In addition this module was derived from dummy_cs.
The initial developer of dummy_cs is David A. Hinds
<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
- are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
-
+ are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+
======================================================================*/
-#include <linux/config.h>
#ifdef __IN_PCMCIA_PACKAGE__
#include <pcmcia/k_compat.h>
#endif
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <asm/system.h>
#include "airo.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
/*====================================================================*/
MODULE_AUTHOR("Benjamin Reed");
-MODULE_DESCRIPTION("Support for Cisco/Aironet 802.11 wireless ethernet \
- cards. This is the module that links the PCMCIA card \
- with the airo module.");
+MODULE_DESCRIPTION("Support for Cisco/Aironet 802.11 wireless ethernet "
+ "cards. This is the module that links the PCMCIA card "
+ "with the airo module.");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_SUPPORTED_DEVICE("Aironet 4500, 4800 and Cisco 340 PCMCIA cards");
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 airo_cs
- event handler.
+ event handler.
*/
-static void airo_config(dev_link_t *link);
-static void airo_release(dev_link_t *link);
+static int airo_config(struct pcmcia_device *link);
+static void airo_release(struct pcmcia_device *link);
/*
The attach() and detach() entry points are used to create and destroy
static void airo_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.
-*/
-
-/*
- A linked list of "instances" of the aironet 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;
/*======================================================================
-
+
airo_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 int airo_attach(struct pcmcia_device *p_dev)
+static int airo_probe(struct pcmcia_device *p_dev)
{
- dev_link_t *link;
local_info_t *local;
- DEBUG(0, "airo_attach()\n");
+ dev_dbg(&p_dev->dev, "airo_attach()\n");
- /* Initialize the dev_link_t structure */
- link = kzalloc(sizeof(struct dev_link_t), GFP_KERNEL);
- if (!link) {
- printk(KERN_ERR "airo_cs: no memory for new device\n");
- return -ENOMEM;
- }
-
- /* Interrupt setup */
- link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
- link->irq.IRQInfo1 = IRQ_LEVEL_ID;
- link->irq.Handler = NULL;
-
/*
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 "airo_cs: no memory for new device\n");
- kfree (link);
return -ENOMEM;
}
- link->priv = local;
-
- link->handle = p_dev;
- p_dev->instance = link;
-
- link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
- airo_config(link);
+ p_dev->priv = local;
- return 0;
+ return airo_config(p_dev);
} /* airo_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 airo_detach(struct pcmcia_device *p_dev)
+static void airo_detach(struct pcmcia_device *link)
{
- dev_link_t *link = dev_to_instance(p_dev);
-
- DEBUG(0, "airo_detach(0x%p)\n", link);
+ dev_dbg(&link->dev, "airo_detach\n");
- if (link->state & DEV_CONFIG)
- airo_release(link);
+ airo_release(link);
- if ( ((local_info_t*)link->priv)->eth_dev ) {
- stop_airo_card( ((local_info_t*)link->priv)->eth_dev, 0 );
+ if (((local_info_t *)link->priv)->eth_dev) {
+ stop_airo_card(((local_info_t *)link->priv)->eth_dev, 0);
}
- ((local_info_t*)link->priv)->eth_dev = NULL;
+ ((local_info_t *)link->priv)->eth_dev = NULL;
kfree(link->priv);
- kfree(link);
} /* airo_detach */
/*======================================================================
-
+
airo_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)
+static int airo_cs_config_check(struct pcmcia_device *p_dev,
+ cistpl_cftable_entry_t *cfg,
+ cistpl_cftable_entry_t *dflt,
+ unsigned int vcc,
+ void *priv_data)
+{
+ win_req_t *req = 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 */
+ if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
+ return -ENODEV;
+
+ /*
+ Now set up a common memory window, if needed. There is room
+ in the struct pcmcia_device structure for one memory window handle,
+ but if the base addresses need to be saved, or if multiple
+ windows are needed, the info should go in the private data
+ structure for this device.
+
+ Note that the memory window base is a physical address, and
+ needs to be mapped to virtual space with ioremap() before it
+ is used.
+ */
+ if ((cfg->mem.nwin > 0) || (dflt->mem.nwin > 0)) {
+ cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &dflt->mem;
+ memreq_t map;
+ req->Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM;
+ req->Base = mem->win[0].host_addr;
+ req->Size = mem->win[0].len;
+ req->AccessSpeed = 0;
+ if (pcmcia_request_window(p_dev, req, &p_dev->win) != 0)
+ return -ENODEV;
+ map.Page = 0;
+ map.CardOffset = mem->win[0].card_addr;
+ if (pcmcia_map_mem_page(p_dev, p_dev->win, &map) != 0)
+ return -ENODEV;
+ }
+ /* If we got this far, we're cool! */
+ return 0;
+}
-static void airo_config(dev_link_t *link)
+
+static int airo_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];
- win_req_t req;
- memreq_t map;
-
- handle = link->handle;
+ win_req_t *req;
+ int ret;
+
dev = link->priv;
- DEBUG(0, "airo_config(0x%p)\n", link);
-
- /*
- This reads the card's CONFIG tuple to find its configuration
- registers.
- */
- tuple.DesiredTuple = CISTPL_CONFIG;
- tuple.Attributes = 0;
- tuple.TupleData = buf;
- tuple.TupleDataMax = sizeof(buf);
- tuple.TupleOffset = 0;
- 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;
-
+ dev_dbg(&link->dev, "airo_config\n");
+
+ req = kzalloc(sizeof(win_req_t), GFP_KERNEL);
+ if (!req)
+ return -ENOMEM;
+
/*
- 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
- and accurate CIS. In practice, a driver usually "knows" most of
- 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;
-
- /*
- Now set up a common memory window, if needed. There is room
- in the dev_link_t structure for one memory window handle,
- but if the base addresses need to be saved, or if multiple
- windows are needed, the info should go in the private data
- structure for this device.
-
- Note that the memory window base is a physical address, and
- needs to be mapped to virtual space with ioremap() before it
- is used.
- */
- if ((cfg->mem.nwin > 0) || (dflt.mem.nwin > 0)) {
- cistpl_mem_t *mem =
- (cfg->mem.nwin) ? &cfg->mem : &dflt.mem;
- req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM;
- req.Base = mem->win[0].host_addr;
- req.Size = mem->win[0].len;
- req.AccessSpeed = 0;
- if (pcmcia_request_window(&link->handle, &req, &link->win) != 0)
- goto next_entry;
- map.Page = 0; map.CardOffset = mem->win[0].card_addr;
- if (pcmcia_map_mem_page(link->win, &map) != 0)
- goto next_entry;
- }
- /* If we got this far, we're cool! */
- break;
-
- next_entry:
- CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
- }
-
- /*
- 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));
-
+ * 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 and accurate CIS. In practice, a driver usually
+ * "knows" most of these things without consulting the CIS,
+ * and most client drivers will only use the CIS to fill in
+ * implementation-defined details.
+ */
+ ret = pcmcia_loop_config(link, airo_cs_config_check, req);
+ if (ret)
+ goto failed;
+
+ if (!link->irq)
+ goto failed;
+
/*
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));
- ((local_info_t*)link->priv)->eth_dev =
- init_airo_card( link->irq.AssignedIRQ,
- link->io.BasePort1, 1, &handle_to_dev(handle) );
- 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;
-
+ ret = pcmcia_request_configuration(link, &link->conf);
+ if (ret)
+ goto failed;
+ ((local_info_t *)link->priv)->eth_dev =
+ init_airo_card(link->irq,
+ link->io.BasePort1, 1, &link->dev);
+ if (!((local_info_t *)link->priv)->eth_dev)
+ goto failed;
+
/* Finally, report what we've done */
- printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d",
- dev->node.dev_name, link->conf.ConfigIndex,
- link->conf.Vcc/10, link->conf.Vcc%10);
- if (link->conf.Vpp1)
- printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
- if (link->conf.Attributes & CONF_ENABLE_IRQ)
- printk(", irq %d", link->irq.AssignedIRQ);
+ dev_info(&link->dev, "index 0x%02x: ",
+ link->conf.ConfigIndex);
+ if (link->conf.Vpp)
+ printk(", Vpp %d.%d", link->conf.Vpp/10, link->conf.Vpp%10);
+ printk(", irq %d", link->irq);
if (link->io.NumPorts1)
printk(", io 0x%04x-0x%04x", link->io.BasePort1,
link->io.BasePort1+link->io.NumPorts1-1);
printk(" & 0x%04x-0x%04x", link->io.BasePort2,
link->io.BasePort2+link->io.NumPorts2-1);
if (link->win)
- printk(", mem 0x%06lx-0x%06lx", req.Base,
- req.Base+req.Size-1);
+ printk(", mem 0x%06lx-0x%06lx", req->Base,
+ req->Base+req->Size-1);
printk("\n");
-
- link->state &= ~DEV_CONFIG_PENDING;
- return;
-
- cs_failed:
- cs_error(link->handle, last_fn, last_ret);
+ kfree(req);
+ return 0;
+
+ failed:
airo_release(link);
-
+ kfree(req);
+ return -ENODEV;
} /* airo_config */
/*======================================================================
-
+
After a card is removed, airo_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 airo_release(dev_link_t *link)
+static void airo_release(struct pcmcia_device *link)
{
- DEBUG(0, "airo_release(0x%p)\n", link);
-
- /* Unlink the device chain */
- link->dev = NULL;
-
- /*
- In a normal driver, additional code may be needed to release
- other kernel data structures associated with this device.
- */
-
- /* Don't bother checking to see if these succeed or not */
- if (link->win)
- pcmcia_release_window(link->win);
- 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;
+ dev_dbg(&link->dev, "airo_release\n");
+ pcmcia_disable_device(link);
}
-static int airo_suspend(struct pcmcia_device *p_dev)
+static int airo_suspend(struct pcmcia_device *link)
{
- dev_link_t *link = dev_to_instance(p_dev);
local_info_t *local = link->priv;
- link->state |= DEV_SUSPEND;
- if (link->state & DEV_CONFIG) {
- netif_device_detach(local->eth_dev);
- pcmcia_release_configuration(link->handle);
- }
+ netif_device_detach(local->eth_dev);
return 0;
}
-static int airo_resume(struct pcmcia_device *p_dev)
+static int airo_resume(struct pcmcia_device *link)
{
- dev_link_t *link = dev_to_instance(p_dev);
local_info_t *local = link->priv;
- link->state &= ~DEV_SUSPEND;
- if (link->state & DEV_CONFIG) {
- pcmcia_request_configuration(link->handle, &link->conf);
+ if (link->open) {
reset_airo_card(local->eth_dev);
netif_device_attach(local->eth_dev);
}
.drv = {
.name = "airo_cs",
},
- .probe = airo_attach,
+ .probe = airo_probe,
.remove = airo_detach,
.id_table = airo_ids,
.suspend = airo_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(airo_cs_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff