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c812ee2485
linux-next/drivers/net/wireless/b43/pio.c
Michael Buesch b96ab540c1 b43: Always use block-I/O for the PIO data registers 
On SDIO the PIO data register seems to be hardwired to LE. So
the MACCTL bit has no effect on the endianness.
So also use block-I/O for the last word of the packet. block-I/O is always LE.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Tested-by: Albert Herranz <albert_herranz@yahoo.es>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-09-29 17:25:15 -04:00

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/*
Broadcom B43 wireless driver
PIO data transfer
Copyright (c) 2005-2008 Michael Buesch <mb@bu3sch.de>
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, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "b43.h"
#include "pio.h"
#include "dma.h"
#include "main.h"
#include "xmit.h"
#include <linux/delay.h>
static u16 generate_cookie(struct b43_pio_txqueue *q,
struct b43_pio_txpacket *pack)
{
u16 cookie;
/* Use the upper 4 bits of the cookie as
* PIO controller ID and store the packet index number
* in the lower 12 bits.
* Note that the cookie must never be 0, as this
* is a special value used in RX path.
* It can also not be 0xFFFF because that is special
* for multicast frames.
*/
cookie = (((u16)q->index + 1) << 12);
cookie |= pack->index;
return cookie;
}
static
struct b43_pio_txqueue *parse_cookie(struct b43_wldev *dev,
u16 cookie,
struct b43_pio_txpacket **pack)
{
struct b43_pio *pio = &dev->pio;
struct b43_pio_txqueue *q = NULL;
unsigned int pack_index;
switch (cookie & 0xF000) {
case 0x1000:
q = pio->tx_queue_AC_BK;
break;
case 0x2000:
q = pio->tx_queue_AC_BE;
break;
case 0x3000:
q = pio->tx_queue_AC_VI;
break;
case 0x4000:
q = pio->tx_queue_AC_VO;
break;
case 0x5000:
q = pio->tx_queue_mcast;
break;
}
if (B43_WARN_ON(!q))
return NULL;
pack_index = (cookie & 0x0FFF);
if (B43_WARN_ON(pack_index >= ARRAY_SIZE(q->packets)))
return NULL;
*pack = &q->packets[pack_index];
return q;
}
static u16 index_to_pioqueue_base(struct b43_wldev *dev,
unsigned int index)
{
static const u16 bases[] = {
B43_MMIO_PIO_BASE0,
B43_MMIO_PIO_BASE1,
B43_MMIO_PIO_BASE2,
B43_MMIO_PIO_BASE3,
B43_MMIO_PIO_BASE4,
B43_MMIO_PIO_BASE5,
B43_MMIO_PIO_BASE6,
B43_MMIO_PIO_BASE7,
};
static const u16 bases_rev11[] = {
B43_MMIO_PIO11_BASE0,
B43_MMIO_PIO11_BASE1,
B43_MMIO_PIO11_BASE2,
B43_MMIO_PIO11_BASE3,
B43_MMIO_PIO11_BASE4,
B43_MMIO_PIO11_BASE5,
};
if (dev->dev->id.revision >= 11) {
B43_WARN_ON(index >= ARRAY_SIZE(bases_rev11));
return bases_rev11[index];
}
B43_WARN_ON(index >= ARRAY_SIZE(bases));
return bases[index];
}
static u16 pio_txqueue_offset(struct b43_wldev *dev)
{
if (dev->dev->id.revision >= 11)
return 0x18;
return 0;
}
static u16 pio_rxqueue_offset(struct b43_wldev *dev)
{
if (dev->dev->id.revision >= 11)
return 0x38;
return 8;
}
static struct b43_pio_txqueue *b43_setup_pioqueue_tx(struct b43_wldev *dev,
unsigned int index)
{
struct b43_pio_txqueue *q;
struct b43_pio_txpacket *p;
unsigned int i;
q = kzalloc(sizeof(*q), GFP_KERNEL);
if (!q)
return NULL;
q->dev = dev;
q->rev = dev->dev->id.revision;
q->mmio_base = index_to_pioqueue_base(dev, index) +
pio_txqueue_offset(dev);
q->index = index;
q->free_packet_slots = B43_PIO_MAX_NR_TXPACKETS;
if (q->rev >= 8) {
q->buffer_size = 1920; //FIXME this constant is wrong.
