![Tejun Heo](/assets/img/avatar_default.png)
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
696 lines
18 KiB
C
696 lines
18 KiB
C
/*
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Broadcom B43legacy wireless driver
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PIO Transmission
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Copyright (c) 2005 Michael Buesch <mb@bu3sch.de>
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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 as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "b43legacy.h"
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#include "pio.h"
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#include "main.h"
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#include "xmit.h"
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#include <linux/delay.h>
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#include <linux/slab.h>
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static void tx_start(struct b43legacy_pioqueue *queue)
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{
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b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
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B43legacy_PIO_TXCTL_INIT);
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}
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static void tx_octet(struct b43legacy_pioqueue *queue,
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u8 octet)
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{
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if (queue->need_workarounds) {
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b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, octet);
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b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
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B43legacy_PIO_TXCTL_WRITELO);
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} else {
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b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
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B43legacy_PIO_TXCTL_WRITELO);
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b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, octet);
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}
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}
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static u16 tx_get_next_word(const u8 *txhdr,
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const u8 *packet,
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size_t txhdr_size,
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unsigned int *pos)
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{
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const u8 *source;
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unsigned int i = *pos;
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u16 ret;
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if (i < txhdr_size)
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source = txhdr;
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else {
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source = packet;
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i -= txhdr_size;
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}
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ret = le16_to_cpu(*((__le16 *)(source + i)));
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*pos += 2;
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return ret;
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}
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static void tx_data(struct b43legacy_pioqueue *queue,
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u8 *txhdr,
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const u8 *packet,
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unsigned int octets)
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{
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u16 data;
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unsigned int i = 0;
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if (queue->need_workarounds) {
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data = tx_get_next_word(txhdr, packet,
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sizeof(struct b43legacy_txhdr_fw3), &i);
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b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, data);
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}
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b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
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B43legacy_PIO_TXCTL_WRITELO |
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B43legacy_PIO_TXCTL_WRITEHI);
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while (i < octets - 1) {
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data = tx_get_next_word(txhdr, packet,
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sizeof(struct b43legacy_txhdr_fw3), &i);
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b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, data);
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}
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if (octets % 2)
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tx_octet(queue, packet[octets -
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sizeof(struct b43legacy_txhdr_fw3) - 1]);
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}
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static void tx_complete(struct b43legacy_pioqueue *queue,
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struct sk_buff *skb)
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{
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if (queue->need_workarounds) {
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b43legacy_pio_write(queue, B43legacy_PIO_TXDATA,
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skb->data[skb->len - 1]);
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b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
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B43legacy_PIO_TXCTL_WRITELO |
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B43legacy_PIO_TXCTL_COMPLETE);
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} else
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b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
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B43legacy_PIO_TXCTL_COMPLETE);
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}
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static u16 generate_cookie(struct b43legacy_pioqueue *queue,
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struct b43legacy_pio_txpacket *packet)
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{
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u16 cookie = 0x0000;
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int packetindex;
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/* We use the upper 4 bits for the PIO
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* controller ID and the lower 12 bits
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* for the packet index (in the cache).
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*/
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switch (queue->mmio_base) {
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case B43legacy_MMIO_PIO1_BASE:
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break;
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case B43legacy_MMIO_PIO2_BASE:
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cookie = 0x1000;
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break;
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case B43legacy_MMIO_PIO3_BASE:
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cookie = 0x2000;
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break;
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case B43legacy_MMIO_PIO4_BASE:
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cookie = 0x3000;
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break;
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default:
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B43legacy_WARN_ON(1);
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}
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packetindex = pio_txpacket_getindex(packet);
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B43legacy_WARN_ON(!(((u16)packetindex & 0xF000) == 0x0000));
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cookie |= (u16)packetindex;
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return cookie;
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}
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static
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struct b43legacy_pioqueue *parse_cookie(struct b43legacy_wldev *dev,
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u16 cookie,
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struct b43legacy_pio_txpacket **packet)
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{
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struct b43legacy_pio *pio = &dev->pio;
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struct b43legacy_pioqueue *queue = NULL;
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int packetindex;
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switch (cookie & 0xF000) {
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case 0x0000:
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queue = pio->queue0;
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break;
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case 0x1000:
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queue = pio->queue1;
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break;
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case 0x2000:
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queue = pio->queue2;
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break;
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case 0x3000:
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queue = pio->queue3;
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break;
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default:
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B43legacy_WARN_ON(1);
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}
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packetindex = (cookie & 0x0FFF);
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B43legacy_WARN_ON(!(packetindex >= 0 && packetindex
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< B43legacy_PIO_MAXTXPACKETS));
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*packet = &(queue->tx_packets_cache[packetindex]);
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return queue;
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}
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union txhdr_union {
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struct b43legacy_txhdr_fw3 txhdr_fw3;
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};
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static int pio_tx_write_fragment(struct b43legacy_pioqueue *queue,
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struct sk_buff *skb,
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struct b43legacy_pio_txpacket *packet,
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size_t txhdr_size)
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{
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union txhdr_union txhdr_data;
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u8 *txhdr = NULL;
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unsigned int octets;
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int err;
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txhdr = (u8 *)(&txhdr_data.txhdr_fw3);
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B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags != 0);
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err = b43legacy_generate_txhdr(queue->dev,
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txhdr, skb->data, skb->len,
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IEEE80211_SKB_CB(skb),
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generate_cookie(queue, packet));
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if (err)
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return err;
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tx_start(queue);
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octets = skb->len + txhdr_size;
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if (queue->need_workarounds)
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octets--;
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tx_data(queue, txhdr, (u8 *)skb->data, octets);
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tx_complete(queue, skb);
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return 0;
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}
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static void free_txpacket(struct b43legacy_pio_txpacket *packet,
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int irq_context)
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{
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struct b43legacy_pioqueue *queue = packet->queue;
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if (packet->skb) {
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if (irq_context)
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dev_kfree_skb_irq(packet->skb);
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else
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dev_kfree_skb(packet->skb);
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}
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list_move(&packet->list, &queue->txfree);
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queue->nr_txfree++;
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}
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static int pio_tx_packet(struct b43legacy_pio_txpacket *packet)
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{
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struct b43legacy_pioqueue *queue = packet->queue;
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struct sk_buff *skb = packet->skb;
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u16 octets;
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int err;
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octets = (u16)skb->len + sizeof(struct b43legacy_txhdr_fw3);
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if (queue->tx_devq_size < octets) {
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b43legacywarn(queue->dev->wl, "PIO queue too small. "
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"Dropping packet.\n");
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/* Drop it silently (return success) */
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free_txpacket(packet, 1);
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return 0;
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}
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B43legacy_WARN_ON(queue->tx_devq_packets >
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B43legacy_PIO_MAXTXDEVQPACKETS);
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B43legacy_WARN_ON(queue->tx_devq_used > queue->tx_devq_size);
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/* Check if there is sufficient free space on the device
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* TX queue. If not, return and let the TX tasklet
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* retry later.
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*/
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if (queue->tx_devq_packets == B43legacy_PIO_MAXTXDEVQPACKETS)
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return -EBUSY;
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if (queue->tx_devq_used + octets > queue->tx_devq_size)
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return -EBUSY;
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/* Now poke the device. */
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err = pio_tx_write_fragment(queue, skb, packet,
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sizeof(struct b43legacy_txhdr_fw3));
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if (unlikely(err == -ENOKEY)) {
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/* Drop this packet, as we don't have the encryption key
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* anymore and must not transmit it unencrypted. */
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free_txpacket(packet, 1);
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return 0;
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}
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/* Account for the packet size.
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* (We must not overflow the device TX queue)
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*/
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queue->tx_devq_packets++;
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queue->tx_devq_used += octets;
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/* Transmission started, everything ok, move the
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* packet to the txrunning list.
