linux_dsm_epyc7002/include/linux/mod_devicetable.h

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/*
* Device tables which are exported to userspace via
* scripts/mod/file2alias.c. You must keep that file in sync with this
* header.
*/
#ifndef LINUX_MOD_DEVICETABLE_H
#define LINUX_MOD_DEVICETABLE_H
#ifdef __KERNEL__
#include <linux/types.h>
typedef unsigned long kernel_ulong_t;
#endif
#define PCI_ANY_ID (~0)
struct pci_device_id {
__u32 vendor, device; /* Vendor and device ID or PCI_ANY_ID*/
__u32 subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */
__u32 class, class_mask; /* (class,subclass,prog-if) triplet */
kernel_ulong_t driver_data; /* Data private to the driver */
};
#define IEEE1394_MATCH_VENDOR_ID 0x0001
#define IEEE1394_MATCH_MODEL_ID 0x0002
#define IEEE1394_MATCH_SPECIFIER_ID 0x0004
#define IEEE1394_MATCH_VERSION 0x0008
struct ieee1394_device_id {
__u32 match_flags;
__u32 vendor_id;
__u32 model_id;
__u32 specifier_id;
__u32 version;
kernel_ulong_t driver_data
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
/*
* Device table entry for "new style" table-driven USB drivers.
* User mode code can read these tables to choose which modules to load.
* Declare the table as a MODULE_DEVICE_TABLE.
*
* A probe() parameter will point to a matching entry from this table.
* Use the driver_info field for each match to hold information tied
* to that match: device quirks, etc.
*
* Terminate the driver's table with an all-zeroes entry.
* Use the flag values to control which fields are compared.
*/
/**
* struct usb_device_id - identifies USB devices for probing and hotplugging
* @match_flags: Bit mask controlling of the other fields are used to match
* against new devices. Any field except for driver_info may be used,
* although some only make sense in conjunction with other fields.
* This is usually set by a USB_DEVICE_*() macro, which sets all
* other fields in this structure except for driver_info.
* @idVendor: USB vendor ID for a device; numbers are assigned
* by the USB forum to its members.
* @idProduct: Vendor-assigned product ID.
* @bcdDevice_lo: Low end of range of vendor-assigned product version numbers.
* This is also used to identify individual product versions, for
* a range consisting of a single device.
* @bcdDevice_hi: High end of version number range. The range of product
* versions is inclusive.
* @bDeviceClass: Class of device; numbers are assigned
* by the USB forum. Products may choose to implement classes,
* or be vendor-specific. Device classes specify behavior of all
* the interfaces on a devices.
* @bDeviceSubClass: Subclass of device; associated with bDeviceClass.
* @bDeviceProtocol: Protocol of device; associated with bDeviceClass.
* @bInterfaceClass: Class of interface; numbers are assigned
* by the USB forum. Products may choose to implement classes,
* or be vendor-specific. Interface classes specify behavior only
* of a given interface; other interfaces may support other classes.
* @bInterfaceSubClass: Subclass of interface; associated with bInterfaceClass.
* @bInterfaceProtocol: Protocol of interface; associated with bInterfaceClass.
* @bInterfaceNumber: Number of interface; composite devices may use
* fixed interface numbers to differentiate between vendor-specific
* interfaces.
* @driver_info: Holds information used by the driver. Usually it holds
* a pointer to a descriptor understood by the driver, or perhaps
* device flags.
*
* In most cases, drivers will create a table of device IDs by using
* USB_DEVICE(), or similar macros designed for that purpose.
* They will then export it to userspace using MODULE_DEVICE_TABLE(),
* and provide it to the USB core through their usb_driver structure.
*
* See the usb_match_id() function for information about how matches are
* performed. Briefly, you will normally use one of several macros to help
* construct these entries. Each entry you provide will either identify
* one or more specific products, or will identify a class of products
* which have agreed to behave the same. You should put the more specific
* matches towards the beginning of your table, so that driver_info can
* record quirks of specific products.