} else {
q->buffer_size = b43_piotx_read16(q, B43_PIO_TXQBUFSIZE);
q->buffer_size -= 80;
}
INIT_LIST_HEAD(&q->packets_list);
for (i = 0; i < ARRAY_SIZE(q->packets); i++) {
p = &(q->packets[i]);
INIT_LIST_HEAD(&p->list);
p->index = i;
p->queue = q;
list_add(&p->list, &q->packets_list);
}
return q;
}
static struct b43_pio_rxqueue *b43_setup_pioqueue_rx(struct b43_wldev *dev,
unsigned int index)
{
struct b43_pio_rxqueue *q;
q = kzalloc(sizeof(*q), GFP_KERNEL);
if (!q)
return NULL;
q->dev = dev;
q->rev = dev->dev->id.revision;
q->mmio_base = index_to_pioqueue_base(dev, index) +
pio_rxqueue_offset(dev);
/* Enable Direct FIFO RX (PIO) on the engine. */
b43_dma_direct_fifo_rx(dev, index, 1);
return q;
}
static void b43_pio_cancel_tx_packets(struct b43_pio_txqueue *q)
{
struct b43_pio_txpacket *pack;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(q->packets); i++) {
pack = &(q->packets[i]);
if (pack->skb) {
dev_kfree_skb_any(pack->skb);
pack->skb = NULL;
}
}
}
static void b43_destroy_pioqueue_tx(struct b43_pio_txqueue *q,
const char *name)
{
if (!q)
return;
b43_pio_cancel_tx_packets(q);
kfree(q);
}
static void b43_destroy_pioqueue_rx(struct b43_pio_rxqueue *q,
const char *name)
{
if (!q)
return;
kfree(q);
}
#define destroy_queue_tx(pio, queue) do { \
b43_destroy_pioqueue_tx((pio)->queue, __stringify(queue)); \
(pio)->queue = NULL; \
} while (0)
#define destroy_queue_rx(pio, queue) do { \
b43_destroy_pioqueue_rx((pio)->queue, __stringify(queue)); \
(pio)->queue = NULL; \
} while (0)
void b43_pio_free(struct b43_wldev *dev)
{
struct b43_pio *pio;
if (!b43_using_pio_transfers(dev))
return;
pio = &dev->pio;
destroy_queue_rx(pio, rx_queue);
destroy_queue_tx(pio, tx_queue_mcast);
destroy_queue_tx(pio, tx_queue_AC_VO);
destroy_queue_tx(pio, tx_queue_AC_VI);
destroy_queue_tx(pio, tx_queue_AC_BE);
destroy_queue_tx(pio, tx_queue_AC_BK);
}
int b43_pio_init(struct b43_wldev *dev)
{
struct b43_pio *pio = &dev->pio;
int err = -ENOMEM;
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
& ~B43_MACCTL_BE);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_RXPADOFF, 0);
pio->tx_queue_AC_BK = b43_setup_pioqueue_tx(dev, 0);
if (!pio->tx_queue_AC_BK)
goto out;
pio->tx_queue_AC_BE = b43_setup_pioqueue_tx(dev, 1);
if (!pio->tx_queue_AC_BE)
goto err_destroy_bk;
pio->tx_queue_AC_VI = b43_setup_pioqueue_tx(dev, 2);
if (!pio->tx_queue_AC_VI)
goto err_destroy_be;
pio->tx_queue_AC_VO = b43_setup_pioqueue_tx(dev, 3);
if (!pio->tx_queue_AC_VO)
goto err_destroy_vi;
pio->tx_queue_mcast = b43_setup_pioqueue_tx(dev, 4);
if (!pio->tx_queue_mcast)
goto err_destroy_vo;
pio->rx_queue = b43_setup_pioqueue_rx(dev, 0);
if (!pio->rx_queue)
goto err_destroy_mcast;
b43dbg(dev->wl, "PIO initialized\n");
err = 0;
out:
return err;
err_destroy_mcast:
destroy_queue_tx(pio, tx_queue_mcast);
err_destroy_vo:
destroy_queue_tx(pio, tx_queue_AC_VO);
err_destroy_vi:
destroy_queue_tx(pio, tx_queue_AC_VI);
err_destroy_be:
destroy_queue_tx(pio, tx_queue_AC_BE);
err_destroy_bk:
destroy_queue_tx(pio, tx_queue_AC_BK);
return err;
}
/* Static mapping of mac80211's queues (priorities) to b43 PIO queues. */
static struct b43_pio_txqueue *select_queue_by_priority(struct b43_wldev *dev,
u8 queue_prio)
{
struct b43_pio_txqueue *q;
if (dev->qos_enabled) {
/* 0 = highest priority */
switch (queue_prio) {
default:
B43_WARN_ON(1);
/* fallthrough */
case 0:
q = dev->pio.tx_queue_AC_VO;
break;
case 1:
q = dev->pio.tx_queue_AC_VI;
break;
case 2:
q = dev->pio.tx_queue_AC_BE;
break;
case 3:
q = dev->pio.tx_queue_AC_BK;
break;
}
} else
q = dev->pio.tx_queue_AC_BE;
return q;
}
static u16 tx_write_2byte_queue(struct b43_pio_txqueue *q,
u16 ctl,
const void *_data,
unsigned int data_len)
{
struct b43_wldev *dev = q->dev;
const u8 *data = _data;
ctl |= B43_PIO_TXCTL_WRITELO | B43_PIO_TXCTL_WRITEHI;
b43_piotx_write16(q, B43_PIO_TXCTL, ctl);
ssb_block_write(dev->dev, data, (data_len & ~1),
q->mmio_base + B43_PIO_TXDATA,
sizeof(u16));
if (data_len & 1) {
u8 tail[2] = { 0, };
/* Write the last byte. */
ctl &= ~B43_PIO_TXCTL_WRITEHI;
b43_piotx_write16(q, B43_PIO_TXCTL, ctl);
tail[0] = data[data_len - 1];
ssb_block_write(dev->dev, tail, 2,
q->mmio_base + B43_PIO_TXDATA,
sizeof(u16));
}
return ctl;
}
static void pio_tx_frame_2byte_queue(struct b43_pio_txpacket *pack,
const u8 *hdr, unsigned int hdrlen)
{
struct b43_pio_txqueue *q = pack->queue;
const char *frame = pack->skb->data;
unsigned int frame_len = pack->skb->len;
u16 ctl;
ctl = b43_piotx_read16(q, B43_PIO_TXCTL);
ctl |= B43_PIO_TXCTL_FREADY;
ctl &= ~B43_PIO_TXCTL_EOF;
/* Transfer the header data. */
ctl = tx_write_2byte_queue(q, ctl, hdr, hdrlen);
/* Transfer the frame data. */
ctl = tx_write_2byte_queue(q, ctl, frame, frame_len);
ctl |= B43_PIO_TXCTL_EOF;
b43_piotx_write16(q, B43_PIO_TXCTL, ctl);
}
static u32 tx_write_4byte_queue(struct b43_pio_txqueue *q,
u32 ctl,
const void *_data,
unsigned int data_len)
{
struct b43_wldev *dev = q->dev;
const u8 *data = _data;
ctl |= B43_PIO8_TXCTL_0_7 | B43_PIO8_TXCTL_8_15 |
B43_PIO8_TXCTL_16_23 | B43_PIO8_TXCTL_24_31;
b43_piotx_write32(q, B43_PIO8_TXCTL, ctl);
ssb_block_write(dev->dev, data, (data_len & ~3),
q->mmio_base + B43_PIO8_TXDATA,
sizeof(u32));
if (data_len & 3) {
u8 tail[4] = { 0, };
/* Write the last few bytes. */
ctl &= ~(B43_PIO8_TXCTL_8_15 | B43_PIO8_TXCTL_16_23 |
B43_PIO8_TXCTL_24_31);
switch (data_len & 3) {
case 3:
ctl |= B43_PIO8_TXCTL_16_23 | B43_PIO8_TXCTL_8_15;
tail[0] = data[data_len - 3];
tail[1] = data[data_len - 2];
tail[2] = data[data_len - 1];
break;
case 2:
ctl |= B43_PIO8_TXCTL_8_15;
tail[0] = data[data_len - 2];
tail[1] = data[data_len - 1];
break;
case 1:
tail[0] = data[data_len - 1];
break;
}
b43_piotx_write32(q, B43_PIO8_TXCTL, ctl);
ssb_block_write(dev->dev, tail, 4,
q->mmio_base + B43_PIO8_TXDATA,
sizeof(u32));
}
return ctl;
}
static void pio_tx_frame_4byte_queue(struct b43_pio_txpacket *pack,
const u8 *hdr, unsigned int hdrlen)
{
struct b43_pio_txqueue *q = pack->queue;
const char *frame = pack->skb->data;
unsigned int frame_len = pack->skb->len;
u32 ctl;
ctl = b43_piotx_read32(q, B43_PIO8_TXCTL);
ctl |= B43_PIO8_TXCTL_FREADY;
ctl &= ~B43_PIO8_TXCTL_EOF;