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*/
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list_move_tail(&packet->list, &queue->txrunning);
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return 0;
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}
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static void tx_tasklet(unsigned long d)
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{
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struct b43legacy_pioqueue *queue = (struct b43legacy_pioqueue *)d;
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struct b43legacy_wldev *dev = queue->dev;
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unsigned long flags;
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struct b43legacy_pio_txpacket *packet, *tmp_packet;
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int err;
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u16 txctl;
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spin_lock_irqsave(&dev->wl->irq_lock, flags);
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if (queue->tx_frozen)
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goto out_unlock;
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txctl = b43legacy_pio_read(queue, B43legacy_PIO_TXCTL);
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if (txctl & B43legacy_PIO_TXCTL_SUSPEND)
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goto out_unlock;
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list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list) {
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/* Try to transmit the packet. This can fail, if
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* the device queue is full. In case of failure, the
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* packet is left in the txqueue.
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* If transmission succeed, the packet is moved to txrunning.
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* If it is impossible to transmit the packet, it
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* is dropped.
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*/
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err = pio_tx_packet(packet);
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if (err)
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break;
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}
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out_unlock:
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spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
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}
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static void setup_txqueues(struct b43legacy_pioqueue *queue)
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{
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struct b43legacy_pio_txpacket *packet;
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int i;
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queue->nr_txfree = B43legacy_PIO_MAXTXPACKETS;
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for (i = 0; i < B43legacy_PIO_MAXTXPACKETS; i++) {
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packet = &(queue->tx_packets_cache[i]);
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packet->queue = queue;
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INIT_LIST_HEAD(&packet->list);
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list_add(&packet->list, &queue->txfree);
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}
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}
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static
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struct b43legacy_pioqueue *b43legacy_setup_pioqueue(struct b43legacy_wldev *dev,
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u16 pio_mmio_base)
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{
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struct b43legacy_pioqueue *queue;
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u32 value;
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u16 qsize;
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queue = kzalloc(sizeof(*queue), GFP_KERNEL);
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if (!queue)
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goto out;
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queue->dev = dev;
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queue->mmio_base = pio_mmio_base;
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queue->need_workarounds = (dev->dev->id.revision < 3);
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INIT_LIST_HEAD(&queue->txfree);
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INIT_LIST_HEAD(&queue->txqueue);
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INIT_LIST_HEAD(&queue->txrunning);
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tasklet_init(&queue->txtask, tx_tasklet,
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(unsigned long)queue);
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value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
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value &= ~B43legacy_MACCTL_BE;
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b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value);
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qsize = b43legacy_read16(dev, queue->mmio_base
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+ B43legacy_PIO_TXQBUFSIZE);
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if (qsize == 0) {
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b43legacyerr(dev->wl, "This card does not support PIO "
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"operation mode. Please use DMA mode "
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"(module parameter pio=0).\n");
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goto err_freequeue;
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}
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if (qsize <= B43legacy_PIO_TXQADJUST) {
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b43legacyerr(dev->wl, "PIO tx device-queue too small (%u)\n",
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qsize);
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goto err_freequeue;
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}
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qsize -= B43legacy_PIO_TXQADJUST;
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queue->tx_devq_size = qsize;
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setup_txqueues(queue);
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out:
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return queue;
