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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-15 20:40:05 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-15 20:40:05 +0400 |
commit | 2ed0e21b30b53d3a94e204196e523e6c8f732b56 (patch) | |
tree | de2635426477d86338a9469ce09ba0626052288f /drivers/net/wireless/ath/ar9170/cmd.c | |
parent | 0fa213310cd8fa7a51071cdcf130e26fa56e9549 (diff) | |
parent | 9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (diff) | |
download | linux-2ed0e21b30b53d3a94e204196e523e6c8f732b56.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1244 commits)
pkt_sched: Rename PSCHED_US2NS and PSCHED_NS2US
ipv4: Fix fib_trie rebalancing
Bluetooth: Fix issue with uninitialized nsh.type in DTL-1 driver
Bluetooth: Fix Kconfig issue with RFKILL integration
PIM-SM: namespace changes
ipv4: update ARPD help text
net: use a deferred timer in rt_check_expire
ieee802154: fix kconfig bool/tristate muckup
bonding: initialization rework
bonding: use is_zero_ether_addr
bonding: network device names are case sensative
bonding: elminate bad refcount code
bonding: fix style issues
bonding: fix destructor
bonding: remove bonding read/write semaphore
bonding: initialize before registration
bonding: bond_create always called with default parameters
x_tables: Convert printk to pr_err
netfilter: conntrack: optional reliable conntrack event delivery
list_nulls: add hlist_nulls_add_head and hlist_nulls_del
...
Diffstat (limited to 'drivers/net/wireless/ath/ar9170/cmd.c')
-rw-r--r-- | drivers/net/wireless/ath/ar9170/cmd.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ar9170/cmd.c b/drivers/net/wireless/ath/ar9170/cmd.c new file mode 100644 index 000000000000..f57a6200167b --- /dev/null +++ b/drivers/net/wireless/ath/ar9170/cmd.c @@ -0,0 +1,129 @@ +/* + * Atheros AR9170 driver + * + * Basic HW register/memory/command access functions + * + * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, see + * http://www.gnu.org/licenses/. + * + * This file incorporates work covered by the following copyright and + * permission notice: + * Copyright (c) 2007-2008 Atheros Communications, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "ar9170.h" +#include "cmd.h" + +int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len) +{ + int err; + + if (unlikely(!IS_ACCEPTING_CMD(ar))) + return 0; + + err = ar->exec_cmd(ar, AR9170_CMD_WMEM, len, (u8 *) data, 0, NULL); + if (err) + printk(KERN_DEBUG "%s: writing memory failed\n", + wiphy_name(ar->hw->wiphy)); + return err; +} + +int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val) +{ + __le32 buf[2] = { + cpu_to_le32(reg), + cpu_to_le32(val), + }; + int err; + + if (unlikely(!IS_ACCEPTING_CMD(ar))) + return 0; + + err = ar->exec_cmd(ar, AR9170_CMD_WREG, sizeof(buf), + (u8 *) buf, 0, NULL); + if (err) + printk(KERN_DEBUG "%s: writing reg %#x (val %#x) failed\n", + wiphy_name(ar->hw->wiphy), reg, val); + return err; +} + +static int ar9170_read_mreg(struct ar9170 *ar, int nregs, + const u32 *regs, u32 *out) +{ + int i, err; + __le32 *offs, *res; + + if (unlikely(!IS_ACCEPTING_CMD(ar))) + return 0; + + /* abuse "out" for the register offsets, must be same length */ + offs = (__le32 *)out; + for (i = 0; i < nregs; i++) + offs[i] = cpu_to_le32(regs[i]); + + /* also use the same buffer for the input */ + res = (__le32 *)out; + + err = ar->exec_cmd(ar, AR9170_CMD_RREG, + 4 * nregs, (u8 *)offs, + 4 * nregs, (u8 *)res); + if (err) + return err; + + /* convert result to cpu endian */ + for (i = 0; i < nregs; i++) + out[i] = le32_to_cpu(res[i]); + + return 0; +} + +int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val) +{ + return ar9170_read_mreg(ar, 1, ®, val); +} + +int ar9170_echo_test(struct ar9170 *ar, u32 v) +{ + __le32 echobuf = cpu_to_le32(v); + __le32 echores; + int err; + + if (unlikely(!IS_ACCEPTING_CMD(ar))) + return -ENODEV; + + err = ar->exec_cmd(ar, AR9170_CMD_ECHO, + 4, (u8 *)&echobuf, + 4, (u8 *)&echores); + if (err) + return err; + + if (echobuf != echores) + return -EINVAL; + + return 0; +} |