Port the PIO fixes from bcm43xx-softmac to bcm43xx-d80211.
Signed-off-by: Michael Buesch <[EMAIL PROTECTED]>
Index:
wireless-dev-dscapeports/drivers/net/wireless/d80211/bcm43xx/bcm43xx_dma.h
===================================================================
---
wireless-dev-dscapeports.orig/drivers/net/wireless/d80211/bcm43xx/bcm43xx_dma.h
2006-06-13 21:11:05.000000000 +0200
+++ wireless-dev-dscapeports/drivers/net/wireless/d80211/bcm43xx/bcm43xx_dma.h
2006-06-13 21:11:48.000000000 +0200
@@ -223,6 +223,14 @@
void bcm43xx_dma_rx(struct bcm43xx_dmaring *ring)
{
}
+static inline
+void bcm43xx_dma_tx_suspend(struct bcm43xx_dmaring *ring)
+{
+}
+static inline
+void bcm43xx_dma_tx_resume(struct bcm43xx_dmaring *ring)
+{
+}
#endif /* CONFIG_BCM43XX_D80211_DMA */
#endif /* BCM43xx_DMA_H_ */
Index:
wireless-dev-dscapeports/drivers/net/wireless/d80211/bcm43xx/bcm43xx_pio.c
===================================================================
---
wireless-dev-dscapeports.orig/drivers/net/wireless/d80211/bcm43xx/bcm43xx_pio.c
2006-06-13 21:11:24.000000000 +0200
+++ wireless-dev-dscapeports/drivers/net/wireless/d80211/bcm43xx/bcm43xx_pio.c
2006-06-13 21:11:48.000000000 +0200
@@ -27,6 +27,7 @@
#include "bcm43xx_pio.h"
#include "bcm43xx_main.h"
#include "bcm43xx_xmit.h"
+#include "bcm43xx_power.h"
#include <linux/delay.h>
@@ -44,10 +45,10 @@
bcm43xx_pio_write(queue, BCM43xx_PIO_TXDATA,
octet);
bcm43xx_pio_write(queue, BCM43xx_PIO_TXCTL,
- BCM43xx_PIO_TXCTL_WRITEHI);
+ BCM43xx_PIO_TXCTL_WRITELO);
} else {
bcm43xx_pio_write(queue, BCM43xx_PIO_TXCTL,
- BCM43xx_PIO_TXCTL_WRITEHI);
+ BCM43xx_PIO_TXCTL_WRITELO);
bcm43xx_pio_write(queue, BCM43xx_PIO_TXDATA,
octet);
}
@@ -103,7 +104,7 @@
bcm43xx_pio_write(queue, BCM43xx_PIO_TXDATA,
skb->data[skb->len - 1]);
bcm43xx_pio_write(queue, BCM43xx_PIO_TXCTL,
- BCM43xx_PIO_TXCTL_WRITEHI |
+ BCM43xx_PIO_TXCTL_WRITELO |
BCM43xx_PIO_TXCTL_COMPLETE);
} else {
bcm43xx_pio_write(queue, BCM43xx_PIO_TXCTL,
@@ -112,9 +113,10 @@
}
static u16 generate_cookie(struct bcm43xx_pioqueue *queue,
- int packetindex)
+ struct bcm43xx_pio_txpacket *packet)
{
u16 cookie = 0x0000;
+ int packetindex;
/* We use the upper 4 bits for the PIO
* controller ID and the lower 12 bits
@@ -135,6 +137,7 @@
default:
assert(0);
}
+ packetindex = pio_txpacket_getindex(packet);
assert(((u16)packetindex & 0xF000) == 0x0000);
cookie |= (u16)packetindex;
@@ -184,8 +187,8 @@
bcm43xx_generate_txhdr(queue->bcm,
&txhdr, skb->data, skb->len,
1,//FIXME
- generate_cookie(queue,
pio_txpacket_getindex(packet)),
- packet->ctl);
+ generate_cookie(queue, packet),
+ &packet->txstat.control);
tx_start(queue);
octets = skb->len + sizeof(txhdr);
@@ -200,10 +203,12 @@
{
struct bcm43xx_pioqueue *queue = packet->queue;
- if (irq_context)
- dev_kfree_skb_irq(packet->skb);
- else
- dev_kfree_skb(packet->skb);
+ if (packet->skb) {
+ if (irq_context)
+ dev_kfree_skb_irq(packet->skb);
+ else
+ dev_kfree_skb(packet->skb);
+ }
list_move(&packet->list, &queue->txfree);
queue->nr_txfree++;
}
@@ -216,8 +221,8 @@
octets = (u16)skb->len + sizeof(struct bcm43xx_txhdr);
if (queue->tx_devq_size < octets) {
- dprintkl(KERN_WARNING PFX "PIO queue too small. "
- "Dropping packet.\n");
+ printkl(KERN_WARNING PFX "PIO queue too small. "
+ "Dropping packet.\n");
/* Drop it silently (return success) */
free_txpacket(packet, 1);
return 0;
@@ -256,10 +261,14 @@
unsigned long flags;
struct bcm43xx_pio_txpacket *packet, *tmp_packet;
int err;
+ u16 txctl;
bcm43xx_lock_irqonly(bcm, flags);
if (queue->tx_frozen)
goto out_unlock;
+ txctl = bcm43xx_pio_read(queue, BCM43xx_PIO_TXCTL);
+ if (txctl & BCM43xx_PIO_TXCTL_SUSPEND)
+ goto out_unlock;
list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list) {
/* Try to transmit the packet. This can fail, if
@@ -316,12 +325,19 @@
(unsigned long)queue);
value = bcm43xx_read32(bcm, BCM43xx_MMIO_STATUS_BITFIELD);
- value |= BCM43xx_SBF_XFER_REG_BYTESWAP;
+ value &= ~BCM43xx_SBF_XFER_REG_BYTESWAP;
bcm43xx_write32(bcm, BCM43xx_MMIO_STATUS_BITFIELD, value);
qsize = bcm43xx_read16(bcm, queue->mmio_base + BCM43xx_PIO_TXQBUFSIZE);
+ if (qsize == 0) {
+ printk(KERN_ERR PFX "ERROR: This card does not support PIO "
+ "operation mode. Please use DMA mode "
+ "(module parameter pio=0).\n");
+ goto err_freequeue;
+ }
if (qsize <= BCM43xx_PIO_TXQADJUST) {
- printk(KERN_ERR PFX "PIO tx device-queue too small (%u)\n",
qsize);
+ printk(KERN_ERR PFX "PIO tx device-queue too small (%u)\n",
+ qsize);
goto err_freequeue;
}
qsize -= BCM43xx_PIO_TXQADJUST;
@@ -430,20 +446,19 @@
{
struct bcm43xx_pioqueue *queue = bcm43xx_current_pio(bcm)->queue1;
struct bcm43xx_pio_txpacket *packet;
- u16 tmp;
assert(!queue->tx_suspended);
assert(!list_empty(&queue->txfree));
- tmp = bcm43xx_pio_read(queue, BCM43xx_PIO_TXCTL);
- if (tmp & BCM43xx_PIO_TXCTL_SUSPEND)
- return -EBUSY;
-
packet = list_entry(queue->txfree.next, struct bcm43xx_pio_txpacket,
list);
packet->skb = skb;
- packet->ctl = ctl;
+
+ memset(&packet->txstat, 0, sizeof(packet->txstat));
+ memcpy(&packet->txstat.control, ctl, sizeof(*ctl));
+
list_move_tail(&packet->list, &queue->txqueue);
queue->nr_txfree--;
+ queue->nr_tx_packets++;
assert(queue->nr_txfree < BCM43xx_PIO_MAXTXPACKETS);
tasklet_schedule(&queue->txtask);
@@ -459,11 +474,20 @@
queue = parse_cookie(bcm, status->cookie, &packet);
assert(queue);
-//TODO
-if (!queue)
-return;
+
+ queue->tx_devq_packets--;
+ queue->tx_devq_used -= (packet->skb->len + sizeof(struct
bcm43xx_txhdr));
+
+ packet->txstat.ack = !!(status->flags & BCM43xx_TXSTAT_FLAG_ACK);
+ packet->txstat.retry_count = status->cnt2 - 1;
+ ieee80211_tx_status_irqsafe(bcm->net_dev, packet->skb,
+ &(packet->txstat));
+ packet->skb = NULL;
+
free_txpacket(packet, 1);
- /* If there are packets on the txqueue, poke the tasklet. */
+ /* If there are packets on the txqueue, poke the tasklet
+ * to transmit them.
+ */
if (!list_empty(&queue->txqueue))
tasklet_schedule(&queue->txtask);
}
@@ -508,12 +532,9 @@
int i, preamble_readwords;
struct sk_buff *skb;
-return;
tmp = bcm43xx_pio_read(queue, BCM43xx_PIO_RXCTL);
- if (!(tmp & BCM43xx_PIO_RXCTL_DATAAVAILABLE)) {
- dprintkl(KERN_ERR PFX "PIO RX: No data available\n");//TODO:
remove this printk.
+ if (!(tmp & BCM43xx_PIO_RXCTL_DATAAVAILABLE))
return;
- }
bcm43xx_pio_write(queue, BCM43xx_PIO_RXCTL,
BCM43xx_PIO_RXCTL_DATAAVAILABLE);
@@ -527,8 +548,7 @@
return;
data_ready:
-//FIXME: endianess in this function.
- len = le16_to_cpu(bcm43xx_pio_read(queue, BCM43xx_PIO_RXDATA));
+ len = bcm43xx_pio_read(queue, BCM43xx_PIO_RXDATA);
if (unlikely(len > 0x700)) {
pio_rx_error(queue, 0, "len > 0x700");
return;
@@ -544,7 +564,7 @@
preamble_readwords = 18 / sizeof(u16);
for (i = 0; i < preamble_readwords; i++) {
tmp = bcm43xx_pio_read(queue, BCM43xx_PIO_RXDATA);
- preamble[i + 1] = cpu_to_be16(tmp);//FIXME?
+ preamble[i + 1] = cpu_to_le16(tmp);
}
rxhdr = (struct bcm43xx_rxhdr *)preamble;
rxflags2 = le16_to_cpu(rxhdr->flags2);
@@ -580,20 +600,43 @@
}
skb_put(skb, len);
for (i = 0; i < len - 1; i += 2) {
- tmp = cpu_to_be16(bcm43xx_pio_read(queue, BCM43xx_PIO_RXDATA));
- *((u16 *)(skb->data + i)) = tmp;
+ tmp = bcm43xx_pio_read(queue, BCM43xx_PIO_RXDATA);
+ *((u16 *)(skb->data + i)) = cpu_to_le16(tmp);
}
if (len % 2) {
tmp = bcm43xx_pio_read(queue, BCM43xx_PIO_RXDATA);
skb->data[len - 1] = (tmp & 0x00FF);
+/* The specs say the following is required, but
+ * it is wrong and corrupts the PLCP. If we don't do
+ * this, the PLCP seems to be correct. So ifdef it out for now.