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err_freequeue:
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kfree(queue);
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queue = NULL;
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goto out;
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}
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static void cancel_transfers(struct b43legacy_pioqueue *queue)
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{
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struct b43legacy_pio_txpacket *packet, *tmp_packet;
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tasklet_disable(&queue->txtask);
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list_for_each_entry_safe(packet, tmp_packet, &queue->txrunning, list)
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free_txpacket(packet, 0);
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list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list)
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free_txpacket(packet, 0);
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}
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static void b43legacy_destroy_pioqueue(struct b43legacy_pioqueue *queue)
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{
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if (!queue)
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return;
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cancel_transfers(queue);
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kfree(queue);
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}
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void b43legacy_pio_free(struct b43legacy_wldev *dev)
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{
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struct b43legacy_pio *pio;
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if (!b43legacy_using_pio(dev))
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return;
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pio = &dev->pio;
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b43legacy_destroy_pioqueue(pio->queue3);
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pio->queue3 = NULL;
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b43legacy_destroy_pioqueue(pio->queue2);
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pio->queue2 = NULL;
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b43legacy_destroy_pioqueue(pio->queue1);
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pio->queue1 = NULL;
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b43legacy_destroy_pioqueue(pio->queue0);
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pio->queue0 = NULL;
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}
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int b43legacy_pio_init(struct b43legacy_wldev *dev)
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{
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struct b43legacy_pio *pio = &dev->pio;
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struct b43legacy_pioqueue *queue;
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int err = -ENOMEM;
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queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO1_BASE);
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if (!queue)
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goto out;
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pio->queue0 = queue;
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queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO2_BASE);
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if (!queue)
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goto err_destroy0;
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pio->queue1 = queue;
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queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO3_BASE);
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if (!queue)
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goto err_destroy1;
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pio->queue2 = queue;
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queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO4_BASE);
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if (!queue)
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goto err_destroy2;
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pio->queue3 = queue;
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if (dev->dev->id.revision < 3)
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dev->irq_mask |= B43legacy_IRQ_PIO_WORKAROUND;
|
|
|
|
b43legacydbg(dev->wl, "PIO initialized\n");
|
|
err = 0;
|
|
out:
|
|
return err;
|
|
|
|
err_destroy2:
|
|
b43legacy_destroy_pioqueue(pio->queue2);
|
|
pio->queue2 = NULL;
|
|
err_destroy1:
|
|
b43legacy_destroy_pioqueue(pio->queue1);
|
|
pio->queue1 = NULL;
|
|
err_destroy0:
|
|
b43legacy_destroy_pioqueue(pio->queue0);
|
|
pio->queue0 = NULL;
|
|
goto out;
|
|
}
|
|
|
|
int b43legacy_pio_tx(struct b43legacy_wldev *dev,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct b43legacy_pioqueue *queue = dev->pio.queue1;
|
|
struct b43legacy_pio_txpacket *packet;
|
|
|
|
B43legacy_WARN_ON(queue->tx_suspended);
|
|
B43legacy_WARN_ON(list_empty(&queue->txfree));
|
|
|
|
packet = list_entry(queue->txfree.next, struct b43legacy_pio_txpacket,
|
|
list);
|
|
packet->skb = skb;
|
|
|
|
list_move_tail(&packet->list, &queue->txqueue);
|
|
queue->nr_txfree--;
|
|
B43legacy_WARN_ON(queue->nr_txfree >= B43legacy_PIO_MAXTXPACKETS);
|
|
|
|
tasklet_schedule(&queue->txtask);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
|
|
const struct b43legacy_txstatus *status)
|
|
{
|
|
struct b43legacy_pioqueue *queue;
|
|
struct b43legacy_pio_txpacket *packet;
|
|
struct ieee80211_tx_info *info;
|
|
int retry_limit;
|
|
|
|
queue = parse_cookie(dev, status->cookie, &packet);
|
|
B43legacy_WARN_ON(!queue);
|
|
|
|
if (!packet->skb)
|
|
return;
|
|
|
|
queue->tx_devq_packets--;
|
|
queue->tx_devq_used -= (packet->skb->len +
|
|
sizeof(struct b43legacy_txhdr_fw3));
|
|
|
|
info = IEEE80211_SKB_CB(packet->skb);
|
|
|
|
/* preserve the confiured retry limit before clearing the status
|
|
* The xmit function has overwritten the rc's value with the actual
|
|
* retry limit done by the hardware */
|
|
retry_limit = info->status.rates[0].count;
|
|
ieee80211_tx_info_clear_status(info);
|
|
|
|
if (status->acked)
|
|
info->flags |= IEEE80211_TX_STAT_ACK;
|
|
|
|
if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
|
|
/*
|
|
* If the short retries (RTS, not data frame) have exceeded
|
|
* the limit, the hw will not have tried the selected rate,
|
|
* but will have used the fallback rate instead.
|
|
* Don't let the rate control count attempts for the selected
|
|
* rate in this case, otherwise the statistics will be off.
|
|
*/
|
|
info->status.rates[0].count = 0;
|
|
info->status.rates[1].count = status->frame_count;
|
|
} else {
|
|
if (status->frame_count > retry_limit) {
|
|
info->status.rates[0].count = retry_limit;
|
|
info->status.rates[1].count = status->frame_count -
|
|
retry_limit;
|
|
|
|
} else {
|
|
info->status.rates[0].count = status->frame_count;
|
|
info->status.rates[1].idx = -1;
|
|
}
|
|
}
|
|
ieee80211_tx_status_irqsafe(dev->wl->hw, packet->skb);
|
|
packet->skb = NULL;
|
|
|
|
free_txpacket(packet, 1);
|
|
/* If there are packets on the txqueue, poke the tasklet
|
|
* to transmit them.
|
|
*/
|
|
if (!list_empty(&queue->txqueue))
|
|
tasklet_schedule(&queue->txtask);
|
|
}
|
|
|
|
static void pio_rx_error(struct b43legacy_pioqueue *queue,
|
|
int clear_buffers,
|
|
const char *error)
|
|
{
|
|
int i;
|
|
|
|
b43legacyerr(queue->dev->wl, "PIO RX error: %s\n", error);
|
|
b43legacy_pio_write(queue, B43legacy_PIO_RXCTL,
|
|
B43legacy_PIO_RXCTL_READY);
|
|
if (clear_buffers) {
|
|
B43legacy_WARN_ON(queue->mmio_base != B43legacy_MMIO_PIO1_BASE);
|
|
for (i = 0; i < 15; i++) {
|
|
/* Dummy read. */
|
|
b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
|
|
}
|
|
}
|
|
}
|
|
|
|
void b43legacy_pio_rx(struct b43legacy_pioqueue *queue)
|
|
{
|
|
__le16 preamble[21] = { 0 };
|
|
struct b43legacy_rxhdr_fw3 *rxhdr;
|
|
u16 tmp;
|
|
u16 len;
|
|
u16 macstat;
|
|
int i;
|
|
int preamble_readwords;
|
|
struct sk_buff *skb;
|
|
|
|
tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXCTL);
|
|
if (!(tmp & B43legacy_PIO_RXCTL_DATAAVAILABLE))
|
|
return;
|
|
b43legacy_pio_write(queue, B43legacy_PIO_RXCTL,
|
|
B43legacy_PIO_RXCTL_DATAAVAILABLE);
|
|
|
|
for (i = 0; i < 10; i++) {
|
|
tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXCTL);
|
|
if (tmp & B43legacy_PIO_RXCTL_READY)
|
|
goto data_ready;
|
|
udelay(10);
|
|
}
|
|
b43legacydbg(queue->dev->wl, "PIO RX timed out\n");
|
|
return;
|
|
data_ready:
|
|
|
|
len = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
|
|
if (unlikely(len > 0x700)) {
|
|
pio_rx_error(queue, 0, "len > 0x700");
|
|
return;
|
|
}
|
|
if (unlikely(len == 0 && queue->mmio_base !=
|
|
B43legacy_MMIO_PIO4_BASE)) {
|
|
pio_rx_error(queue, 0, "len == 0");
|
|
return;
|
|
}
|
|
preamble[0] = cpu_to_le16(len);
|
|
if (queue->mmio_base == B43legacy_MMIO_PIO4_BASE)
|
|
preamble_readwords = 14 / sizeof(u16);
|
|
else
|
|
preamble_readwords = 18 / sizeof(u16);
|
|
for (i = 0; i < preamble_readwords; i++) {
|
|
tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
