dma_addr_t dmaaddr;
if (tx)
- dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
- buf, len,
- DMA_TO_DEVICE);
+ dmaaddr = ssb_dma_map_single(ring->dev->dev,
+ buf, len,
+ DMA_TO_DEVICE);
else
- dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
- buf, len,
- DMA_FROM_DEVICE);
+ dmaaddr = ssb_dma_map_single(ring->dev->dev,
+ buf, len,
+ DMA_FROM_DEVICE);
return dmaaddr;
}
int tx)
{
if (tx)
- dma_unmap_single(ring->dev->dev->dma_dev,
- addr, len,
- DMA_TO_DEVICE);
+ ssb_dma_unmap_single(ring->dev->dev,
+ addr, len,
+ DMA_TO_DEVICE);
else
- dma_unmap_single(ring->dev->dev->dma_dev,
- addr, len,
- DMA_FROM_DEVICE);
+ ssb_dma_unmap_single(ring->dev->dev,
+ addr, len,
+ DMA_FROM_DEVICE);
}
static inline
{
B43legacy_WARN_ON(ring->tx);
- dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
- addr, len, DMA_FROM_DEVICE);
+ ssb_dma_sync_single_for_cpu(ring->dev->dev,
+ addr, len, DMA_FROM_DEVICE);
}
static inline
{
B43legacy_WARN_ON(ring->tx);
- dma_sync_single_for_device(ring->dev->dev->dma_dev,
- addr, len, DMA_FROM_DEVICE);
+ ssb_dma_sync_single_for_device(ring->dev->dev,
+ addr, len, DMA_FROM_DEVICE);
}
static inline
static int alloc_ringmemory(struct b43legacy_dmaring *ring)
{
- struct device *dma_dev = ring->dev->dev->dma_dev;
-
- ring->descbase = dma_alloc_coherent(dma_dev, B43legacy_DMA_RINGMEMSIZE,
- &(ring->dmabase), GFP_KERNEL);
+ /* GFP flags must match the flags in free_ringmemory()! */
+ ring->descbase = ssb_dma_alloc_consistent(ring->dev->dev,
+ B43legacy_DMA_RINGMEMSIZE,
+ &(ring->dmabase),
+ GFP_KERNEL);
if (!ring->descbase) {
b43legacyerr(ring->dev->wl, "DMA ringmemory allocation"
" failed\n");
static void free_ringmemory(struct b43legacy_dmaring *ring)
{
- struct device *dma_dev = ring->dev->dev->dma_dev;
-
- dma_free_coherent(dma_dev, B43legacy_DMA_RINGMEMSIZE,
- ring->descbase, ring->dmabase);
+ ssb_dma_free_consistent(ring->dev->dev, B43legacy_DMA_RINGMEMSIZE,
+ ring->descbase, ring->dmabase, GFP_KERNEL);
}
/* Reset the RX DMA channel */
size_t buffersize,
bool dma_to_device)
{
- if (unlikely(dma_mapping_error(addr)))
+ if (unlikely(ssb_dma_mapping_error(ring->dev->dev, addr)))
return 1;
switch (ring->type) {
tmp = b43legacy_read32(dev, SSB_TMSHIGH);
if (tmp & SSB_TMSHIGH_DMA64)
- return DMA_64BIT_MASK;
+ return DMA_BIT_MASK(64);
mmio_base = b43legacy_dmacontroller_base(0, 0);
b43legacy_write32(dev,
mmio_base + B43legacy_DMA32_TXCTL,
tmp = b43legacy_read32(dev, mmio_base +
B43legacy_DMA32_TXCTL);
if (tmp & B43legacy_DMA32_TXADDREXT_MASK)
- return DMA_32BIT_MASK;
+ return DMA_BIT_MASK(32);
- return DMA_30BIT_MASK;
+ return DMA_BIT_MASK(30);
+}
+
+static enum b43legacy_dmatype dma_mask_to_engine_type(u64 dmamask)
+{
+ if (dmamask == DMA_BIT_MASK(30))
+ return B43legacy_DMA_30BIT;
+ if (dmamask == DMA_BIT_MASK(32))
+ return B43legacy_DMA_32BIT;
+ if (dmamask == DMA_BIT_MASK(64))
+ return B43legacy_DMA_64BIT;
+ B43legacy_WARN_ON(1);
+ return B43legacy_DMA_30BIT;
}
/* Main initialization function. */
if (!ring)
goto out;
ring->type = type;
+ ring->dev = dev;
nr_slots = B43legacy_RXRING_SLOTS;
if (for_tx)
goto err_kfree_meta;
/* test for ability to dma to txhdr_cache */
- dma_test = dma_map_single(dev->dev->dma_dev, ring->txhdr_cache,
- sizeof(struct b43legacy_txhdr_fw3),
- DMA_TO_DEVICE);
+ dma_test = ssb_dma_map_single(dev->dev, ring->txhdr_cache,
+ sizeof(struct b43legacy_txhdr_fw3),
+ DMA_TO_DEVICE);
if (b43legacy_dma_mapping_error(ring, dma_test,
sizeof(struct b43legacy_txhdr_fw3), 1)) {
if (!ring->txhdr_cache)
goto err_kfree_meta;
- dma_test = dma_map_single(dev->dev->dma_dev,
+ dma_test = ssb_dma_map_single(dev->dev,
ring->txhdr_cache,
sizeof(struct b43legacy_txhdr_fw3),
DMA_TO_DEVICE);
goto err_kfree_txhdr_cache;
}
- dma_unmap_single(dev->dev->dma_dev,
- dma_test, sizeof(struct b43legacy_txhdr_fw3),
- DMA_TO_DEVICE);
+ ssb_dma_unmap_single(dev->dev, dma_test,
+ sizeof(struct b43legacy_txhdr_fw3),
+ DMA_TO_DEVICE);
}
- ring->dev = dev;
ring->nr_slots = nr_slots;
ring->mmio_base = b43legacy_dmacontroller_base(type, controller_index);
ring->index = controller_index;
dma->tx_ring0 = NULL;
}
+static int b43legacy_dma_set_mask(struct b43legacy_wldev *dev, u64 mask)
+{
+ u64 orig_mask = mask;
+ bool fallback = 0;
+ int err;
+
+ /* Try to set the DMA mask. If it fails, try falling back to a
+ * lower mask, as we can always also support a lower one. */
+ while (1) {
+ err = ssb_dma_set_mask(dev->dev, mask);
+ if (!err)
+ break;
+ if (mask == DMA_BIT_MASK(64)) {
+ mask = DMA_BIT_MASK(32);
+ fallback = 1;
+ continue;
+ }
+ if (mask == DMA_BIT_MASK(32)) {
+ mask = DMA_BIT_MASK(30);
+ fallback = 1;
+ continue;
+ }
+ b43legacyerr(dev->wl, "The machine/kernel does not support "
+ "the required %u-bit DMA mask\n",
+ (unsigned int)dma_mask_to_engine_type(orig_mask));
+ return -EOPNOTSUPP;
+ }
+ if (fallback) {
+ b43legacyinfo(dev->wl, "DMA mask fallback from %u-bit to %u-"
+ "bit\n",
+ (unsigned int)dma_mask_to_engine_type(orig_mask),
+ (unsigned int)dma_mask_to_engine_type(mask));
+ }
+
+ return 0;
+}
+
int b43legacy_dma_init(struct b43legacy_wldev *dev)
{
struct b43legacy_dma *dma = &dev->dma;
enum b43legacy_dmatype type;
dmamask = supported_dma_mask(dev);
- switch (dmamask) {
- default:
- B43legacy_WARN_ON(1);
- case DMA_30BIT_MASK:
- type = B43legacy_DMA_30BIT;
- break;
- case DMA_32BIT_MASK:
- type = B43legacy_DMA_32BIT;
- break;
- case DMA_64BIT_MASK:
- type = B43legacy_DMA_64BIT;
- break;
- }
-
- err = ssb_dma_set_mask(dev->dev, dmamask);
+ type = dma_mask_to_engine_type(dmamask);
+ err = b43legacy_dma_set_mask(dev, dmamask);
if (err) {
#ifdef CONFIG_B43LEGACY_PIO
b43legacywarn(dev->wl, "DMA for this device not supported. "
struct b43legacy_dmaring *ring;
struct b43legacy_dmadesc_generic *desc;
struct b43legacy_dmadesc_meta *meta;
+ int retry_limit;
int slot;
ring = parse_cookie(dev, status->cookie, &slot);
struct ieee80211_tx_info *info;
BUG_ON(!meta->skb);
info = IEEE80211_SKB_CB(meta->skb);
- /* Call back to inform the ieee80211 subsystem about the
- * status of the transmission.
- * Some fields of txstat are already filled in dma_tx().
- */
- memset(&info->status, 0, sizeof(info->status));
+ /* 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) {
+ 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 (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
- info->status.excessive_retries = 1;
+ 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;
+ }
}
- if (status->frame_count == 0) {
- /* The frame was not transmitted at all. */
- info->status.retry_count = 0;
- } else
- info->status.retry_count = status->frame_count
- - 1;
+
+ /* Call back to inform the ieee80211 subsystem about the
+ * status of the transmission.
+ * Some fields of txstat are already filled in dma_tx().
+ */
ieee80211_tx_status_irqsafe(dev->wl->hw, meta->skb);
/* skb is freed by ieee80211_tx_status_irqsafe() */
meta->skb = NULL;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff