mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
b43: do not stack-allocate pio rx/tx header and tail buffers
The DMA-API debugging facility complains about b43 mapping memory from stack for SDIO-based cards. Indeed, b43 currently allocates the PIO RX/TX header and tail buffers from stack. The solution here is to use heap-allocated buffers instead. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
parent
f5b4da21ba
commit
7e937c633f
@ -607,82 +607,7 @@ struct b43_qos_params {
|
||||
struct ieee80211_tx_queue_params p;
|
||||
};
|
||||
|
||||
struct b43_wldev;
|
||||
|
||||
/* Data structure for the WLAN parts (802.11 cores) of the b43 chip. */
|
||||
struct b43_wl {
|
||||
/* Pointer to the active wireless device on this chip */
|
||||
struct b43_wldev *current_dev;
|
||||
/* Pointer to the ieee80211 hardware data structure */
|
||||
struct ieee80211_hw *hw;
|
||||
|
||||
/* Global driver mutex. Every operation must run with this mutex locked. */
|
||||
struct mutex mutex;
|
||||
/* Hard-IRQ spinlock. This lock protects things used in the hard-IRQ
|
||||
* handler, only. This basically is just the IRQ mask register. */
|
||||
spinlock_t hardirq_lock;
|
||||
|
||||
/* The number of queues that were registered with the mac80211 subsystem
|
||||
* initially. This is a backup copy of hw->queues in case hw->queues has
|
||||
* to be dynamically lowered at runtime (Firmware does not support QoS).
|
||||
* hw->queues has to be restored to the original value before unregistering
|
||||
* from the mac80211 subsystem. */
|
||||
u16 mac80211_initially_registered_queues;
|
||||
|
||||
/* We can only have one operating interface (802.11 core)
|
||||
* at a time. General information about this interface follows.
|
||||
*/
|
||||
|
||||
struct ieee80211_vif *vif;
|
||||
/* The MAC address of the operating interface. */
|
||||
u8 mac_addr[ETH_ALEN];
|
||||
/* Current BSSID */
|
||||
u8 bssid[ETH_ALEN];
|
||||
/* Interface type. (NL80211_IFTYPE_XXX) */
|
||||
int if_type;
|
||||
/* Is the card operating in AP, STA or IBSS mode? */
|
||||
bool operating;
|
||||
/* filter flags */
|
||||
unsigned int filter_flags;
|
||||
/* Stats about the wireless interface */
|
||||
struct ieee80211_low_level_stats ieee_stats;
|
||||
|
||||
#ifdef CONFIG_B43_HWRNG
|
||||
struct hwrng rng;
|
||||
bool rng_initialized;
|
||||
char rng_name[30 + 1];
|
||||
#endif /* CONFIG_B43_HWRNG */
|
||||
|
||||
/* List of all wireless devices on this chip */
|
||||
struct list_head devlist;
|
||||
u8 nr_devs;
|
||||
|
||||
bool radiotap_enabled;
|
||||
bool radio_enabled;
|
||||
|
||||
/* The beacon we are currently using (AP or IBSS mode). */
|
||||
struct sk_buff *current_beacon;
|
||||
bool beacon0_uploaded;
|
||||
bool beacon1_uploaded;
|
||||
bool beacon_templates_virgin; /* Never wrote the templates? */
|
||||
struct work_struct beacon_update_trigger;
|
||||
|
||||
/* The current QOS parameters for the 4 queues. */
|
||||
struct b43_qos_params qos_params[4];
|
||||
|
||||
/* Work for adjustment of the transmission power.
|
||||
* This is scheduled when we determine that the actual TX output
|
||||
* power doesn't match what we want. */
|
||||
struct work_struct txpower_adjust_work;
|
||||
|
||||
/* Packet transmit work */
|
||||
struct work_struct tx_work;
|
||||
/* Queue of packets to be transmitted. */
|
||||
struct sk_buff_head tx_queue;
|
||||
|
||||
/* The device LEDs. */
|
||||
struct b43_leds leds;
|
||||
};
|
||||
struct b43_wl;
|
||||
|
||||
/* The type of the firmware file. */
|
||||
enum b43_firmware_file_type {
|
||||
@ -824,6 +749,97 @@ struct b43_wldev {
|
||||
#endif
|
||||
};
|
||||
|
||||
/*
|
||||
* Include goes here to avoid a dependency problem.