|
|
preamble[i + 1] = cpu_to_le16(tmp);
|
|
}
|
|
rxhdr = (struct b43legacy_rxhdr_fw3 *)preamble;
|
|
macstat = le16_to_cpu(rxhdr->mac_status);
|
|
if (macstat & B43legacy_RX_MAC_FCSERR) {
|
|
pio_rx_error(queue,
|
|
(queue->mmio_base == B43legacy_MMIO_PIO1_BASE),
|
|
"Frame FCS error");
|
|
return;
|
|
}
|
|
if (queue->mmio_base == B43legacy_MMIO_PIO4_BASE) {
|
|
/* We received an xmit status. */
|
|
struct b43legacy_hwtxstatus *hw;
|
|
|
|
hw = (struct b43legacy_hwtxstatus *)(preamble + 1);
|
|
b43legacy_handle_hwtxstatus(queue->dev, hw);
|
|
|
|
return;
|
|
}
|
|
|
|
skb = dev_alloc_skb(len);
|
|
if (unlikely(!skb)) {
|
|
pio_rx_error(queue, 1, "OOM");
|
|
return;
|
|
}
|
|
skb_put(skb, len);
|
|
for (i = 0; i < len - 1; i += 2) {
|
|
tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
|
|
*((__le16 *)(skb->data + i)) = cpu_to_le16(tmp);
|
|
}
|
|
if (len % 2) {
|
|
tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA);
|
|
skb->data[len - 1] = (tmp & 0x00FF);
|
|
}
|
|
b43legacy_rx(queue->dev, skb, rxhdr);
|
|
}
|
|
|
|
void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue)
|
|
{
|
|
b43legacy_power_saving_ctl_bits(queue->dev, -1, 1);
|
|
b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
|
|
b43legacy_pio_read(queue, B43legacy_PIO_TXCTL)
|
|
| B43legacy_PIO_TXCTL_SUSPEND);
|
|
}
|
|
|
|
void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue)
|
|
{
|
|
b43legacy_pio_write(queue, B43legacy_PIO_TXCTL,
|
|
b43legacy_pio_read(queue, B43legacy_PIO_TXCTL)
|
|
& ~B43legacy_PIO_TXCTL_SUSPEND);
|
|
b43legacy_power_saving_ctl_bits(queue->dev, -1, -1);
|
|
tasklet_schedule(&queue->txtask);
|
|
}
|
|
|
|
void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev)
|
|
{
|
|
struct b43legacy_pio *pio;
|
|
|
|
B43legacy_WARN_ON(!b43legacy_using_pio(dev));
|
|
pio = &dev->pio;
|
|
pio->queue0->tx_frozen = 1;
|
|
pio->queue1->tx_frozen = 1;
|
|
pio->queue2->tx_frozen = 1;
|
|
pio->queue3->tx_frozen = 1;
|
|
}
|
|
|
|
void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev)
|
|
{
|
|
struct b43legacy_pio *pio;
|
|
|
|
B43legacy_WARN_ON(!b43legacy_using_pio(dev));
|
|
pio = &dev->pio;
|
|
pio->queue0->tx_frozen = 0;
|
|
pio->queue1->tx_frozen = 0;
|
|
pio->queue2->tx_frozen = 0;
|
|
pio->queue3->tx_frozen = 0;
|
|
if (!list_empty(&pio->queue0->txqueue))
|
|
tasklet_schedule(&pio->queue0->txtask);
|
|
if (!list_empty(&pio->queue1->txqueue))
|
|
tasklet_schedule(&pio->queue1->txtask);
|
|
if (!list_empty(&pio->queue2->txqueue))
|
|
tasklet_schedule(&pio->queue2->txtask);
|
|
if (!list_empty(&pio->queue3->txqueue))
|
|
tasklet_schedule(&pio->queue3->txtask);
|
|
}
|