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@@ -0,0 +1,355 @@
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+/*
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+ * PCMCIA high-level CIS access functions
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+ *
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+ * The initial developer of the original code is David A. Hinds
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+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
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+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
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+ *
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+ * Copyright (C) 1999 David A. Hinds
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+ * Copyright (C) 2004-2009 Dominik Brodowski
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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 version 2 as
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+ * published by the Free Software Foundation.
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+ *
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/kernel.h>
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+#include <linux/netdevice.h>
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+
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+#include <pcmcia/cs_types.h>
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+#include <pcmcia/cisreg.h>
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+#include <pcmcia/cistpl.h>
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+#include <pcmcia/ss.h>
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+#include <pcmcia/cs.h>
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+#include <pcmcia/ds.h>
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+#include "cs_internal.h"
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+
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+
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+/**
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+ * pccard_read_tuple() - internal CIS tuple access
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+ * @s: the struct pcmcia_socket where the card is inserted
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+ * @function: the device function we loop for
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+ * @code: which CIS code shall we look for?
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+ * @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
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+ *
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+ * pccard_read_tuple() reads out one tuple and attempts to parse it
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+ */
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+int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
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+ cisdata_t code, void *parse)
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+{
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+ tuple_t tuple;
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+ cisdata_t *buf;
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+ int ret;
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+
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+ buf = kmalloc(256, GFP_KERNEL);
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+ if (buf == NULL) {
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+ dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
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+ return -ENOMEM;
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+ }
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+ tuple.DesiredTuple = code;
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+ tuple.Attributes = 0;
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+ if (function == BIND_FN_ALL)
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+ tuple.Attributes = TUPLE_RETURN_COMMON;
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+ ret = pccard_get_first_tuple(s, function, &tuple);
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+ if (ret != 0)
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+ goto done;
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+ tuple.TupleData = buf;
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+ tuple.TupleOffset = 0;
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+ tuple.TupleDataMax = 255;
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+ ret = pccard_get_tuple_data(s, &tuple);
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+ if (ret != 0)
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+ goto done;
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+ ret = pcmcia_parse_tuple(&tuple, parse);
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+done:
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+ kfree(buf);
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+ return ret;
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+}
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+
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+
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+/**
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+ * pccard_loop_tuple() - loop over tuples in the CIS
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+ * @s: the struct pcmcia_socket where the card is inserted
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+ * @function: the device function we loop for
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+ * @code: which CIS code shall we look for?
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+ * @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
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+ * @priv_data: private data to be passed to the loop_tuple function.
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+ * @loop_tuple: function to call for each CIS entry of type @function. IT
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+ * gets passed the raw tuple, the paresed tuple (if @parse is
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+ * set) and @priv_data.
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+ *
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+ * pccard_loop_tuple() loops over all CIS entries of type @function, and
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+ * calls the @loop_tuple function for each entry. If the call to @loop_tuple
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+ * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
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+ */
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+int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function,
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+ cisdata_t code, cisparse_t *parse, void *priv_data,
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+ int (*loop_tuple) (tuple_t *tuple,
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+ cisparse_t *parse,
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+ void *priv_data))
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+{
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+ tuple_t tuple;
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+ cisdata_t *buf;
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+ int ret;
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+
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+ buf = kzalloc(256, GFP_KERNEL);
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+ if (buf == NULL) {
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+ dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
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+ return -ENOMEM;
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+ }
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+
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+ tuple.TupleData = buf;
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+ tuple.TupleDataMax = 255;
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+ tuple.TupleOffset = 0;
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+ tuple.DesiredTuple = code;
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+ tuple.Attributes = 0;
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+
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+ ret = pccard_get_first_tuple(s, function, &tuple);
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+ while (!ret) {
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+ if (pccard_get_tuple_data(s, &tuple))
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+ goto next_entry;
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+
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+ if (parse)
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+ if (pcmcia_parse_tuple(&tuple, parse))
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+ goto next_entry;
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+
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+ ret = loop_tuple(&tuple, parse, priv_data);
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+ if (!ret)
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+ break;
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+
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+next_entry:
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+ ret = pccard_get_next_tuple(s, function, &tuple);
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+ }
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+
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+ kfree(buf);
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+ return ret;
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+}
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+
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+struct pcmcia_cfg_mem {
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+ struct pcmcia_device *p_dev;
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+ void *priv_data;
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+ int (*conf_check) (struct pcmcia_device *p_dev,
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+ cistpl_cftable_entry_t *cfg,
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+ cistpl_cftable_entry_t *dflt,
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+ unsigned int vcc,
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+ void *priv_data);
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+ cisparse_t parse;
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+ cistpl_cftable_entry_t dflt;
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+};
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+
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+/**
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+ * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
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+ *
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+ * pcmcia_do_loop_config() is the internal callback for the call from
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+ * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
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+ * by a struct pcmcia_cfg_mem.
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+ */
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+static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
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+{
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+ cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
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+ struct pcmcia_cfg_mem *cfg_mem = priv;
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+
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+ /* default values */
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+ cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
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+ if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
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+ cfg_mem->dflt = *cfg;
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+
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+ return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
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+ cfg_mem->p_dev->socket->socket.Vcc,
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+ cfg_mem->priv_data);
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+}
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+
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+/**
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+ * pcmcia_loop_config() - loop over configuration options
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+ * @p_dev: the struct pcmcia_device which we need to loop for.
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+ * @conf_check: function to call for each configuration option.
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+ * It gets passed the struct pcmcia_device, the CIS data
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+ * describing the configuration option, and private data
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+ * being passed to pcmcia_loop_config()
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+ * @priv_data: private data to be passed to the conf_check function.
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+ *
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+ * pcmcia_loop_config() loops over all configuration options, and calls
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+ * the driver-specific conf_check() for each one, checking whether
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+ * it is a valid one. Returns 0 on success or errorcode otherwise.
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+ */
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+int pcmcia_loop_config(struct pcmcia_device *p_dev,
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+ int (*conf_check) (struct pcmcia_device *p_dev,
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+ cistpl_cftable_entry_t *cfg,
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+ cistpl_cftable_entry_t *dflt,
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+ unsigned int vcc,
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+ void *priv_data),
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+ void *priv_data)
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+{
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+ struct pcmcia_cfg_mem *cfg_mem;
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+ int ret;
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+
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+ cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
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+ if (cfg_mem == NULL)
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+ return -ENOMEM;
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+
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+ cfg_mem->p_dev = p_dev;
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+ cfg_mem->conf_check = conf_check;
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+ cfg_mem->priv_data = priv_data;
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+
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+ ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
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+ CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
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+ cfg_mem, pcmcia_do_loop_config);
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+
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+ kfree(cfg_mem);
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+ return ret;
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+}
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+EXPORT_SYMBOL(pcmcia_loop_config);
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+
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+
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+struct pcmcia_loop_mem {
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+ struct pcmcia_device *p_dev;
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+ void *priv_data;
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+ int (*loop_tuple) (struct pcmcia_device *p_dev,
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+ tuple_t *tuple,
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+ void *priv_data);
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+};
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+
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+/**
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+ * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
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+ *
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+ * pcmcia_do_loop_tuple() is the internal callback for the call from
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+ * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
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+ * by a struct pcmcia_cfg_mem.
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+ */
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+static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
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+{
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+ struct pcmcia_loop_mem *loop = priv;
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+
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+ return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
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+};
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+
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+/**
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+ * pcmcia_loop_tuple() - loop over tuples in the CIS
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+ * @p_dev: the struct pcmcia_device which we need to loop for.
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+ * @code: which CIS code shall we look for?
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+ * @priv_data: private data to be passed to the loop_tuple function.
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+ * @loop_tuple: function to call for each CIS entry of type @function. IT
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+ * gets passed the raw tuple and @priv_data.
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+ *
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+ * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
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+ * calls the @loop_tuple function for each entry. If the call to @loop_tuple
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+ * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
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+ */
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+int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
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+ int (*loop_tuple) (struct pcmcia_device *p_dev,
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+ tuple_t *tuple,
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+ void *priv_data),
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+ void *priv_data)
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+{
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+ struct pcmcia_loop_mem loop = {
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+ .p_dev = p_dev,
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+ .loop_tuple = loop_tuple,
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+ .priv_data = priv_data};
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+
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+ return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
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+ &loop, pcmcia_do_loop_tuple);
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+}
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+EXPORT_SYMBOL(pcmcia_loop_tuple);
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+
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+
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+struct pcmcia_loop_get {
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+ size_t len;
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+ cisdata_t **buf;
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+};
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+
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+/**
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+ * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
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+ *
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+ * pcmcia_do_get_tuple() is the internal callback for the call from
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+ * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
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+ * the first tuple, return 0 unconditionally. Create a memory buffer large
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+ * enough to hold the content of the tuple, and fill it with the tuple data.
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+ * The caller is responsible to free the buffer.
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+ */
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+static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
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+ void *priv)
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+{
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+ struct pcmcia_loop_get *get = priv;
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+
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+ *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
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+ if (*get->buf) {
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+ get->len = tuple->TupleDataLen;
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+ memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
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+ } else
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+ dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
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+ return 0;
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+}
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+
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+/**
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+ * pcmcia_get_tuple() - get first tuple from CIS
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+ * @p_dev: the struct pcmcia_device which we need to loop for.
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+ * @code: which CIS code shall we look for?
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+ * @buf: pointer to store the buffer to.
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+ *
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+ * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
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+ * It returns the buffer length (or zero). The caller is responsible to free
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+ * the buffer passed in @buf.
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+ */
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+size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
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+ unsigned char **buf)
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+{
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+ struct pcmcia_loop_get get = {
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+ .len = 0,
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+ .buf = buf,
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+ };
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+
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+ *get.buf = NULL;
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+ pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
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+
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+ return get.len;
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+}
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+EXPORT_SYMBOL(pcmcia_get_tuple);
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+
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+
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+/**
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+ * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
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+ *
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+ * pcmcia_do_get_mac() is the internal callback for the call from
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+ * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
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+ * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
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+ * to struct net_device->dev_addr[i].
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+ */
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+static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
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+ void *priv)
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+{
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+ struct net_device *dev = priv;
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+ int i;
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+
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+ if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
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+ return -EINVAL;
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+ if (tuple->TupleDataLen < ETH_ALEN + 2) {
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+ dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
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+ "LAN_NODE_ID\n");
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+ return -EINVAL;
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+ }
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+
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+ if (tuple->TupleData[1] != ETH_ALEN) {
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+ dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
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+ return -EINVAL;
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+ }
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+ for (i = 0; i < 6; i++)
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+ dev->dev_addr[i] = tuple->TupleData[i+2];
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+ return 0;
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+}
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+
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+/**
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+ * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
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+ * @p_dev: the struct pcmcia_device for which we want the address.
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+ * @dev: a properly prepared struct net_device to store the info to.
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+ *
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+ * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
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+ * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
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+ * must be set up properly by the driver (see examples!).
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+ */
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+int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
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+{
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+ return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
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+}
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+EXPORT_SYMBOL(pcmcia_get_mac_from_cis);
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+
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Dominik Brodowski