X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-ppc%2Focp.h;h=3d735b9e9f9296696a72bfae1984e5882072ee20;hb=4e4f43fe003969bdaa246374b90e16708a22ef79;hp=a7f1d4c7156a2c903970e3c3cf86b2dfbeed8e6b;hpb=86090fcac5e27b630656fe3d963a6b80e26dac44;p=linux-2.6.git diff --git a/include/asm-ppc/ocp.h b/include/asm-ppc/ocp.h index a7f1d4c71..3d735b9e9 100644 --- a/include/asm-ppc/ocp.h +++ b/include/asm-ppc/ocp.h @@ -1,103 +1,116 @@ /* * ocp.h * + * (c) Benjamin Herrenschmidt (benh@kernel.crashing.org) + * Mipsys - France * - * Current Maintainer - * Armin Kuster akuster@pacbell.net - * Jan, 2002 - * + * Derived from work (c) Armin Kuster akuster@pacbell.net * + * Additional support and port to 2.6 LDM/sysfs by + * Matt Porter + * 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. - * - * THIS SOFTWARE IS PROVIDED ``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. + * 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. * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. + * 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 #include #include +#include #include -#include +#include #include -#include /* For phys_addr_t */ -#undef DEBUG -/* #define DEBUG*/ +#include +#include -#ifdef DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif +#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 multiple irqs */ -#define OCP_NULL_TYPE 0 /* used to mark end of list */ -#define OCP_DEV_NA -1 +#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_root_buses; -extern struct list_head ocp_devices; +extern struct list_head ocp_devices; +extern struct rw_semaphore ocp_devices_sem; struct ocp_device_id { - unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */ - char name[16]; - char desc[50]; - unsigned long driver_data; /* Data private to the driver */ + unsigned int vendor, function; /* Vendor and function ID or OCP_ANY_ID */ + unsigned long driver_data; /* Data private to the driver */ }; -struct func_info { - char name[16]; - char desc[50]; -}; +/* + * 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 device; - phys_addr_t paddr; - int irq; - unsigned long pm; + 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 single ocp device managment */ +/* Struct for a given device instance */ struct ocp_device { - struct list_head global_list; - unsigned int num; /* instance of device */ - char name[80]; /* device name */ - unsigned int vendor; - unsigned int device; - phys_addr_t paddr; - int irq; - unsigned long pm; - void *ocpdev; /* 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 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 { @@ -106,23 +119,13 @@ struct ocp_driver { 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 (*save_state) (struct ocp_device *dev, u32 state); /* Save Device Context */ int (*suspend) (struct ocp_device *dev, u32 state); /* Device suspended */ int (*resume) (struct ocp_device *dev); /* Device woken up */ - int (*enable_wake) (struct ocp_device *dev, u32 state, int enable); /* Enable wake event */ struct device_driver driver; }; -#define to_ocp_dev(n) container_of(n, struct ocp_device, dev) -#define to_ocp_driver(n) container_of(n, struct ocp_driver, driver) - -extern int ocp_register_driver(struct ocp_driver *drv); -extern void ocp_unregister_driver(struct ocp_driver *drv); - -#define ocp_dev_g(n) list_entry(n, struct ocp_device, global_list) - -#define ocp_for_each_dev(dev) \ - for(dev = ocp_dev_g(ocp_devices.next); dev != ocp_dev_g(&ocp_devices); dev = ocp_dev_g(dev->global_list.next)) +#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, @@ -131,45 +134,13 @@ extern void ocp_unregister_driver(struct ocp_driver *drv); static inline void * ocp_get_drvdata(struct ocp_device *pdev) { - return pdev->ocpdev; + return pdev->drvdata; } static inline void ocp_set_drvdata(struct ocp_device *pdev, void *data) { - pdev->ocpdev = data; -} - -/* - * a helper function which helps ensure correct pci_driver - * setup and cleanup for commonly-encountered hotplug/modular cases - * - * This MUST stay in a header, as it checks for -DMODULE - */ -static inline int ocp_module_init(struct ocp_driver *drv) -{ - int rc = ocp_register_driver(drv); - - if (rc > 0) - return 0; - - /* iff CONFIG_HOTPLUG and built into kernel, we should - * leave the driver around for future hotplug events. - * For the module case, a hotplug daemon of some sort - * should load a module in response to an insert event. */ -#if defined(CONFIG_HOTPLUG) && !defined(MODULE) - if (rc == 0) - return 0; -#else - if (rc == 0) - rc = -ENODEV; -#endif - - /* if we get here, we need to clean up pci driver instance - * and return some sort of error */ - ocp_unregister_driver (drv); - - return rc; + pdev->drvdata = data; } #if defined (CONFIG_PM) @@ -180,26 +151,57 @@ static inline int ocp_module_init(struct ocp_driver *drv) static inline void ocp_force_power_off(struct ocp_device *odev) { - mtdcr(DCRN_CPMFR, mfdcr(DCRN_CPMFR) | odev->pm); + 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->pm); + 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 -extern void ocp_init(void); -extern struct bus_type ocp_bus_type; -extern struct ocp_device *ocp_get_dev(unsigned int device, int index); -extern unsigned int ocp_get_num(unsigned int device); +/* 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); -extern int ocp_generic_suspend(struct ocp_device *pdev, u32 state); -extern int ocp_generic_resume(struct ocp_device *pdev); +/* 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, 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 +#endif +#endif /* CONFIG_PPC_OCP */ #endif /* __OCP_H__ */ #endif /* __KERNEL__ */