Copyright 2000-2001 ATMEL Corporation.
Copyright 2003 Simon Kelley.
- This code was developed from version 2.1.1 of the Atmel drivers,
- released by Atmel corp. under the GPL in December 2002. It also
- includes code from the Linux aironet drivers (C) Benjamin Reed,
- and the Linux PCMCIA package, (C) David Hinds.
+ This code was developed from version 2.1.1 of the Atmel drivers,
+ released by Atmel corp. under the GPL in December 2002. It also
+ includes code from the Linux aironet drivers (C) Benjamin Reed,
+ and the Linux PCMCIA package, (C) David Hinds.
- For all queries about this code, please contact the current author,
+ For all queries about this code, please contact the current author,
Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
This program is free software; you can redistribute it and/or modify
******************************************************************************/
-#include <linux/config.h>
#ifdef __IN_PCMCIA_PACKAGE__
#include <pcmcia/k_compat.h>
#endif
#include "atmel.h"
-/*
- All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
- you do not define PCMCIA_DEBUG at all, all the debug code will be
- left out. If you compile with PCMCIA_DEBUG=0, the debug code will
- be present but disabled -- but it can then be enabled for specific
- modules at load time with a 'pc_debug=#' option to insmod.
-*/
-
-#ifdef PCMCIA_DEBUG
-static int pc_debug = PCMCIA_DEBUG;
-module_param(pc_debug, int, 0);
-static char *version = "$Revision: 1.2 $";
-#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
-#else
-#define DEBUG(n, args...)
-#endif
/*====================================================================*/
event is received. The config() and release() entry points are
used to configure or release a socket, in response to card
insertion and ejection events. They are invoked from the atmel_cs
- event handler.
+ event handler.
*/
-static void atmel_config(dev_link_t *link);
-static void atmel_release(dev_link_t *link);
-static int atmel_event(event_t event, int priority,
- event_callback_args_t *args);
+static int atmel_config(struct pcmcia_device *link);
+static void atmel_release(struct pcmcia_device *link);
/*
The attach() and detach() entry points are used to create and destroy
needed to manage one actual PCMCIA card.
*/
-static dev_link_t *atmel_attach(void);
static void atmel_detach(struct pcmcia_device *p_dev);
-/*
- You'll also need to prototype all the functions that will actually
- be used to talk to your device. See 'pcmem_cs' for a good example
- of a fully self-sufficient driver; the other drivers rely more or
- less on other parts of the kernel.
-*/
-
-/*
- The dev_info variable is the "key" that is used to match up this
- device driver with appropriate cards, through the card configuration
- database.
-*/
-
-static dev_info_t dev_info = "atmel_cs";
-
-/*
- A linked list of "instances" of the atmelnet device. Each actual
- PCMCIA card corresponds to one device instance, and is described
- by one dev_link_t structure (defined in ds.h).
-
- You may not want to use a linked list for this -- for example, the
- memory card driver uses an array of dev_link_t pointers, where minor
- device numbers are used to derive the corresponding array index.
-*/
-
-/*
- A driver needs to provide a dev_node_t structure for each device
- on a card. In some cases, there is only one device per card (for
- example, ethernet cards, modems). In other cases, there may be
- many actual or logical devices (SCSI adapters, memory cards with
- multiple partitions). The dev_node_t structures need to be kept
- in a linked list starting at the 'dev' field of a dev_link_t
- structure. We allocate them in the card's private data structure,
- because they generally shouldn't be allocated dynamically.
-
- In this case, we also provide a flag to indicate if a device is
- "stopped" due to a power management event, or card ejection. The
- device IO routines can use a flag like this to throttle IO to a
- card that is not ready to accept it.
-*/
-
typedef struct local_info_t {
- dev_node_t node;
struct net_device *eth_dev;
} local_info_t;
/*======================================================================
-
+
atmel_attach() creates an "instance" of the driver, allocating
local data structures for one device. The device is registered
with Card Services.
-
+
The dev_link structure is initialized, but we don't actually
configure the card at this point -- we wait until we receive a
card insertion event.