*/
struct usb_device_id {
/* which fields to match against? */
__u16 match_flags;
/* Used for product specific matches; range is inclusive */
__u16 idVendor;
__u16 idProduct;
__u16 bcdDevice_lo;
__u16 bcdDevice_hi;
/* Used for device class matches */
__u8 bDeviceClass;
__u8 bDeviceSubClass;
__u8 bDeviceProtocol;
/* Used for interface class matches */
__u8 bInterfaceClass;
__u8 bInterfaceSubClass;
__u8 bInterfaceProtocol;
/* Used for vendor-specific interface matches */
__u8 bInterfaceNumber;
/* not matched against */
kernel_ulong_t driver_info
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
/* Some useful macros to use to create struct usb_device_id */
#define USB_DEVICE_ID_MATCH_VENDOR 0x0001
#define USB_DEVICE_ID_MATCH_PRODUCT 0x0002
#define USB_DEVICE_ID_MATCH_DEV_LO 0x0004
#define USB_DEVICE_ID_MATCH_DEV_HI 0x0008
#define USB_DEVICE_ID_MATCH_DEV_CLASS 0x0010
#define USB_DEVICE_ID_MATCH_DEV_SUBCLASS 0x0020
#define USB_DEVICE_ID_MATCH_DEV_PROTOCOL 0x0040
#define USB_DEVICE_ID_MATCH_INT_CLASS 0x0080
#define USB_DEVICE_ID_MATCH_INT_SUBCLASS 0x0100
#define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200
#define USB_DEVICE_ID_MATCH_INT_NUMBER 0x0400
#define HID_ANY_ID (~0)
#define HID_BUS_ANY 0xffff
#define HID_GROUP_ANY 0x0000
struct hid_device_id {
__u16 bus;
__u16 group;
__u32 vendor;
__u32 product;
kernel_ulong_t driver_data
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
/* s390 CCW devices */
struct ccw_device_id {
__u16 match_flags; /* which fields to match against */
__u16 cu_type; /* control unit type */
__u16 dev_type; /* device type */
__u8 cu_model; /* control unit model */
__u8 dev_model; /* device model */
kernel_ulong_t driver_info;
};
#define CCW_DEVICE_ID_MATCH_CU_TYPE 0x01
#define CCW_DEVICE_ID_MATCH_CU_MODEL 0x02
#define CCW_DEVICE_ID_MATCH_DEVICE_TYPE 0x04
#define CCW_DEVICE_ID_MATCH_DEVICE_MODEL 0x08
/* s390 AP bus devices */
struct ap_device_id {
__u16 match_flags; /* which fields to match against */
__u8 dev_type; /* device type */
__u8 pad1;
__u32 pad2;
kernel_ulong_t driver_info;
};
#define AP_DEVICE_ID_MATCH_DEVICE_TYPE 0x01
/* s390 css bus devices (subchannels) */
struct css_device_id {
__u8 match_flags;
__u8 type; /* subchannel type */
__u16 pad2;
__u32 pad3;
kernel_ulong_t driver_data;
};
#define ACPI_ID_LEN 16 /* only 9 bytes needed here, 16 bytes are used */
/* to workaround crosscompile issues */
struct acpi_device_id {
__u8 id[ACPI_ID_LEN];
kernel_ulong_t driver_data;
};
#define PNP_ID_LEN 8
#define PNP_MAX_DEVICES 8
struct pnp_device_id {
__u8 id[PNP_ID_LEN];
kernel_ulong_t driver_data;
};
struct pnp_card_device_id {
__u8 id[PNP_ID_LEN];
kernel_ulong_t driver_data;
struct {
__u8 id[PNP_ID_LEN];
} devs[PNP_MAX_DEVICES];
};
#define SERIO_ANY 0xff
struct serio_device_id {
__u8 type;
__u8 extra;
__u8 id;
__u8 proto;
};
/*
* Struct used for matching a device
*/
struct of_device_id
{
char name[32];
char type[32];
char compatible[128];
#ifdef __KERNEL__
const void *data;
#else
kernel_ulong_t data;
#endif
};
/* VIO */
struct vio_device_id {
char type[32];
char compat[32];
};
/* PCMCIA */
struct pcmcia_device_id {
__u16 match_flags;
__u16 manf_id;
__u16 card_id;
__u8 func_id;
/* for real multi-function devices */
__u8 function;
/* for pseudo multi-function devices */
__u8 device_no;
__u32 prod_id_hash[4]
__attribute__((aligned(sizeof(__u32))));
/* not matched against in kernelspace*/
#ifdef __KERNEL__
const char * prod_id[4];
#else
kernel_ulong_t prod_id[4]
__attribute__((aligned(sizeof(kernel_ulong_t))));
#endif
/* not matched against */