+ */
+#if 0
if (rxflags2 & BCM43xx_RXHDR_FLAGS2_TYPE2FRAME)
- skb->data[0x20] = (tmp & 0xFF00) >> 8;
+ skb->data[2] = (tmp & 0xFF00) >> 8;
else
- skb->data[0x1E] = (tmp & 0xFF00) >> 8;
+ skb->data[0] = (tmp & 0xFF00) >> 8;
+#endif
}
bcm43xx_rx(queue->bcm, skb, rxhdr);
}
+void bcm43xx_pio_tx_suspend(struct bcm43xx_pioqueue *queue)
+{
+ bcm43xx_power_saving_ctl_bits(queue->bcm, -1, 1);
+ bcm43xx_pio_write(queue, BCM43xx_PIO_TXCTL,
+ bcm43xx_pio_read(queue, BCM43xx_PIO_TXCTL)
+ | BCM43xx_PIO_TXCTL_SUSPEND);
+}
+
+void bcm43xx_pio_tx_resume(struct bcm43xx_pioqueue *queue)
+{
+ bcm43xx_pio_write(queue, BCM43xx_PIO_TXCTL,
+ bcm43xx_pio_read(queue, BCM43xx_PIO_TXCTL)
+ & ~BCM43xx_PIO_TXCTL_SUSPEND);
+ bcm43xx_power_saving_ctl_bits(queue->bcm, -1, -1);
+ tasklet_schedule(&queue->txtask);
+}
+
void bcm43xx_pio_freeze_txqueues(struct bcm43xx_private *bcm)
{
struct bcm43xx_pio *pio;
Index:
wireless-dev-dscapeports/drivers/net/wireless/d80211/bcm43xx/bcm43xx_pio.h
===================================================================
---
wireless-dev-dscapeports.orig/drivers/net/wireless/d80211/bcm43xx/bcm43xx_pio.h
2006-06-13 21:11:24.000000000 +0200
+++ wireless-dev-dscapeports/drivers/net/wireless/d80211/bcm43xx/bcm43xx_pio.h
2006-06-13 21:11:48.000000000 +0200
@@ -14,8 +14,8 @@
#define BCM43xx_PIO_RXCTL 0x08
#define BCM43xx_PIO_RXDATA 0x0A
-#define BCM43xx_PIO_TXCTL_WRITEHI (1 << 0)
-#define BCM43xx_PIO_TXCTL_WRITELO (1 << 1)
+#define BCM43xx_PIO_TXCTL_WRITELO (1 << 0)
+#define BCM43xx_PIO_TXCTL_WRITEHI (1 << 1)
#define BCM43xx_PIO_TXCTL_COMPLETE (1 << 2)
#define BCM43xx_PIO_TXCTL_INIT (1 << 3)
#define BCM43xx_PIO_TXCTL_SUSPEND (1 << 7)
@@ -41,7 +41,7 @@
struct bcm43xx_pio_txpacket {
struct bcm43xx_pioqueue *queue;
struct sk_buff *skb;
- struct ieee80211_tx_control *ctl;
+ struct ieee80211_tx_status txstat;
struct list_head list;
};
@@ -94,6 +94,7 @@
u16 offset, u16 value)
{
bcm43xx_write16(queue->bcm, queue->mmio_base + offset, value);
+ mmiowb();
}
@@ -108,6 +109,10 @@
void bcm43xx_pio_get_tx_stats(struct bcm43xx_private *bcm,
struct ieee80211_tx_queue_stats *stats);
void bcm43xx_pio_rx(struct bcm43xx_pioqueue *queue);
+
+/* Suspend TX queue in hardware. */
+void bcm43xx_pio_tx_suspend(struct bcm43xx_pioqueue *queue);
+void bcm43xx_pio_tx_resume(struct bcm43xx_pioqueue *queue);
/* Suspend (freeze) the TX tasklet (software level). */
void bcm43xx_pio_freeze_txqueues(struct bcm43xx_private *bcm);
void bcm43xx_pio_thaw_txqueues(struct bcm43xx_private *bcm);
@@ -145,6 +150,14 @@
{
}
static inline
+void bcm43xx_pio_tx_suspend(struct bcm43xx_pioqueue *queue)
+{
+}
+static inline
+void bcm43xx_pio_tx_resume(struct bcm43xx_pioqueue *queue)
+{
+}
+static inline
void bcm43xx_pio_freeze_txqueues(struct bcm43xx_private *bcm)
{
}
--
-
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