|
||||
* A better fix would be to integrate xmit.h into b43.h.
|
||||
*/
|
||||
#include "xmit.h"
|
||||
|
||||
/* Data structure for the WLAN parts (802.11 cores) of the b43 chip. */
|
||||
struct b43_wl {
|
||||
/* Pointer to the active wireless device on this chip */
|
||||
struct b43_wldev *current_dev;
|
||||
/* Pointer to the ieee80211 hardware data structure */
|
||||
struct ieee80211_hw *hw;
|
||||
|
||||
/* Global driver mutex. Every operation must run with this mutex locked. */
|
||||
struct mutex mutex;
|
||||
/* Hard-IRQ spinlock. This lock protects things used in the hard-IRQ
|
||||
* handler, only. This basically is just the IRQ mask register. */
|
||||
spinlock_t hardirq_lock;
|
||||
|
||||
/* The number of queues that were registered with the mac80211 subsystem
|
||||
* initially. This is a backup copy of hw->queues in case hw->queues has
|
||||
* to be dynamically lowered at runtime (Firmware does not support QoS).
|
||||
* hw->queues has to be restored to the original value before unregistering
|
||||
* from the mac80211 subsystem. */
|
||||
u16 mac80211_initially_registered_queues;
|
||||
|
||||
/* We can only have one operating interface (802.11 core)
|
||||
* at a time. General information about this interface follows.
|
||||
*/
|
||||
|
||||
struct ieee80211_vif *vif;
|
||||
/* The MAC address of the operating interface. */
|
||||
u8 mac_addr[ETH_ALEN];
|
||||
/* Current BSSID */
|
||||
u8 bssid[ETH_ALEN];
|
||||
/* Interface type. (NL80211_IFTYPE_XXX) */
|
||||
int if_type;
|
||||
/* Is the card operating in AP, STA or IBSS mode? */
|
||||
bool operating;
|
||||
/* filter flags */
|
||||
unsigned int filter_flags;
|
||||
/* Stats about the wireless interface */
|
||||
struct ieee80211_low_level_stats ieee_stats;
|
||||
|
||||
#ifdef CONFIG_B43_HWRNG
|
||||
struct hwrng rng;
|
||||
bool rng_initialized;
|
||||
char rng_name[30 + 1];
|
||||
#endif /* CONFIG_B43_HWRNG */
|
||||
|
||||
/* List of all wireless devices on this chip */
|
||||
struct list_head devlist;
|
||||
u8 nr_devs;
|
||||
|
||||
bool radiotap_enabled;
|
||||
bool radio_enabled;
|
||||
|
||||
/* The beacon we are currently using (AP or IBSS mode). */
|
||||
struct sk_buff *current_beacon;
|
||||
bool beacon0_uploaded;
|
||||
bool beacon1_uploaded;
|
||||
bool beacon_templates_virgin; /* Never wrote the templates? */
|
||||
struct work_struct beacon_update_trigger;
|
||||
|
||||
/* The current QOS parameters for the 4 queues. */
|
||||
struct b43_qos_params qos_params[4];
|
||||
|
||||
/* Work for adjustment of the transmission power.
|
||||
* This is scheduled when we determine that the actual TX output
|
||||
* power doesn't match what we want. */
|
||||
struct work_struct txpower_adjust_work;
|
||||
|
||||
/* Packet transmit work */
|
||||
struct work_struct tx_work;
|
||||
/* Queue of packets to be transmitted. */
|
||||
struct sk_buff_head tx_queue;
|
||||
|
||||
/* The device LEDs. */
|
||||
struct b43_leds leds;
|
||||
|
||||
#ifdef CONFIG_B43_PIO
|
||||
/*
|
||||
* RX/TX header/tail buffers used by the frame transmit functions.
|
||||
*/
|
||||
struct b43_rxhdr_fw4 rxhdr;
|
||||
struct b43_txhdr txhdr;
|
||||
u8 rx_tail[4];
|
||||
u8 tx_tail[4];
|
||||
#endif /* CONFIG_B43_PIO */
|
||||
};
|
||||
|
||||
static inline struct b43_wl *hw_to_b43_wl(struct ieee80211_hw *hw)
|
||||
{
|
||||
return hw->priv;
|
||||
|
@ -331,6 +331,7 @@ static u16 tx_write_2byte_queue(struct b43_pio_txqueue *q,
|
||||
unsigned int data_len)
|
||||
{
|
||||
struct b43_wldev *dev = q->dev;
|
||||
struct b43_wl *wl = dev->wl;
|
||||
const u8 *data = _data;
|
||||
|
||||
ctl |= B43_PIO_TXCTL_WRITELO | B43_PIO_TXCTL_WRITEHI;
|
||||
@ -340,13 +341,12 @@ static u16 tx_write_2byte_queue(struct b43_pio_txqueue *q,
|
||||
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,
|
||||
wl->tx_tail[0] = data[data_len - 1];
|
||||
wl->tx_tail[1] = 0;
|
||||
ssb_block_write(dev->dev, wl->tx_tail, 2,
|
||||
q->mmio_base + B43_PIO_TXDATA,
|
||||
sizeof(u16));
|
||||
}
|
||||
@ -381,6 +381,7 @@ static u32 tx_write_4byte_queue(struct b43_pio_txqueue *q,
|
||||
unsigned int data_len)
|
||||
{
|
||||
struct b43_wldev *dev = q->dev;
|
||||
struct b43_wl *wl = dev->wl;
|
||||
const u8 *data = _data;
|
||||
|
||||
ctl |= B43_PIO8_TXCTL_0_7 | B43_PIO8_TXCTL_8_15 |
|
||||
@ -391,29 +392,31 @@ static u32 tx_write_4byte_queue(struct b43_pio_txqueue *q,
|
||||
q->mmio_base + B43_PIO8_TXDATA,
|
||||
sizeof(u32));
|
||||
if (data_len & 3) {
|
||||
u8 tail[4] = { 0, };
|
||||
|
||||
wl->tx_tail[3] = 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];
|
||||
wl->tx_tail[0] = data[data_len - 3];
|
||||
wl->tx_tail[1] = data[data_len - 2];
|
||||
wl->tx_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];
|
||||
wl->tx_tail[0] = data[data_len - 2];
|
||||
wl->tx_tail[1] = data[data_len - 1];
|
||||
wl->tx_tail[2] = 0;
|
||||
break;
|
||||
case 1:
|
||||
tail[0] = data[data_len - 1];
|
||||
wl->tx_tail[0] = data[data_len - 1];
|
||||
wl->tx_tail[1] = 0;
|
||||
wl->tx_tail[2] = 0;
|
||||
break;
|
||||
}
|
||||
b43_piotx_write32(q, B43_PIO8_TXCTL, ctl);
|
||||
ssb_block_write(dev->dev, tail, 4,
|
||||
ssb_block_write(dev->dev, wl->tx_tail, 4,
|
||||
q->mmio_base + B43_PIO8_TXDATA,
|
||||
sizeof(u32));
|
||||
}
|
||||
@ -445,8 +448,9 @@ static void pio_tx_frame_4byte_queue(struct b43_pio_txpacket *pack,
|
||||
static int pio_tx_frame(struct b43_pio_txqueue *q,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
struct b43_wldev *dev = q->dev;
|
||||
struct b43_wl *wl = dev->wl;
|
||||
struct b43_pio_txpacket *pack;
|
||||
struct b43_txhdr txhdr;
|
||||
u16 cookie;
|
||||
int err;
|
||||
unsigned int hdrlen;
|
||||
@ -457,8 +461,8 @@ static int pio_tx_frame(struct b43_pio_txqueue *q,
|
||||
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,
|
||||
hdrlen = b43_txhdr_size(dev);
|
||||
err = b43_generate_txhdr(dev, (u8 *)&wl->txhdr, skb,
|
||||
info, cookie);
|
||||
if (err)
|
||||
return err;
|
||||
@ -466,15 +470,15 @@ static int pio_tx_frame(struct b43_pio_txqueue *q,
|
||||
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_write16(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);
|
||||
pio_tx_frame_4byte_queue(pack, (const u8 *)&wl->txhdr, hdrlen);
|
||||
else
|
||||
pio_tx_frame_2byte_queue(pack, (const u8 *)&txhdr, hdrlen);
|
||||
pio_tx_frame_2byte_queue(pack, (const u8 *)&wl->txhdr, hdrlen);
|
||||
|
||||
/* Remove it from the list of available packet slots.
|
||||
* It will be put back when we receive the status report. */
|
||||
@ -614,14 +618,14 @@ void b43_pio_get_tx_stats(struct b43_wldev *dev,
|
||||
static bool pio_rx_frame(struct b43_pio_rxqueue *q)
|
||||
{
|
||||
struct b43_wldev *dev = q->dev;
|
||||
struct b43_rxhdr_fw4 rxhdr;
|
||||
struct b43_wl *wl = dev->wl;
|
||||
u16 len;
|
||||
u32 macstat;
|
||||
unsigned int i, padding;
|
||||
struct sk_buff *skb;
|
||||
const char *err_msg = NULL;
|
||||
|
||||
memset(&rxhdr, 0, sizeof(rxhdr));
|
||||
memset(&wl->rxhdr, 0, sizeof(wl->rxhdr));
|
||||
|
||||
/* Check if we have data and wait for it to get ready. */
|
||||
if (q->rev >= 8) {
|
||||
@ -659,16 +663,16 @@ data_ready:
|
||||
|
||||
/* Get the preamble (RX header) */
|
||||
if (q->rev >= 8) {
|
||||
ssb_block_read(dev->dev, &rxhdr, sizeof(rxhdr),
|
||||
ssb_block_read(dev->dev, &wl->rxhdr, sizeof(wl->rxhdr),
|
||||
q->mmio_base + B43_PIO8_RXDATA,
|
||||
sizeof(u32));
|
||||
} else {
|
||||
ssb_block_read(dev->dev, &rxhdr, sizeof(rxhdr),
|
||||
ssb_block_read(dev->dev, &wl->rxhdr, sizeof(wl->rxhdr),
|
||||
q->mmio_base + B43_PIO_RXDATA,
|
||||
sizeof(u16));
|
||||
}
|
||||
/* Sanity checks. */
|
||||
len = le16_to_cpu(rxhdr.frame_len);
|
||||
len = le16_to_cpu(wl->rxhdr.frame_len);
|
||||
if (unlikely(len > 0x700)) {
|
||||
err_msg = "len > 0x700";
|
||||
goto rx_error;
|
||||
@ -678,7 +682,7 @@ data_ready:
|
||||
goto rx_error;
|
||||
}
|
||||
|
||||
macstat = le32_to_cpu(rxhdr.mac_status);
|
||||
macstat = le32_to_cpu(wl->rxhdr.mac_status);
|
||||
if (macstat & B43_RX_MAC_FCSERR) {
|
||||
if (!(q->dev->wl->filter_flags & FIF_FCSFAIL)) {
|
||||
/* Drop frames with failed FCS. */
|
||||
@ -703,24 +707,22 @@ data_ready:
|
||||
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,
|
||||
ssb_block_read(dev->dev, wl->rx_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];
|
||||
skb->data[len + padding - 3] = wl->rx_tail[0];
|
||||
skb->data[len + padding - 2] = wl->rx_tail[1];
|
||||
skb->data[len + padding - 1] = wl->rx_tail[2];
|
||||
break;
|
||||
case 2:
|
||||
skb->data[len + padding - 2] = tail[0];
|
||||
skb->data[len + padding - 1] = tail[1];
|
||||
skb->data[len + padding - 2] = wl->rx_tail[0];
|
||||
skb->data[len + padding - 1] = wl->rx_tail[1];
|
||||
break;
|
||||
case 1:
|
||||
skb->data[len + padding - 1] = tail[0];
|
||||
skb->data[len + padding - 1] = wl->rx_tail[0];
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -729,17 +731,15 @@ data_ready:
|
||||
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,
|
||||
ssb_block_read(dev->dev, wl->rx_tail, 2,
|
||||
q->mmio_base + B43_PIO_RXDATA,
|
||||
sizeof(u16));
|
||||
skb->data[len + padding - 1] = tail[0];
|
||||
skb->data[len + padding - 1] = wl->rx_tail[0];
|
||||
}
|
||||
}
|
||||
|
||||
b43_rx(q->dev, skb, &rxhdr);
|
||||
b43_rx(q->dev, skb, &wl->rxhdr);
|
||||
|
||||
return 1;
|
||||
|
||||
|
@ -27,7 +27,7 @@
|
||||
|
||||
*/
|
||||
|
||||
#include "xmit.h"
|
||||
#include "b43.h"
|
||||
#include "phy_common.h"
|
||||
#include "dma.h"
|
||||
#include "pio.h"
|
||||
|
Loading…
Reference in New Issue
Block a user