*
* Copyright (C) 2000, David Gibson, Linuxcare Australia.
* (C) Copyright David Gibson, IBM Corp. 2001-2003.
- *
+ *
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License
#include "hermes.h"
-MODULE_DESCRIPTION("Low-level driver helper for Lucent Hermes chipset and Prism II HFA384x wireless MAC controller");
-MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>"
- " & David Gibson <hermes@gibson.dropbear.id.au>");
-MODULE_LICENSE("Dual MPL/GPL");
-
/* These are maximum timeouts. Most often, card wil react much faster */
#define CMD_BUSY_TIMEOUT (100) /* In iterations of ~1us */
#define CMD_INIT_TIMEOUT (50000) /* in iterations of ~10us */
*/
#define DMSG(stuff...) do {printk(KERN_DEBUG "hermes @ %p: " , hw->iobase); \
- printk(stuff);} while (0)
+ printk(stuff); } while (0)
#undef HERMES_DEBUG
#ifdef HERMES_DEBUG
#include <stdarg.h>
-#define DEBUG(lvl, stuff...) if ( (lvl) <= HERMES_DEBUG) DMSG(stuff)
+#define DEBUG(lvl, stuff...) if ((lvl) <= HERMES_DEBUG) DMSG(stuff)
#else /* ! HERMES_DEBUG */
/* First wait for the command register to unbusy */
reg = hermes_read_regn(hw, CMD);
- while ( (reg & HERMES_CMD_BUSY) && k ) {
+ while ((reg & HERMES_CMD_BUSY) && k) {
k--;
udelay(1);
reg = hermes_read_regn(hw, CMD);
}
- if (reg & HERMES_CMD_BUSY) {
+ if (reg & HERMES_CMD_BUSY)
return -EBUSY;
- }
hermes_write_regn(hw, PARAM2, param2);
hermes_write_regn(hw, PARAM1, param1);
hermes_write_regn(hw, PARAM0, param0);
hermes_write_regn(hw, CMD, cmd);
-
+
return 0;
}
hermes_write_regn(hw, EVACK, 0xffff);
/* Normally it's a "can't happen" for the command register to
- be busy when we go to issue a command because we are
- serializing all commands. However we want to have some
- chance of resetting the card even if it gets into a stupid
- state, so we actually wait to see if the command register
- will unbusy itself here. */
+ be busy when we go to issue a command because we are
+ serializing all commands. However we want to have some
+ chance of resetting the card even if it gets into a stupid
+ state, so we actually wait to see if the command register
+ will unbusy itself here. */
k = CMD_BUSY_TIMEOUT;
reg = hermes_read_regn(hw, CMD);
while (k && (reg & HERMES_CMD_BUSY)) {
- if (reg == 0xffff) /* Special case - the card has probably been removed,
- so don't wait for the timeout */
+ if (reg == 0xffff) /* Special case - the card has probably been
+ removed, so don't wait for the timeout */
return -ENODEV;
k--;
udelay(1);
reg = hermes_read_regn(hw, CMD);
}
-
+
/* No need to explicitly handle the timeout - if we've timed
out hermes_issue_cmd() will probably return -EBUSY below */
/* Issue a command to the chip, and (busy!) wait for it to
* complete.
*
- * Returns: < 0 on internal error, 0 on success, > 0 on error returned by the firmware
+ * Returns:
+ * < 0 on internal error
+ * 0 on success
+ * > 0 on error returned by the firmware
*
* Callable from any context, but locking is your problem. */
int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0,
err = hermes_issue_cmd(hw, cmd, parm0, 0, 0);
if (err) {
- if (! hermes_present(hw)) {
+ if (!hermes_present(hw)) {
if (net_ratelimit())
printk(KERN_WARNING "hermes @ %p: "
"Card removed while issuing command "
"0x%04x.\n", hw->iobase, cmd);
err = -ENODEV;
- } else
+ } else
if (net_ratelimit())
printk(KERN_ERR "hermes @ %p: "
"Error %d issuing command 0x%04x.\n",
reg = hermes_read_regn(hw, EVSTAT);
k = CMD_COMPL_TIMEOUT;
- while ( (! (reg & HERMES_EV_CMD)) && k) {
+ while ((!(reg & HERMES_EV_CMD)) && k) {
k--;
udelay(10);
reg = hermes_read_regn(hw, EVSTAT);
}
- if (! hermes_present(hw)) {
+ if (!hermes_present(hw)) {
printk(KERN_WARNING "hermes @ %p: Card removed "
"while waiting for command 0x%04x completion.\n",
hw->iobase, cmd);
err = -ENODEV;
goto out;
}
-
- if (! (reg & HERMES_EV_CMD)) {
+
+ if (!(reg & HERMES_EV_CMD)) {
printk(KERN_ERR "hermes @ %p: Timeout waiting for "
"command 0x%04x completion.\n", hw->iobase, cmd);
err = -ETIMEDOUT;
int err = 0;
int k;
u16 reg;
-
- if ( (size < HERMES_ALLOC_LEN_MIN) || (size > HERMES_ALLOC_LEN_MAX) )
+
+ if ((size < HERMES_ALLOC_LEN_MIN) || (size > HERMES_ALLOC_LEN_MAX))
return -EINVAL;
err = hermes_docmd_wait(hw, HERMES_CMD_ALLOC, size, NULL);
- if (err) {
+ if (err)
return err;
- }
reg = hermes_read_regn(hw, EVSTAT);
k = ALLOC_COMPL_TIMEOUT;
- while ( (! (reg & HERMES_EV_ALLOC)) && k) {
+ while ((!(reg & HERMES_EV_ALLOC)) && k) {
k--;
udelay(10);
reg = hermes_read_regn(hw, EVSTAT);
}
-
- if (! hermes_present(hw)) {
+
+ if (!hermes_present(hw)) {
printk(KERN_WARNING "hermes @ %p: "
"Card removed waiting for frame allocation.\n",
hw->iobase);
return -ENODEV;
}
-
- if (! (reg & HERMES_EV_ALLOC)) {
+
+ if (!(reg & HERMES_EV_ALLOC)) {
printk(KERN_ERR "hermes @ %p: "
"Timeout waiting for frame allocation\n",
hw->iobase);
*fid = hermes_read_regn(hw, ALLOCFID);
hermes_write_regn(hw, EVACK, HERMES_EV_ALLOC);
-
+
return 0;
}
EXPORT_SYMBOL(hermes_allocate);
/* Set up a BAP to read a particular chunk of data from card's internal buffer.