-
+
======================================================================*/
-static dev_link_t *atmel_attach(void)
+static int atmel_probe(struct pcmcia_device *p_dev)
{
- client_reg_t client_reg;
- dev_link_t *link;
local_info_t *local;
- int ret;
-
- DEBUG(0, "atmel_attach()\n");
- /* Initialize the dev_link_t structure */
- link = kzalloc(sizeof(struct dev_link_t), GFP_KERNEL);
- if (!link) {
- printk(KERN_ERR "atmel_cs: no memory for new device\n");
- return NULL;
- }
-
- /* Interrupt setup */
- link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
- link->irq.IRQInfo1 = IRQ_LEVEL_ID;
- link->irq.Handler = NULL;
-
+ dev_dbg(&p_dev->dev, "atmel_attach()\n");
+
/*
General socket configuration defaults can go here. In this
client, we assume very little, and rely on the CIS for almost
and attributes of IO windows) are fixed by the nature of the
device, and can be hard-wired here.
*/
- link->conf.Attributes = 0;
- link->conf.Vcc = 50;
- link->conf.IntType = INT_MEMORY_AND_IO;
-
+ p_dev->conf.Attributes = 0;
+ p_dev->conf.IntType = INT_MEMORY_AND_IO;
+
/* Allocate space for private device-specific data */
local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
if (!local) {
printk(KERN_ERR "atmel_cs: no memory for new device\n");
- kfree (link);
- return NULL;
- }
- link->priv = local;
-
- /* Register with Card Services */
- link->next = NULL;
- client_reg.dev_info = &dev_info;
- client_reg.Version = 0x0210;
- client_reg.event_callback_args.client_data = link;
- ret = pcmcia_register_client(&link->handle, &client_reg);
- if (ret != 0) {
- cs_error(link->handle, RegisterClient, ret);
- atmel_detach(link->handle);
- return NULL;
+ return -ENOMEM;
}
-
- return link;
+ p_dev->priv = local;
+
+ return atmel_config(p_dev);
} /* atmel_attach */
/*======================================================================
-
+
This deletes a driver "instance". The device is de-registered
with Card Services. If it has been released, all local data
structures are freed. Otherwise, the structures will be freed
when the device is released.
-
+
======================================================================*/
-static void atmel_detach(struct pcmcia_device *p_dev)
+static void atmel_detach(struct pcmcia_device *link)
{
- dev_link_t *link = dev_to_instance(p_dev);
+ dev_dbg(&link->dev, "atmel_detach\n");
- DEBUG(0, "atmel_detach(0x%p)\n", link);
-
- if (link->state & DEV_CONFIG)
- atmel_release(link);
+ atmel_release(link);
kfree(link->priv);
- kfree(link);
}
/*======================================================================
-
+
atmel_config() is scheduled to run after a CARD_INSERTION event
is received, to configure the PCMCIA socket, and to make the
device available to the system.
-
- ======================================================================*/
-#define CS_CHECK(fn, ret) \
-do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+ ======================================================================*/
/* Call-back function to interrogate PCMCIA-specific information
about the current existance of the card */
static int card_present(void *arg)
-{
- dev_link_t *link = (dev_link_t *)arg;
- if (link->state & DEV_SUSPEND)
- return 0;
- else if (link->state & DEV_PRESENT)
+{
+ struct pcmcia_device *link = (struct pcmcia_device *)arg;
+
+ if (pcmcia_dev_present(link))
return 1;
-
+
return 0;
}
-static void atmel_config(dev_link_t *link)
+static int atmel_config_check(struct pcmcia_device *p_dev,
+ cistpl_cftable_entry_t *cfg,
+ cistpl_cftable_entry_t *dflt,
+ unsigned int vcc,
+ void *priv_data)
+{
+ if (cfg->index == 0)
+ return -ENODEV;
+
+ /* Does this card need audio output? */
+ if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
+ p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
+ p_dev->conf.Status = CCSR_AUDIO_ENA;
+ }
+
+ /* Use power settings for Vcc and Vpp if present */
+ /* Note that the CIS values need to be rescaled */
+ if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
+ p_dev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
+ else if (dflt->vpp1.present & (1<<CISTPL_POWER_VNOM))
+ p_dev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM]/10000;
+
+ p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
+
+ /* IO window settings */
+ p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0;
+ if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
+ cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
+ p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+ if (!(io->flags & CISTPL_IO_8BIT))
+ p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+ if (!(io->flags & CISTPL_IO_16BIT))
+ p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ p_dev->io.BasePort1 = io->win[0].base;
+ p_dev->io.NumPorts1 = io->win[0].len;
+ if (io->nwin > 1) {
+ p_dev->io.Attributes2 = p_dev->io.Attributes1;
+ p_dev->io.BasePort2 = io->win[1].base;
+ p_dev->io.NumPorts2 = io->win[1].len;
+ }
+ }
+
+ /* This reserves IO space but doesn't actually enable it */
+ return pcmcia_request_io(p_dev, &p_dev->io);
+}
+
+static int atmel_config(struct pcmcia_device *link)
{
- client_handle_t handle;
- tuple_t tuple;
- cisparse_t parse;
local_info_t *dev;
- int last_fn, last_ret;
- u_char buf[64];
+ int ret;
struct pcmcia_device_id *did;
- handle = link->handle;
dev = link->priv;
- did = handle_to_dev(handle).driver_data;
-
- DEBUG(0, "atmel_config(0x%p)\n", link);
-
- tuple.Attributes = 0;
- tuple.TupleData = buf;
- tuple.TupleDataMax = sizeof(buf);
- tuple.TupleOffset = 0;
-
- /*
- This reads the card's CONFIG tuple to find its configuration
- registers.
- */
- tuple.DesiredTuple = CISTPL_CONFIG;
- CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
- CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
- CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
- link->conf.ConfigBase = parse.config.base;
- link->conf.Present = parse.config.rmask[0];
-
- /* Configure card */
- link->state |= DEV_CONFIG;
-
+ did = dev_get_drvdata(&link->dev);
+
+ dev_dbg(&link->dev, "atmel_config\n");
+
/*
In this loop, we scan the CIS for configuration table entries,
each of which describes a valid card configuration, including
voltage, IO window, memory window, and interrupt settings.
-
+
We make no assumptions about the card to be configured: we use
just the information available in the CIS. In an ideal world,
this would work for any PCMCIA card, but it requires a complete
these things without consulting the CIS, and most client drivers
will only use the CIS to fill in implementation-defined details.
*/
- tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
- CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
- while (1) {
- cistpl_cftable_entry_t dflt = { 0 };
- cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
- if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
- pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
- goto next_entry;
-
- if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
- if (cfg->index == 0) goto next_entry;
- link->conf.ConfigIndex = cfg->index;
-
- /* Does this card need audio output? */
- if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
- link->conf.Attributes |= CONF_ENABLE_SPKR;
- link->conf.Status = CCSR_AUDIO_ENA;
- }
-
- /* Use power settings for Vcc and Vpp if present */
- /* Note that the CIS values need to be rescaled */
- if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM))
- link->conf.Vcc = cfg->vcc.param[CISTPL_POWER_VNOM]/10000;
- else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM))
- link->conf.Vcc = dflt.vcc.param[CISTPL_POWER_VNOM]/10000;
-
- if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
- link->conf.Vpp1 = link->conf.Vpp2 =
- cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
- else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
- link->conf.Vpp1 = link->conf.Vpp2 =
- dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
-
- /* Do we need to allocate an interrupt? */
- if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
- link->conf.Attributes |= CONF_ENABLE_IRQ;
-
- /* IO window settings */
- link->io.NumPorts1 = link->io.NumPorts2 = 0;
- if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
- cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
- link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
- if (!(io->flags & CISTPL_IO_8BIT))
- link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
- if (!(io->flags & CISTPL_IO_16BIT))
- link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
- link->io.BasePort1 = io->win[0].base;
- link->io.NumPorts1 = io->win[0].len;
- if (io->nwin > 1) {
- link->io.Attributes2 = link->io.Attributes1;
- link->io.BasePort2 = io->win[1].base;
- link->io.NumPorts2 = io->win[1].len;
- }
- }
-
- /* This reserves IO space but doesn't actually enable it */
- if (pcmcia_request_io(link->handle, &link->io) != 0)
- goto next_entry;
-
- /* If we got this far, we're cool! */
- break;
-
- next_entry:
- CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
+ if (pcmcia_loop_config(link, atmel_config_check, NULL))
+ goto failed;
+
+ if (!link->irq) {
+ dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
+ goto failed;
}
-
- /*
- Allocate an interrupt line. Note that this does not assign a
- handler to the interrupt, unless the 'Handler' member of the
- irq structure is initialized.
- */
- if (link->conf.Attributes & CONF_ENABLE_IRQ)
- CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
-
+
/*
This actually configures the PCMCIA socket -- setting up
the I/O windows and the interrupt mapping, and putting the
card and host interface into "Memory and IO" mode.
*/
- CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
-
- if (link->irq.AssignedIRQ == 0) {
- printk(KERN_ALERT
- "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
- goto cs_failed;
- }
-
- ((local_info_t*)link->priv)->eth_dev =
- init_atmel_card(link->irq.AssignedIRQ,
+ ret = pcmcia_request_configuration(link, &link->conf);
+ if (ret)
+ goto failed;
+
+ ((local_info_t*)link->priv)->eth_dev =
+ init_atmel_card(link->irq,
link->io.BasePort1,
did ? did->driver_info : ATMEL_FW_TYPE_NONE,
- &handle_to_dev(handle),
- card_present,
+ &link->dev,
+ card_present,
link);
- if (!((local_info_t*)link->priv)->eth_dev)
- goto cs_failed;
-
-
- /*
- At this point, the dev_node_t structure(s) need to be
- initialized and arranged in a linked list at link->dev.
- */
- strcpy(dev->node.dev_name, ((local_info_t*)link->priv)->eth_dev->name );
- dev->node.major = dev->node.minor = 0;
- link->dev = &dev->node;
-
- link->state &= ~DEV_CONFIG_PENDING;
- return;
-
- cs_failed:
- cs_error(link->handle, last_fn, last_ret);
+ if (!((local_info_t*)link->priv)->eth_dev)
+ goto failed;
+
+
+ return 0;
+
+ failed:
atmel_release(link);
+ return -ENODEV;
}
/*======================================================================
-
+
After a card is removed, atmel_release() will unregister the
device, and release the PCMCIA configuration. If the device is
still open, this will be postponed until it is closed.
-
+
======================================================================*/
-static void atmel_release(dev_link_t *link)
+static void atmel_release(struct pcmcia_device *link)
{
struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
-
- DEBUG(0, "atmel_release(0x%p)\n", link);
-
- /* Unlink the device chain */
- link->dev = NULL;
-
- if (dev)
- stop_atmel_card(dev);
- ((local_info_t*)link->priv)->eth_dev = NULL;
-
- /* Don't bother checking to see if these succeed or not */
- pcmcia_release_configuration(link->handle);
- if (link->io.NumPorts1)
- pcmcia_release_io(link->handle, &link->io);
- if (link->irq.AssignedIRQ)
- pcmcia_release_irq(link->handle, &link->irq);
- link->state &= ~DEV_CONFIG;
-}
-static int atmel_suspend(struct pcmcia_device *dev)
-{
- dev_link_t *link = dev_to_instance(dev);
- local_info_t *local = link->priv;
+ dev_dbg(&link->dev, "atmel_release\n");
- link->state |= DEV_SUSPEND;
- if (link->state & DEV_CONFIG) {
- netif_device_detach(local->eth_dev);
- pcmcia_release_configuration(link->handle);
- }
+ if (dev)
+ stop_atmel_card(dev);
+ ((local_info_t*)link->priv)->eth_dev = NULL;
- return 0;
+ pcmcia_disable_device(link);
}
-static int atmel_resume(struct pcmcia_device *dev)
+static int atmel_suspend(struct pcmcia_device *link)
{
- dev_link_t *link = dev_to_instance(dev);
local_info_t *local = link->priv;
- link->state &= ~DEV_SUSPEND;
- if (link->state & DEV_CONFIG) {
- pcmcia_request_configuration(link->handle, &link->conf);
- atmel_open(local->eth_dev);
- netif_device_attach(local->eth_dev);
- }
+ netif_device_detach(local->eth_dev);
return 0;
}
-/*======================================================================
-
- The card status event handler. Mostly, this schedules other
- stuff to run after an event is received.
-
- When a CARD_REMOVAL event is received, we immediately set a
- private flag to block future accesses to this device. All the
- functions that actually access the device should check this flag
- to make sure the card is still present.
-
- ======================================================================*/
-
-static int atmel_event(event_t event, int priority,
- event_callback_args_t *args)
+static int atmel_resume(struct pcmcia_device *link)
{
- dev_link_t *link = args->client_data;
+ local_info_t *local = link->priv;
- DEBUG(1, "atmel_event(0x%06x)\n", event);
+ atmel_open(local->eth_dev);
+ netif_device_attach(local->eth_dev);
- switch (event) {
- case CS_EVENT_CARD_INSERTION:
- link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
- atmel_config(link);
- break;
- }
return 0;
-} /* atmel_event */
+}
/*====================================================================*/
/* We use the driver_info field to store the correct firmware type for a card. */
.drv = {
.name = "atmel_cs",
},
- .attach = atmel_attach,
- .event = atmel_event,
+ .probe = atmel_probe,
.remove = atmel_detach,
.id_table = atmel_ids,
.suspend = atmel_suspend,
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGE.
+ POSSIBILITY OF SUCH DAMAGE.
*/
module_init(atmel_cs_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff