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Staging: ipack: implement ipack device table.

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The modaliases look like ipack:fXvNdM, where X is the format version (8
bit) and N and M are the vendor and device ID represented as 32 bit
hexadecimal numbers each. Using 32 bits allows us to define IPACK_ANY_ID
as (~0) without interfering with the valid ids.

The resulting modalias string for ipoctal.ko looks like this (once
ipoctal provides a device table):
alias:          ipack:f01v000000F0d00000048*
alias:          ipack:f01v000000F0d0000002A*
alias:          ipack:f01v000000F0d00000022*
(output from modinfo)

Signed-off-by: Jens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jens Taprogge 2012-09-04 17:01:13 +02:00 committed by Greg Kroah-Hartman
parent 1f43d7bfac
commit 849e0ad257
4 changed files with 75 additions and 0 deletions
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26
drivers/staging/ipack/ipack.h
View File

@ -9,6 +9,7 @@
* Software Foundation; version 2 of the License.
*/
#include <linux/mod_devicetable.h>
#include <linux/device.h>
#define IPACK_IDPROM_OFFSET_I 0x01
@ -95,6 +96,7 @@ struct ipack_driver_ops {
*/
struct ipack_driver {
struct device_driver driver;
const struct ipack_device_id *id_table;
struct ipack_driver_ops *ops;
};
@ -169,3 +171,27 @@ void ipack_driver_unregister(struct ipack_driver *edrv);
*/
struct ipack_device *ipack_device_register(struct ipack_bus_device *bus, int slot, int irqv);
void ipack_device_unregister(struct ipack_device *dev);
/**
* DEFINE_IPACK_DEVICE_TABLE - macro used to describe a IndustryPack table
* @_table: device table name
*
* This macro is used to create a struct ipack_device_id array (a device table)
* in a generic manner.
*/
#define DEFINE_IPACK_DEVICE_TABLE(_table) \
const struct ipack_device_id _table[] __devinitconst
/**
* IPACK_DEVICE - macro used to describe a specific IndustryPack device
* @_format: the format version (currently either 1 or 2, 8 bit value)
* @vend: the 8 or 24 bit IndustryPack Vendor ID
* @dev: the 8 or 16 bit IndustryPack Device ID
*
* This macro is used to create a struct ipack_device_id that matches a specific
* device.
*/
#define IPACK_DEVICE(_format, vend, dev) \
.format = (_format), \
.vendor = (vend), \
.device = (dev)

27
drivers/staging/ipack/ipack_ids.h Normal file
View File

@ -0,0 +1,27 @@
/*
* IndustryPack Fromat, Vendor and Device IDs.
*/
/* ID section format versions */
#define IPACK_ID_VERSION_INVALID 0x00
#define IPACK_ID_VERSION_1 0x01
#define IPACK_ID_VERSION_2 0x02
/* Vendors and devices. Sort key: vendor first, device next. */
#define IPACK1_VENDOR_ID_RESERVED1 0x00
#define IPACK1_VENDOR_ID_RESERVED2 0xFF
#define IPACK1_VENDOR_ID_UNREGISTRED01 0x01
#define IPACK1_VENDOR_ID_UNREGISTRED02 0x02
#define IPACK1_VENDOR_ID_UNREGISTRED03 0x03
#define IPACK1_VENDOR_ID_UNREGISTRED04 0x04
#define IPACK1_VENDOR_ID_UNREGISTRED05 0x05
#define IPACK1_VENDOR_ID_UNREGISTRED06 0x06
#define IPACK1_VENDOR_ID_UNREGISTRED07 0x07
#define IPACK1_VENDOR_ID_UNREGISTRED08 0x08
#define IPACK1_VENDOR_ID_UNREGISTRED09 0x09
#define IPACK1_VENDOR_ID_UNREGISTRED10 0x0A
#define IPACK1_VENDOR_ID_UNREGISTRED11 0x0B
#define IPACK1_VENDOR_ID_UNREGISTRED12 0x0C
#define IPACK1_VENDOR_ID_UNREGISTRED13 0x0D
#define IPACK1_VENDOR_ID_UNREGISTRED14 0x0E
#define IPACK1_VENDOR_ID_UNREGISTRED15 0x0F

7
include/linux/mod_devicetable.h
View File

@ -600,4 +600,11 @@ struct x86_cpu_id {
#define X86_MODEL_ANY 0
#define X86_FEATURE_ANY 0 /* Same as FPU, you can't test for that */
#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 */

15
scripts/mod/file2alias.c
View File

@ -966,6 +966,21 @@ static int do_isapnp_entry(const char *filename,
}
ADD_TO_DEVTABLE("isapnp", struct isapnp_device_id, do_isapnp_entry);
/* Looks like: "ipack:fNvNdN". */
static int do_ipack_entry(const char *filename,
struct ipack_device_id *id, char *alias)
{
id->vendor = TO_NATIVE(id->vendor);
id->device = TO_NATIVE(id->device);
strcpy(alias, "ipack:");
ADD(alias, "f", id->format != IPACK_ANY_ID, id->format);
ADD(alias, "v", id->vendor != IPACK_ANY_ID, id->vendor);
ADD(alias, "d", id->device != IPACK_ANY_ID, id->device);
add_wildcard(alias);
return 1;
}
ADD_TO_DEVTABLE("ipack", struct ipack_device_id, do_ipack_entry);
/*
* Append a match expression for a single masked hex digit.
* outp points to a pointer to the character at which to append.