kept that possibility open, you should
- * really define different function codes for different
- * device types
- * @function: This is the function code for this device.
- * @index: This index is used for mapping the Nth function of a
- * given core. This is typically used for cross-driver
- * matching, like looking for a given MAL or ZMII from
- * an EMAC or for getting to the proper set of DCRs.
- * Indices are no longer magically calculated based on
- * structure ordering, they have to be actually coded
- * into the ocp_def to avoid any possible confusion
- * I _STRONGLY_ (again ? wow !) encourage anybody relying
- * on index mapping to encode the "target" index in an
- * associated structure pointed to by "additions", see
- * how it's done for the EMAC driver.
- * @paddr: Device physical address (may not mean anything...)
- * @irq: Interrupt line for this device (TODO: think about making
- * an array with this)
- * @pm: Currently, contains the bitmask in CPMFR DCR for the device
- * @additions: Optionally points to a function specific structure
- * providing additional informations for a given device
- * instance. It's currently used by the EMAC driver for MAL
- * channel & ZMII port mapping among others.
- * @show: Optionally points to a function specific structure
- * providing a sysfs show routine for additions fields.
- */
-struct ocp_def {
- unsigned int vendor;
- unsigned int function;
- int index;
- phys_addr_t paddr;
- int irq;
- unsigned long pm;
- void *additions;
- void (*show)(struct device *);
-};
-
-
-/* Struct for a given device instance */
-struct ocp_device {
- struct list_head link;
- char name[80]; /* device name */
- struct ocp_def *def; /* device definition */
- void *drvdata; /* driver data for this device */
- struct ocp_driver *driver;
- u32 current_state; /* Current operating state. In ACPI-speak,
- this is D0-D3, D0 being fully functional,
- and D3 being off. */
- struct device dev;
-};
-
-struct ocp_driver {
- struct list_head node;
- char *name;
- const struct ocp_device_id *id_table; /* NULL if wants all devices */
- int (*probe) (struct ocp_device *dev); /* New device inserted */
- void (*remove) (struct ocp_device *dev); /* Device removed (NULL if not a hot-plug capable driver) */
- int (*suspend) (struct ocp_device *dev, pm_message_t state); /* Device suspended */
- int (*resume) (struct ocp_device *dev); /* Device woken up */
- struct device_driver driver;
-};
-
-#define to_ocp_dev(n) container_of(n, struct ocp_device, dev)
-#define to_ocp_drv(n) container_of(n, struct ocp_driver, driver)
-
-/* Similar to the helpers above, these manipulate per-ocp_dev
- * driver-specific data. Currently stored as ocp_dev::ocpdev,
- * a void pointer, but it is not present on older kernels.
- */
-static inline void *
-ocp_get_drvdata(struct ocp_device *pdev)
-{
- return pdev->drvdata;
-}
-
-static inline void
-ocp_set_drvdata(struct ocp_device *pdev, void *data)
-{
- pdev->drvdata = data;
-}
-
-#if defined (CONFIG_PM)
-/*
- * This is right for the IBM 405 and 440 but will need to be
- * generalized if the OCP stuff gets used on other processors.
- */
-static inline void
-ocp_force_power_off(struct ocp_device *odev)
-{
- mtdcr(DCRN_CPMFR, mfdcr(DCRN_CPMFR) | odev->def->pm);
-}
-
-static inline void
-ocp_force_power_on(struct ocp_device *odev)
-{
- mtdcr(DCRN_CPMFR, mfdcr(DCRN_CPMFR) & ~odev->def->pm);
-}
-#else
-#define ocp_force_power_off(x) (void)(x)
-#define ocp_force_power_on(x) (void)(x)
-#endif
-
-/* Register/Unregister an OCP driver */
-extern int ocp_register_driver(struct ocp_driver *drv);
-extern void ocp_unregister_driver(struct ocp_driver *drv);
-
-/* Build list of devices */
-extern int ocp_early_init(void) __init;
-
-/* Find a device by index */
-extern struct ocp_device *ocp_find_device(unsigned int vendor, unsigned int function, int index);
-
-/* Get a def by index */
-extern struct ocp_def *ocp_get_one_device(unsigned int vendor, unsigned int function, int index);
-
-/* Add a device by index */
-extern int ocp_add_one_device(struct ocp_def *def);
-
-/* Remove a device by index */
-extern int ocp_remove_one_device(unsigned int vendor, unsigned int function, int index);
-
-/* Iterate over devices and execute a routine */
-extern void ocp_for_each_device(void(*callback)(struct ocp_device *, void *arg), void *arg);
-
-/* Sysfs support */
-#define OCP_SYSFS_ADDTL(type, format, name, field) \
-static ssize_t \
-show_##name##_##field(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct ocp_device *odev = to_ocp_dev(dev); \
- type *add = odev->def->additions; \
- \
- return sprintf(buf, format, add->field); \
-} \
-static DEVICE_ATTR(name##_##field, S_IRUGO, show_##name##_##field, NULL);
-
-#ifdef CONFIG_IBM_OCP
-#include <asm/ibm_ocp.h>
-#endif
-
-#endif /* CONFIG_PPC_OCP */
-#endif /* __OCP_H__ */
-#endif /* __KERNEL__ */
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