kernel_ulong_t driver_info;
#ifdef __KERNEL__
char * cisfile;
#else
kernel_ulong_t cisfile;
#endif
};
#define PCMCIA_DEV_ID_MATCH_MANF_ID 0x0001
#define PCMCIA_DEV_ID_MATCH_CARD_ID 0x0002
#define PCMCIA_DEV_ID_MATCH_FUNC_ID 0x0004
#define PCMCIA_DEV_ID_MATCH_FUNCTION 0x0008
#define PCMCIA_DEV_ID_MATCH_PROD_ID1 0x0010
#define PCMCIA_DEV_ID_MATCH_PROD_ID2 0x0020
#define PCMCIA_DEV_ID_MATCH_PROD_ID3 0x0040
#define PCMCIA_DEV_ID_MATCH_PROD_ID4 0x0080
#define PCMCIA_DEV_ID_MATCH_DEVICE_NO 0x0100
#define PCMCIA_DEV_ID_MATCH_FAKE_CIS 0x0200
#define PCMCIA_DEV_ID_MATCH_ANONYMOUS 0x0400
/* Input */
#define INPUT_DEVICE_ID_EV_MAX 0x1f
#define INPUT_DEVICE_ID_KEY_MIN_INTERESTING 0x71
#define INPUT_DEVICE_ID_KEY_MAX 0x2ff
#define INPUT_DEVICE_ID_REL_MAX 0x0f
#define INPUT_DEVICE_ID_ABS_MAX 0x3f
#define INPUT_DEVICE_ID_MSC_MAX 0x07
#define INPUT_DEVICE_ID_LED_MAX 0x0f
#define INPUT_DEVICE_ID_SND_MAX 0x07
#define INPUT_DEVICE_ID_FF_MAX 0x7f
#define INPUT_DEVICE_ID_SW_MAX 0x0f
#define INPUT_DEVICE_ID_MATCH_BUS 1
#define INPUT_DEVICE_ID_MATCH_VENDOR 2
#define INPUT_DEVICE_ID_MATCH_PRODUCT 4
#define INPUT_DEVICE_ID_MATCH_VERSION 8
#define INPUT_DEVICE_ID_MATCH_EVBIT 0x0010
#define INPUT_DEVICE_ID_MATCH_KEYBIT 0x0020
#define INPUT_DEVICE_ID_MATCH_RELBIT 0x0040
#define INPUT_DEVICE_ID_MATCH_ABSBIT 0x0080
#define INPUT_DEVICE_ID_MATCH_MSCIT 0x0100
#define INPUT_DEVICE_ID_MATCH_LEDBIT 0x0200
#define INPUT_DEVICE_ID_MATCH_SNDBIT 0x0400
#define INPUT_DEVICE_ID_MATCH_FFBIT 0x0800
#define INPUT_DEVICE_ID_MATCH_SWBIT 0x1000
struct input_device_id {
kernel_ulong_t flags;
__u16 bustype;
__u16 vendor;
__u16 product;
__u16 version;
kernel_ulong_t evbit[INPUT_DEVICE_ID_EV_MAX / BITS_PER_LONG + 1];
kernel_ulong_t keybit[INPUT_DEVICE_ID_KEY_MAX / BITS_PER_LONG + 1];
kernel_ulong_t relbit[INPUT_DEVICE_ID_REL_MAX / BITS_PER_LONG + 1];
kernel_ulong_t absbit[INPUT_DEVICE_ID_ABS_MAX / BITS_PER_LONG + 1];
kernel_ulong_t mscbit[INPUT_DEVICE_ID_MSC_MAX / BITS_PER_LONG + 1];
kernel_ulong_t ledbit[INPUT_DEVICE_ID_LED_MAX / BITS_PER_LONG + 1];
kernel_ulong_t sndbit[INPUT_DEVICE_ID_SND_MAX / BITS_PER_LONG + 1];
kernel_ulong_t ffbit[INPUT_DEVICE_ID_FF_MAX / BITS_PER_LONG + 1];
kernel_ulong_t swbit[INPUT_DEVICE_ID_SW_MAX / BITS_PER_LONG + 1];
kernel_ulong_t driver_info;
};
[PATCH] EISA bus MODALIAS attributes support Add modalias attribute support for the almost forgotten now EISA bus and (at least some) EISA-aware modules. The modalias entry looks like (for an 3c509 NIC): eisa:sTCM5093 and the in-module alias like: eisa:sTCM5093* The patch moves struct eisa_device_id declaration from include/linux/eisa.h to include/linux/mod_devicetable.h (so that the former now #includes the latter), adds proper MODULE_DEVICE_TABLE(eisa, ...) statements for all drivers with EISA IDs I found (some drivers already have that DEVICE_TABLE declared), and adds recognision of __mod_eisa_device_table to scripts/mod/file2alias.c so that proper modules.alias will be generated. There's no support for /lib/modules/$kver/modules.eisamap, as it's not used by any existing tools, and because with in-kernel modalias mechanism those maps are obsolete anyway. The rationale for this patch is: a) to make EISA bus to act as other busses with modalias support, to unify driver loading b) to foget about EISA finally - with this patch, kernel (who still supports EISA) will be the only one who knows how to choose the necessary drivers for this bus ;) [akpm@osdl.org: fix the kbuild bit] Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Acked-the-net-bits-by: Jeff Garzik <jeff@garzik.org> Acked-the-tulip-bit-by: Valerie Henson <val_henson@linux.intel.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 15:50:56 +07:00