*
- * Returns: < 0 on internal failure (errno), 0 on success, >0 on error
+ * Returns:
+ * < 0 on internal failure (errno)
+ * 0 on success
+ * > 0 on error
* from firmware
*
* Callable from any context */
u16 reg;
/* Paranoia.. */
- if ( (offset > HERMES_BAP_OFFSET_MAX) || (offset % 2) )
+ if ((offset > HERMES_BAP_OFFSET_MAX) || (offset % 2))
return -EINVAL;
k = HERMES_BAP_BUSY_TIMEOUT;
/* Wait for the BAP to be ready */
k = HERMES_BAP_BUSY_TIMEOUT;
reg = hermes_read_reg(hw, oreg);
- while ( (reg & (HERMES_OFFSET_BUSY | HERMES_OFFSET_ERR)) && k) {
+ while ((reg & (HERMES_OFFSET_BUSY | HERMES_OFFSET_ERR)) && k) {
k--;
udelay(1);
reg = hermes_read_reg(hw, oreg);
(reg & HERMES_OFFSET_BUSY) ? "timeout" : "error",
reg, id, offset);
- if (reg & HERMES_OFFSET_BUSY) {
+ if (reg & HERMES_OFFSET_BUSY)
return -ETIMEDOUT;
- }
return -EIO; /* error or wrong offset */
}
* BAP. Synchronization/serialization is the caller's problem. len
* must be even.
*
- * Returns: < 0 on internal failure (errno), 0 on success, > 0 on error from firmware
+ * Returns:
+ * < 0 on internal failure (errno)
+ * 0 on success
+ * > 0 on error from firmware
*/
int hermes_bap_pread(hermes_t *hw, int bap, void *buf, int len,
u16 id, u16 offset)
int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
int err = 0;
- if ( (len < 0) || (len % 2) )
+ if ((len < 0) || (len % 2))
return -EINVAL;
err = hermes_bap_seek(hw, bap, id, offset);
/* Write a block of data to the chip's buffer, via the
* BAP. Synchronization/serialization is the caller's problem.
*
- * Returns: < 0 on internal failure (errno), 0 on success, > 0 on error from firmware
+ * Returns:
+ * < 0 on internal failure (errno)
+ * 0 on success
+ * > 0 on error from firmware
*/
int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, int len,
u16 id, u16 offset)
err = hermes_bap_seek(hw, bap, id, offset);
if (err)
goto out;
-
+
/* Actually do the transfer */
hermes_write_bytes(hw, dreg, buf, len);
- out:
+ out:
return err;
}
EXPORT_SYMBOL(hermes_bap_pwrite);
u16 rlength, rtype;
unsigned nwords;
- if ( (bufsize < 0) || (bufsize % 2) )
+ if (bufsize % 2)
return -EINVAL;
err = hermes_docmd_wait(hw, HERMES_CMD_ACCESS, rid, NULL);
rlength = hermes_read_reg(hw, dreg);
- if (! rlength)
+ if (!rlength)
return -ENODATA;
rtype = hermes_read_reg(hw, dreg);
}
EXPORT_SYMBOL(hermes_read_ltv);
-int hermes_write_ltv(hermes_t *hw, int bap, u16 rid,
+int hermes_write_ltv(hermes_t *hw, int bap, u16 rid,
u16 length, const void *value)
{
int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
return err;
}
EXPORT_SYMBOL(hermes_write_ltv);
-
-static int __init init_hermes(void)
-{
- return 0;
-}
-
-static void __exit exit_hermes(void)
-{
-}
-
-module_init(init_hermes);
-module_exit(exit_hermes);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff