9a08f82b3c
Before a driver is probed, set the function's block size to the default so the driver is sure the block size is something sensible and it needn't explicitly set it. The default block size is the largest that's supported by both the card and the host, with a maximum of 512 to ensure aribitrarily sized transfer use the optimal (least) number of commands. See http://lkml.org/lkml/2007/8/7/150 for reasons for the block size choice. Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/*
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* include/linux/mmc/sdio_func.h
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*
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* Copyright 2007 Pierre Ossman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#ifndef MMC_SDIO_FUNC_H
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#define MMC_SDIO_FUNC_H
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#include <linux/device.h>
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#include <linux/mod_devicetable.h>
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struct mmc_card;
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struct sdio_func;
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typedef void (sdio_irq_handler_t)(struct sdio_func *);
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/*
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* SDIO function CIS tuple (unknown to the core)
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*/
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struct sdio_func_tuple {
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struct sdio_func_tuple *next;
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unsigned char code;
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unsigned char size;
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unsigned char data[0];
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};
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/*
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* SDIO function devices
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*/
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struct sdio_func {
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struct mmc_card *card; /* the card this device belongs to */
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struct device dev; /* the device */
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sdio_irq_handler_t *irq_handler; /* IRQ callback */
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unsigned int num; /* function number */
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unsigned char class; /* standard interface class */
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unsigned short vendor; /* vendor id */
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unsigned short device; /* device id */
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unsigned max_blksize; /* maximum block size */
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unsigned cur_blksize; /* current block size */
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unsigned int state; /* function state */
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#define SDIO_STATE_PRESENT (1<<0) /* present in sysfs */
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u8 tmpbuf[4]; /* DMA:able scratch buffer */
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struct sdio_func_tuple *tuples;
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};
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#define sdio_func_present(f) ((f)->state & SDIO_STATE_PRESENT)
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#define sdio_func_set_present(f) ((f)->state |= SDIO_STATE_PRESENT)
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#define sdio_func_id(f) ((f)->dev.bus_id)
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#define sdio_get_drvdata(f) dev_get_drvdata(&(f)->dev)
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#define sdio_set_drvdata(f,d) dev_set_drvdata(&(f)->dev, d)
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/*
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* SDIO function device driver
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*/
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struct sdio_driver {
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char *name;
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const struct sdio_device_id *id_table;
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int (*probe)(struct sdio_func *, const struct sdio_device_id *);
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void (*remove)(struct sdio_func *);
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struct device_driver drv;
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};
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/**
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* SDIO_DEVICE - macro used to describe a specific SDIO device
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* @vend: the 16 bit manufacturer code
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* @dev: the 16 bit function id
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*
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* This macro is used to create a struct sdio_device_id that matches a
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* specific device. The class field will be set to SDIO_ANY_ID.
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*/
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#define SDIO_DEVICE(vend,dev) \
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.class = SDIO_ANY_ID, \
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.vendor = (vend), .device = (dev)
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/**
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* SDIO_DEVICE_CLASS - macro used to describe a specific SDIO device class
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* @dev_class: the 8 bit standard interface code
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*
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* This macro is used to create a struct sdio_device_id that matches a
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* specific standard SDIO function type. The vendor and device fields will
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* be set to SDIO_ANY_ID.
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*/
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#define SDIO_DEVICE_CLASS(dev_class) \
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.class = (dev_class), \
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.vendor = SDIO_ANY_ID, .device = SDIO_ANY_ID
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extern int sdio_register_driver(struct sdio_driver *);
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extern void sdio_unregister_driver(struct sdio_driver *);
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/*
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* SDIO I/O operations
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*/
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extern void sdio_claim_host(struct sdio_func *func);
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extern void sdio_release_host(struct sdio_func *func);
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extern int sdio_enable_func(struct sdio_func *func);
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extern int sdio_disable_func(struct sdio_func *func);
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extern int sdio_set_block_size(struct sdio_func *func, unsigned blksz);
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extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler);
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extern int sdio_release_irq(struct sdio_func *func);
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extern unsigned char sdio_readb(struct sdio_func *func,
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unsigned int addr, int *err_ret);
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extern unsigned short sdio_readw(struct sdio_func *func,
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unsigned int addr, int *err_ret);
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extern unsigned long sdio_readl(struct sdio_func *func,
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unsigned int addr, int *err_ret);
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extern int sdio_memcpy_fromio(struct sdio_func *func, void *dst,
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unsigned int addr, int count);
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extern int sdio_readsb(struct sdio_func *func, void *dst,
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unsigned int addr, int count);
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extern void sdio_writeb(struct sdio_func *func, unsigned char b,
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unsigned int addr, int *err_ret);
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extern void sdio_writew(struct sdio_func *func, unsigned short b,
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unsigned int addr, int *err_ret);
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extern void sdio_writel(struct sdio_func *func, unsigned long b,
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unsigned int addr, int *err_ret);
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extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
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void *src, int count);
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extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
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void *src, int count);
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#endif
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