/* Transfer the header data. */
ctl = tx_write_4byte_queue(q, ctl, hdr, hdrlen);
/* Transfer the frame data. */
ctl = tx_write_4byte_queue(q, ctl, frame, frame_len);
ctl |= B43_PIO8_TXCTL_EOF;
b43_piotx_write32(q, B43_PIO_TXCTL, ctl);
}
static int pio_tx_frame(struct b43_pio_txqueue *q,
struct sk_buff *skb)
{
struct b43_pio_txpacket *pack;
struct b43_txhdr txhdr;
u16 cookie;
int err;
unsigned int hdrlen;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
B43_WARN_ON(list_empty(&q->packets_list));
pack = list_entry(q->packets_list.next,
struct b43_pio_txpacket, list);
cookie = generate_cookie(q, pack);
hdrlen = b43_txhdr_size(q->dev);
err = b43_generate_txhdr(q->dev, (u8 *)&txhdr, skb,
info, cookie);
if (err)
return err;
if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
/* Tell the firmware about the cookie of the last
* mcast frame, so it can clear the more-data bit in it. */
b43_shm_write16(q->dev, B43_SHM_SHARED,
B43_SHM_SH_MCASTCOOKIE, cookie);
}
pack->skb = skb;
if (q->rev >= 8)
pio_tx_frame_4byte_queue(pack, (const u8 *)&txhdr, hdrlen);
else
pio_tx_frame_2byte_queue(pack, (const u8 *)&txhdr, hdrlen);
/* Remove it from the list of available packet slots.
* It will be put back when we receive the status report. */
list_del(&pack->list);
/* Update the queue statistics. */
q->buffer_used += roundup(skb->len + hdrlen, 4);
q->free_packet_slots -= 1;
return 0;
}
int b43_pio_tx(struct b43_wldev *dev, struct sk_buff *skb)
{
struct b43_pio_txqueue *q;
struct ieee80211_hdr *hdr;
unsigned int hdrlen, total_len;
int err = 0;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
hdr = (struct ieee80211_hdr *)skb->data;
if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
/* The multicast queue will be sent after the DTIM. */
q = dev->pio.tx_queue_mcast;
/* Set the frame More-Data bit. Ucode will clear it
* for us on the last frame. */
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
} else {
/* Decide by priority where to put this frame. */
q = select_queue_by_priority(dev, skb_get_queue_mapping(skb));
}
hdrlen = b43_txhdr_size(dev);
total_len = roundup(skb->len + hdrlen, 4);
if (unlikely(total_len > q->buffer_size)) {
err = -ENOBUFS;
b43dbg(dev->wl, "PIO: TX packet longer than queue.\n");
goto out;
}
if (unlikely(q->free_packet_slots == 0)) {
err = -ENOBUFS;
b43warn(dev->wl, "PIO: TX packet overflow.\n");
goto out;
}
B43_WARN_ON(q->buffer_used > q->buffer_size);
if (total_len > (q->buffer_size - q->buffer_used)) {
/* Not enough memory on the queue. */
err = -EBUSY;
ieee80211_stop_queue(dev->wl->hw, skb_get_queue_mapping(skb));
q->stopped = 1;
goto out;
}
/* Assign the queue number to the ring (if not already done before)
* so TX status handling can use it. The mac80211-queue to b43-queue
* mapping is static, so we don't need to store it per frame. */
q->queue_prio = skb_get_queue_mapping(skb);
err = pio_tx_frame(q, skb);
if (unlikely(err == -ENOKEY)) {
/* Drop this packet, as we don't have the encryption key
* anymore and must not transmit it unencrypted. */
dev_kfree_skb_any(skb);
err = 0;
goto out;
}
if (unlikely(err)) {
b43err(dev->wl, "PIO transmission failure\n");
goto out;
}
q->nr_tx_packets++;
B43_WARN_ON(q->buffer_used > q->buffer_size);
if (((q->buffer_size - q->buffer_used) < roundup(2 + 2 + 6, 4)) ||
(q->free_packet_slots == 0)) {
/* The queue is full. */
ieee80211_stop_queue(dev->wl->hw, skb_get_queue_mapping(skb));
q->stopped = 1;
}
out:
return err;
}
void b43_pio_handle_txstatus(struct b43_wldev *dev,
const struct b43_txstatus *status)
{
struct b43_pio_txqueue *q;
struct b43_pio_txpacket *pack = NULL;
unsigned int total_len;
struct ieee80211_tx_info *info;
q = parse_cookie(dev, status->cookie, &pack);
if (unlikely(!q))
return;
B43_WARN_ON(!pack);
info = IEEE80211_SKB_CB(pack->skb);
b43_fill_txstatus_report(dev, info, status);
total_len = pack->skb->len + b43_txhdr_size(dev);
total_len = roundup(total_len, 4);
q->buffer_used -= total_len;
q->free_packet_slots += 1;
ieee80211_tx_status(dev->wl->hw, pack->skb);
pack->skb = NULL;
list_add(&pack->list, &q->packets_list);
if (q->stopped) {
ieee80211_wake_queue(dev->wl->hw, q->queue_prio);
q->stopped = 0;
}
}
void b43_pio_get_tx_stats(struct b43_wldev *dev,
struct ieee80211_tx_queue_stats *stats)
{
const int nr_queues = dev->wl->hw->queues;
struct b43_pio_txqueue *q;
int i;
for (i = 0; i < nr_queues; i++) {
q = select_queue_by_priority(dev, i);
stats[i].len = B43_PIO_MAX_NR_TXPACKETS - q->free_packet_slots;
stats[i].limit = B43_PIO_MAX_NR_TXPACKETS;
stats[i].count = q->nr_tx_packets;
}
}
/* Returns whether we should fetch another frame. */
static bool pio_rx_frame(struct b43_pio_rxqueue *q)
{
struct b43_wldev *dev = q->dev;
struct b43_rxhdr_fw4 rxhdr;
u16 len;
u32 macstat;
unsigned int i, padding;
struct sk_buff *skb;
const char *err_msg = NULL;
memset(&rxhdr, 0, sizeof(rxhdr));
/* Check if we have data and wait for it to get ready. */
if (q->rev >= 8) {
u32 ctl;
ctl = b43_piorx_read32(q, B43_PIO8_RXCTL);
if (!(ctl & B43_PIO8_RXCTL_FRAMERDY))
return 0;
b43_piorx_write32(q, B43_PIO8_RXCTL,
B43_PIO8_RXCTL_FRAMERDY);
for (i = 0; i < 10; i++) {
ctl = b43_piorx_read32(q, B43_PIO8_RXCTL);
if (ctl & B43_PIO8_RXCTL_DATARDY)
goto data_ready;
udelay(10);
}
} else {
u16 ctl;
ctl = b43_piorx_read16(q, B43_PIO_RXCTL);
if (!(ctl & B43_PIO_RXCTL_FRAMERDY))
return 0;
b43_piorx_write16(q, B43_PIO_RXCTL,
B43_PIO_RXCTL_FRAMERDY);
for (i = 0; i < 10; i++) {
ctl = b43_piorx_read16(q, B43_PIO_RXCTL);
if (ctl & B43_PIO_RXCTL_DATARDY)
goto data_ready;
udelay(10);
}
}
b43dbg(q->dev->wl, "PIO RX timed out\n");
return 1;
data_ready:
/* Get the preamble (RX header) */
if (q->rev >= 8) {
ssb_block_read(dev->dev, &rxhdr, sizeof(rxhdr),
q->mmio_base + B43_PIO8_RXDATA,
sizeof(u32));
} else {
ssb_block_read(dev->dev, &rxhdr, sizeof(rxhdr),
q->mmio_base + B43_PIO_RXDATA,
sizeof(u16));
}
/* Sanity checks. */
len = le16_to_cpu(rxhdr.frame_len);
if (unlikely(len > 0x700)) {
err_msg = "len > 0x700";
goto rx_error;
}
if (unlikely(len == 0)) {
err_msg = "len == 0";
goto rx_error;
}
macstat = le32_to_cpu(rxhdr.mac_status);
if (macstat & B43_RX_MAC_FCSERR) {
if (!(q->dev->wl->filter_flags & FIF_FCSFAIL)) {
