// SPDX-License-Identifier: GPL-2.0-only /* * PCMCIA high-level CIS access functions * * The initial developer of the original code is David A. Hinds * <[email protected]>. Portions created by David A. Hinds * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. * * Copyright (C) 1999 David A. Hinds * Copyright (C) 2004-2010 Dominik Brodowski */ #include <linux/slab.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <pcmcia/cisreg.h> #include <pcmcia/cistpl.h> #include <pcmcia/ss.h> #include <pcmcia/ds.h> #include "cs_internal.h" /** * pccard_read_tuple() - internal CIS tuple access * @s: the struct pcmcia_socket where the card is inserted * @function: the device function we loop for * @code: which CIS code shall we look for? * @parse: buffer where the tuple shall be parsed (or NULL, if no parse) * * pccard_read_tuple() reads out one tuple and attempts to parse it */ int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse) { … } /** * pccard_loop_tuple() - loop over tuples in the CIS * @s: the struct pcmcia_socket where the card is inserted * @function: the device function we loop for * @code: which CIS code shall we look for? * @parse: buffer where the tuple shall be parsed (or NULL, if no parse) * @priv_data: private data to be passed to the loop_tuple function. * @loop_tuple: function to call for each CIS entry of type @function. IT * gets passed the raw tuple, the paresed tuple (if @parse is * set) and @priv_data. * * pccard_loop_tuple() loops over all CIS entries of type @function, and * calls the @loop_tuple function for each entry. If the call to @loop_tuple * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. */ static int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, cisparse_t *parse, void *priv_data, int (*loop_tuple) (tuple_t *tuple, cisparse_t *parse, void *priv_data)) { … } /* * pcmcia_io_cfg_data_width() - convert cfgtable to data path width parameter */ static int pcmcia_io_cfg_data_width(unsigned int flags) { … } struct pcmcia_cfg_mem { … }; /* * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config() * * pcmcia_do_loop_config() is the internal callback for the call from * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred * by a struct pcmcia_cfg_mem. */ static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv) { … } /** * pcmcia_loop_config() - loop over configuration options * @p_dev: the struct pcmcia_device which we need to loop for. * @conf_check: function to call for each configuration option. * It gets passed the struct pcmcia_device and private data * being passed to pcmcia_loop_config() * @priv_data: private data to be passed to the conf_check function. * * pcmcia_loop_config() loops over all configuration options, and calls * the driver-specific conf_check() for each one, checking whether * it is a valid one. Returns 0 on success or errorcode otherwise. */ int pcmcia_loop_config(struct pcmcia_device *p_dev, int (*conf_check) (struct pcmcia_device *p_dev, void *priv_data), void *priv_data) { … } EXPORT_SYMBOL(…); struct pcmcia_loop_mem { … }; /* * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config() * * pcmcia_do_loop_tuple() is the internal callback for the call from * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred * by a struct pcmcia_cfg_mem. */ static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv) { struct pcmcia_loop_mem *loop = priv; return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data); }; /** * pcmcia_loop_tuple() - loop over tuples in the CIS * @p_dev: the struct pcmcia_device which we need to loop for. * @code: which CIS code shall we look for? * @priv_data: private data to be passed to the loop_tuple function. * @loop_tuple: function to call for each CIS entry of type @function. IT * gets passed the raw tuple and @priv_data. * * pcmcia_loop_tuple() loops over all CIS entries of type @function, and * calls the @loop_tuple function for each entry. If the call to @loop_tuple * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. */ int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code, int (*loop_tuple) (struct pcmcia_device *p_dev, tuple_t *tuple, void *priv_data), void *priv_data) { … } EXPORT_SYMBOL(…); struct pcmcia_loop_get { … }; /* * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple() * * pcmcia_do_get_tuple() is the internal callback for the call from * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in * the first tuple, return 0 unconditionally. Create a memory buffer large * enough to hold the content of the tuple, and fill it with the tuple data. * The caller is responsible to free the buffer. */ static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, void *priv) { … } /** * pcmcia_get_tuple() - get first tuple from CIS * @p_dev: the struct pcmcia_device which we need to loop for. * @code: which CIS code shall we look for? * @buf: pointer to store the buffer to. * * pcmcia_get_tuple() gets the content of the first CIS entry of type @code. * It returns the buffer length (or zero). The caller is responsible to free * the buffer passed in @buf. */ size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code, unsigned char **buf) { … } EXPORT_SYMBOL(…); #ifdef CONFIG_NET /* * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis() * * pcmcia_do_get_mac() is the internal callback for the call from * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the * tuple contains a proper LAN_NODE_ID of length 6, and copy the data * to struct net_device->dev_addr[i]. */ static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple, void *priv) { … } /** * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE * @p_dev: the struct pcmcia_device for which we want the address. * @dev: a properly prepared struct net_device to store the info to. * * pcmcia_get_mac_from_cis() reads out the hardware MAC address from * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which * must be set up properly by the driver (see examples!). */ int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev) { … } EXPORT_SYMBOL(…); #endif /* CONFIG_NET */
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