/* EISA */
#define EISA_SIG_LEN 8
/* The EISA signature, in ASCII form, null terminated */
struct eisa_device_id {
char sig[EISA_SIG_LEN];
kernel_ulong_t driver_data;
};
#define EISA_DEVICE_MODALIAS_FMT "eisa:s%s"
struct parisc_device_id {
__u8 hw_type; /* 5 bits used */
__u8 hversion_rev; /* 4 bits */
__u16 hversion; /* 12 bits */
__u32 sversion; /* 20 bits */
};
#define PA_HWTYPE_ANY_ID 0xff
#define PA_HVERSION_REV_ANY_ID 0xff
#define PA_HVERSION_ANY_ID 0xffff
#define PA_SVERSION_ANY_ID 0xffffffff
/* SDIO */
#define SDIO_ANY_ID (~0)
struct sdio_device_id {
__u8 class; /* Standard interface or SDIO_ANY_ID */
__u16 vendor; /* Vendor or SDIO_ANY_ID */
__u16 device; /* Device ID or SDIO_ANY_ID */
kernel_ulong_t driver_data /* Data private to the driver */
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
/* SSB core, see drivers/ssb/ */
struct ssb_device_id {
__u16 vendor;
__u16 coreid;
__u8 revision;
};
#define SSB_DEVICE(_vendor, _coreid, _revision) \
{ .vendor = _vendor, .coreid = _coreid, .revision = _revision, }
#define SSB_DEVTABLE_END \
{ 0, },
#define SSB_ANY_VENDOR 0xFFFF
#define SSB_ANY_ID 0xFFFF
#define SSB_ANY_REV 0xFF
bcma: add Broadcom specific AMBA bus driver Broadcom has released cards based on a new AMBA-based bus type. From a programming point of view, this new bus type differs from AMBA and does not use AMBA common registers. It also differs enough from SSB. We decided that a new bus driver is needed to keep the code clean. In its current form, the driver detects devices present on the bus and registers them in the system. It allows registering BCMA drivers for specified bus devices and provides them basic operations. The bus driver itself includes two important bus managing drivers: ChipCommon core driver and PCI(c) core driver. They are early used to allow correct initialization. Currently code is limited to supporting buses on PCI(e) devices, however the driver is designed to be used also on other hosts. The host abstraction layer is implemented and already used for PCI(e). Support for PCI(e) hosts is working and seems to be stable (access to 80211 core was tested successfully on a few devices). We can still optimize it by using some fixed windows, but this can be done later without affecting any external code. Windows are just ranges in MMIO used for accessing cores on the bus. Cc: Greg KH <greg@kroah.com> Cc: Michael Büsch <mb@bu3sch.de> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: George Kashperko <george@znau.edu.ua> Cc: Arend van Spriel <arend@broadcom.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Russell King <rmk@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Andy Botting <andy@andybotting.com> Cc: linuxdriverproject <devel@linuxdriverproject.org> Cc: linux-kernel@vger.kernel.org <linux-kernel@vger.kernel.org> Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-09 23:56:46 +07:00
/* Broadcom's specific AMBA core, see drivers/bcma/ */
struct bcma_device_id {
__u16 manuf;
__u16 id;
__u8 rev;
__u8 class;
};
#define BCMA_CORE(_manuf, _id, _rev, _class) \
{ .manuf = _manuf, .id = _id, .rev = _rev, .class = _class, }
#define BCMA_CORETABLE_END \
{ 0, },
#define BCMA_ANY_MANUF 0xFFFF
#define BCMA_ANY_ID 0xFFFF
#define BCMA_ANY_REV 0xFF
#define BCMA_ANY_CLASS 0xFF
struct virtio_device_id {
__u32 device;
__u32 vendor;
};
#define VIRTIO_DEV_ANY_ID 0xffffffff
/*
* For Hyper-V devices we use the device guid as the id.
*/
struct hv_vmbus_device_id {
__u8 guid[16];
kernel_ulong_t driver_data /* Data private to the driver */
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
/* rpmsg */
#define RPMSG_NAME_SIZE 32
#define RPMSG_DEVICE_MODALIAS_FMT "rpmsg:%s"
struct rpmsg_device_id {
char name[RPMSG_NAME_SIZE];
};
/* i2c */
#define I2C_NAME_SIZE 20
#define I2C_MODULE_PREFIX "i2c:"
struct i2c_device_id {
char name[I2C_NAME_SIZE];
kernel_ulong_t driver_data /* Data private to the driver */
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
/* spi */
#define SPI_NAME_SIZE 32
#define SPI_MODULE_PREFIX "spi:"
struct spi_device_id {
char name[SPI_NAME_SIZE];
kernel_ulong_t driver_data /* Data private to the driver */
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
/* dmi */
enum dmi_field {
DMI_NONE,
DMI_BIOS_VENDOR,
DMI_BIOS_VERSION,
DMI_BIOS_DATE,
DMI_SYS_VENDOR,
DMI_PRODUCT_NAME,
DMI_PRODUCT_VERSION,
DMI_PRODUCT_SERIAL,
DMI_PRODUCT_UUID,
DMI_BOARD_VENDOR,
DMI_BOARD_NAME,
DMI_BOARD_VERSION,
DMI_BOARD_SERIAL,
DMI_BOARD_ASSET_TAG,
DMI_CHASSIS_VENDOR,
DMI_CHASSIS_TYPE,
DMI_CHASSIS_VERSION,
DMI_CHASSIS_SERIAL,
DMI_CHASSIS_ASSET_TAG,
DMI_STRING_MAX,
};
struct dmi_strmatch {
unsigned char slot;
char substr[79];
};
#ifndef __KERNEL__
struct dmi_system_id {
kernel_ulong_t callback;
kernel_ulong_t ident;
struct dmi_strmatch matches[4];
kernel_ulong_t driver_data
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
#else
struct dmi_system_id {
int (*callback)(const struct dmi_system_id *);
const char *ident;
struct dmi_strmatch matches[4];
void *driver_data;
};
/*
* struct dmi_device_id appears during expansion of
* "MODULE_DEVICE_TABLE(dmi, x)". Compiler doesn't look inside it
* but this is enough for gcc 3.4.6 to error out:
* error: storage size of '__mod_dmi_device_table' isn't known
*/
#define dmi_device_id dmi_system_id
#endif
#define DMI_MATCH(a, b) { a, b }
#define PLATFORM_NAME_SIZE 20
#define PLATFORM_MODULE_PREFIX "platform:"
struct platform_device_id {
char name[PLATFORM_NAME_SIZE];
kernel_ulong_t driver_data
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
#define MDIO_MODULE_PREFIX "mdio:"
#define MDIO_ID_FMT "%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d"
#define MDIO_ID_ARGS(_id) \
(_id)>>31, ((_id)>>30) & 1, ((_id)>>29) & 1, ((_id)>>28) & 1, \
((_id)>>27) & 1, ((_id)>>26) & 1, ((_id)>>25) & 1, ((_id)>>24) & 1, \
((_id)>>23) & 1, ((_id)>>22) & 1, ((_id)>>21) & 1, ((_id)>>20) & 1, \
((_id)>>19) & 1, ((_id)>>18) & 1, ((_id)>>17) & 1, ((_id)>>16) & 1, \
((_id)>>15) & 1, ((_id)>>14) & 1, ((_id)>>13) & 1, ((_id)>>12) & 1, \
((_id)>>11) & 1, ((_id)>>10) & 1, ((_id)>>9) & 1, ((_id)>>8) & 1, \
((_id)>>7) & 1, ((_id)>>6) & 1, ((_id)>>5) & 1, ((_id)>>4) & 1, \
((_id)>>3) & 1, ((_id)>>2) & 1, ((_id)>>1) & 1, (_id) & 1
/**
* struct mdio_device_id - identifies PHY devices on an MDIO/MII bus
* @phy_id: The result of
* (mdio_read(&MII_PHYSID1) << 16 | mdio_read(&PHYSID2)) & @phy_id_mask
* for this PHY type
* @phy_id_mask: Defines the significant bits of @phy_id. A value of 0
* is used to terminate an array of struct mdio_device_id.
*/
struct mdio_device_id {
__u32 phy_id;
__u32 phy_id_mask;
};
struct zorro_device_id {
__u32 id; /* Device ID or ZORRO_WILDCARD */
kernel_ulong_t driver_data; /* Data private to the driver */
};
#define ZORRO_WILDCARD (0xffffffff) /* not official */
#define ZORRO_DEVICE_MODALIAS_FMT "zorro:i%08X"
#define ISAPNP_ANY_ID 0xffff
struct isapnp_device_id {
unsigned short card_vendor, card_device;
unsigned short vendor, function;
kernel_ulong_t driver_data; /* data private to the driver */
};
/**
* struct amba_id - identifies a device on an AMBA bus
* @id: The significant bits if the hardware device ID
* @mask: Bitmask specifying which bits of the id field are significant when
* matching. A driver binds to a device when ((hardware device ID) & mask)
* == id.
* @data: Private data used by the driver.
*/
struct amba_id {
unsigned int id;
unsigned int mask;
#ifndef __KERNEL__
kernel_ulong_t data;
#else
void *data;
#endif
};
Add driver auto probing for x86 features v4 There's a growing number of drivers that support a specific x86 feature or CPU. Currently loading these drivers currently on a generic distribution requires various driver specific hacks and it often doesn't work. This patch adds auto probing for drivers based on the x86 cpuid information, in particular based on vendor/family/model number and also based on CPUID feature bits. For example a common issue is not loading the SSE 4.2 accelerated CRC module: this can significantly lower the performance of BTRFS which relies on fast CRC. Another issue is loading the right CPUFREQ driver for the current CPU. Currently distributions often try all all possible driver until one sticks, which is not really a good way to do this. It works with existing udev without any changes. The code exports the x86 information as a generic string in sysfs that can be matched by udev's pattern matching. This scheme does not support numeric ranges, so if you want to handle e.g. ranges of model numbers they have to be encoded in ASCII or simply all models or families listed. Fixing that would require changing udev. Another issue is that udev will happily load all drivers that match, there is currently no nice way to stop a specific driver from being loaded if it's not needed (e.g. if you don't need fast CRC) But there are not that many cpu specific drivers around and they're all not that bloated, so this isn't a particularly serious issue. Originally this patch added the modalias to the normal cpu sysdevs. However sysdevs don't have all the infrastructure needed for udev, so it couldn't really autoload drivers. This patch instead adds the CPU modaliases to the cpuid devices, which are real devices with full support for udev. This implies that the cpuid driver has to be loaded to use this. This patch just adds infrastructure, some driver conversions in followups. Thanks to Kay for helping with some sysfs magic. v2: Constifcation, some updates v4: (trenn@suse.de): - Use kzalloc instead of kmalloc to terminate modalias buffer - Use uppercase hex values to match correctly against hex values containing letters Cc: Dave Jones <davej@redhat.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Jen Axboe <axboe@kernel.dk> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Huang Ying <ying.huang@intel.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-26 06:09:05 +07:00
/*
* Match x86 CPUs for CPU specific drivers.
* See documentation of "x86_match_cpu" for details.
*/
struct x86_cpu_id {
__u16 vendor;
__u16 family;
__u16 model;
__u16 feature; /* bit index */
kernel_ulong_t driver_data;
};
#define X86_FEATURE_MATCH(x) \
{ X86_VENDOR_ANY, X86_FAMILY_ANY, X86_MODEL_ANY, x }
#define X86_VENDOR_ANY 0xffff
#define X86_FAMILY_ANY 0
#define X86_MODEL_ANY 0
#define X86_FEATURE_ANY 0 /* Same as FPU, you can't test for that */
#define IPACK_ANY_FORMAT 0xff
#define IPACK_ANY_ID (~0)
struct ipack_device_id {
__u8 format; /* Format version or IPACK_ANY_ID */
__u32 vendor; /* Vendor ID or IPACK_ANY_ID */
__u32 device; /* Device ID or IPACK_ANY_ID */
};
#endif /* LINUX_MOD_DEVICETABLE_H */