/* Drop frames with failed FCS. */
err_msg = "Frame FCS error";
goto rx_error;
}
}
/* We always pad 2 bytes, as that's what upstream code expects
* due to the RX-header being 30 bytes. In case the frame is
* unaligned, we pad another 2 bytes. */
padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
skb = dev_alloc_skb(len + padding + 2);
if (unlikely(!skb)) {
err_msg = "Out of memory";
goto rx_error;
}
skb_reserve(skb, 2);
skb_put(skb, len + padding);
if (q->rev >= 8) {
ssb_block_read(dev->dev, skb->data + padding, (len & ~3),
q->mmio_base + B43_PIO8_RXDATA,
sizeof(u32));
if (len & 3) {
u8 tail[4] = { 0, };
/* Read the last few bytes. */
ssb_block_read(dev->dev, tail, 4,
q->mmio_base + B43_PIO8_RXDATA,
sizeof(u32));
switch (len & 3) {
case 3:
skb->data[len + padding - 3] = tail[0];
skb->data[len + padding - 2] = tail[1];
skb->data[len + padding - 1] = tail[2];
break;
case 2:
skb->data[len + padding - 2] = tail[0];
skb->data[len + padding - 1] = tail[1];
break;
case 1:
skb->data[len + padding - 1] = tail[0];
break;
}
}
} else {
ssb_block_read(dev->dev, skb->data + padding, (len & ~1),
q->mmio_base + B43_PIO_RXDATA,
sizeof(u16));
if (len & 1) {
u8 tail[2] = { 0, };
/* Read the last byte. */
ssb_block_read(dev->dev, tail, 2,
q->mmio_base + B43_PIO_RXDATA,
sizeof(u16));
skb->data[len + padding - 1] = tail[0];
}
}
b43_rx(q->dev, skb, &rxhdr);
return 1;
rx_error:
if (err_msg)
b43dbg(q->dev->wl, "PIO RX error: %s\n", err_msg);
b43_piorx_write16(q, B43_PIO_RXCTL, B43_PIO_RXCTL_DATARDY);
return 1;
}
void b43_pio_rx(struct b43_pio_rxqueue *q)
{
unsigned int count = 0;
bool stop;
while (1) {
stop = (pio_rx_frame(q) == 0);
if (stop)
break;
cond_resched();
if (WARN_ON_ONCE(++count > 10000))
break;
}
}
static void b43_pio_tx_suspend_queue(struct b43_pio_txqueue *q)
{
if (q->rev >= 8) {
b43_piotx_write32(q, B43_PIO8_TXCTL,
b43_piotx_read32(q, B43_PIO8_TXCTL)
| B43_PIO8_TXCTL_SUSPREQ);
} else {
b43_piotx_write16(q, B43_PIO_TXCTL,
b43_piotx_read16(q, B43_PIO_TXCTL)
| B43_PIO_TXCTL_SUSPREQ);
}
}
static void b43_pio_tx_resume_queue(struct b43_pio_txqueue *q)
{
if (q->rev >= 8) {
b43_piotx_write32(q, B43_PIO8_TXCTL,
b43_piotx_read32(q, B43_PIO8_TXCTL)
& ~B43_PIO8_TXCTL_SUSPREQ);
} else {
b43_piotx_write16(q, B43_PIO_TXCTL,
b43_piotx_read16(q, B43_PIO_TXCTL)
& ~B43_PIO_TXCTL_SUSPREQ);
}
}
void b43_pio_tx_suspend(struct b43_wldev *dev)
{
b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
b43_pio_tx_suspend_queue(dev->pio.tx_queue_AC_BK);
b43_pio_tx_suspend_queue(dev->pio.tx_queue_AC_BE);
b43_pio_tx_suspend_queue(dev->pio.tx_queue_AC_VI);
b43_pio_tx_suspend_queue(dev->pio.tx_queue_AC_VO);
b43_pio_tx_suspend_queue(dev->pio.tx_queue_mcast);
}
void b43_pio_tx_resume(struct b43_wldev *dev)
{
b43_pio_tx_resume_queue(dev->pio.tx_queue_mcast);
b43_pio_tx_resume_queue(dev->pio.tx_queue_AC_VO);
b43_pio_tx_resume_queue(dev->pio.tx_queue_AC_VI);
b43_pio_tx_resume_queue(dev->pio.tx_queue_AC_BE);
b43_pio_tx_resume_queue(dev->pio.tx_queue_AC_BK);
b43_power_saving_ctl_bits(dev, 0);
}
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