aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/b43/dma.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/b43/dma.c')
-rw-r--r--drivers/net/wireless/b43/dma.c77
1 files changed, 53 insertions, 24 deletions
diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 47d44bcff37d..83cba22ac6e8 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -4,7 +4,7 @@
DMA ringbuffer and descriptor allocation/management
- Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
+ Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch>
Some code in this file is derived from the b44.c driver
Copyright (C) 2002 David S. Miller
@@ -174,7 +174,7 @@ static void op64_fill_descriptor(struct b43_dmaring *ring,
addrhi = (((u64) dmaaddr >> 32) & ~SSB_DMA_TRANSLATION_MASK);
addrext = (((u64) dmaaddr >> 32) & SSB_DMA_TRANSLATION_MASK)
>> SSB_DMA_TRANSLATION_SHIFT;
- addrhi |= (ring->dev->dma.translation << 1);
+ addrhi |= ring->dev->dma.translation;
if (slot == ring->nr_slots - 1)
ctl0 |= B43_DMA64_DCTL0_DTABLEEND;
if (start)
@@ -333,10 +333,10 @@ static inline
dma_addr_t dmaaddr;
if (tx) {
- dmaaddr = dma_map_single(ring->dev->sdev->dma_dev,
+ dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
buf, len, DMA_TO_DEVICE);
} else {
- dmaaddr = dma_map_single(ring->dev->sdev->dma_dev,
+ dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
buf, len, DMA_FROM_DEVICE);
}
@@ -348,10 +348,10 @@ static inline
dma_addr_t addr, size_t len, int tx)
{
if (tx) {
- dma_unmap_single(ring->dev->sdev->dma_dev,
+ dma_unmap_single(ring->dev->dev->dma_dev,
addr, len, DMA_TO_DEVICE);
} else {
- dma_unmap_single(ring->dev->sdev->dma_dev,
+ dma_unmap_single(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
}
@@ -361,7 +361,7 @@ static inline
dma_addr_t addr, size_t len)
{
B43_WARN_ON(ring->tx);
- dma_sync_single_for_cpu(ring->dev->sdev->dma_dev,
+ dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
@@ -370,7 +370,7 @@ static inline
dma_addr_t addr, size_t len)
{
B43_WARN_ON(ring->tx);
- dma_sync_single_for_device(ring->dev->sdev->dma_dev,
+ dma_sync_single_for_device(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
@@ -401,7 +401,7 @@ static int alloc_ringmemory(struct b43_dmaring *ring)
*/
if (ring->type == B43_DMA_64BIT)
flags |= GFP_DMA;
- ring->descbase = dma_alloc_coherent(ring->dev->sdev->dma_dev,
+ ring->descbase = dma_alloc_coherent(ring->dev->dev->dma_dev,
B43_DMA_RINGMEMSIZE,
&(ring->dmabase), flags);
if (!ring->descbase) {
@@ -415,7 +415,7 @@ static int alloc_ringmemory(struct b43_dmaring *ring)
static void free_ringmemory(struct b43_dmaring *ring)
{
- dma_free_coherent(ring->dev->sdev->dma_dev, B43_DMA_RINGMEMSIZE,
+ dma_free_coherent(ring->dev->dev->dma_dev, B43_DMA_RINGMEMSIZE,
ring->descbase, ring->dmabase);
}
@@ -523,7 +523,7 @@ static bool b43_dma_mapping_error(struct b43_dmaring *ring,
dma_addr_t addr,
size_t buffersize, bool dma_to_device)
{
- if (unlikely(dma_mapping_error(ring->dev->sdev->dma_dev, addr)))
+ if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
return 1;
switch (ring->type) {
@@ -659,6 +659,7 @@ static int dmacontroller_setup(struct b43_dmaring *ring)
u32 value;
u32 addrext;
u32 trans = ring->dev->dma.translation;
+ bool parity = ring->dev->dma.parity;
if (ring->tx) {
if (ring->type == B43_DMA_64BIT) {
@@ -669,13 +670,15 @@ static int dmacontroller_setup(struct b43_dmaring *ring)
value = B43_DMA64_TXENABLE;
value |= (addrext << B43_DMA64_TXADDREXT_SHIFT)
& B43_DMA64_TXADDREXT_MASK;
+ if (!parity)
+ value |= B43_DMA64_TXPARITYDISABLE;
b43_dma_write(ring, B43_DMA64_TXCTL, value);
b43_dma_write(ring, B43_DMA64_TXRINGLO,
(ringbase & 0xFFFFFFFF));
b43_dma_write(ring, B43_DMA64_TXRINGHI,
((ringbase >> 32) &
~SSB_DMA_TRANSLATION_MASK)
- | (trans << 1));
+ | trans);
} else {
u32 ringbase = (u32) (ring->dmabase);
@@ -684,6 +687,8 @@ static int dmacontroller_setup(struct b43_dmaring *ring)
value = B43_DMA32_TXENABLE;
value |= (addrext << B43_DMA32_TXADDREXT_SHIFT)
& B43_DMA32_TXADDREXT_MASK;
+ if (!parity)
+ value |= B43_DMA32_TXPARITYDISABLE;
b43_dma_write(ring, B43_DMA32_TXCTL, value);
b43_dma_write(ring, B43_DMA32_TXRING,
(ringbase & ~SSB_DMA_TRANSLATION_MASK)
@@ -702,13 +707,15 @@ static int dmacontroller_setup(struct b43_dmaring *ring)
value |= B43_DMA64_RXENABLE;
value |= (addrext << B43_DMA64_RXADDREXT_SHIFT)
& B43_DMA64_RXADDREXT_MASK;
+ if (!parity)
+ value |= B43_DMA64_RXPARITYDISABLE;
b43_dma_write(ring, B43_DMA64_RXCTL, value);
b43_dma_write(ring, B43_DMA64_RXRINGLO,
(ringbase & 0xFFFFFFFF));
b43_dma_write(ring, B43_DMA64_RXRINGHI,
((ringbase >> 32) &
~SSB_DMA_TRANSLATION_MASK)
- | (trans << 1));
+ | trans);
b43_dma_write(ring, B43_DMA64_RXINDEX, ring->nr_slots *
sizeof(struct b43_dmadesc64));
} else {
@@ -720,6 +727,8 @@ static int dmacontroller_setup(struct b43_dmaring *ring)
value |= B43_DMA32_RXENABLE;
value |= (addrext << B43_DMA32_RXADDREXT_SHIFT)
& B43_DMA32_RXADDREXT_MASK;
+ if (!parity)
+ value |= B43_DMA32_RXPARITYDISABLE;
b43_dma_write(ring, B43_DMA32_RXCTL, value);
b43_dma_write(ring, B43_DMA32_RXRING,
(ringbase & ~SSB_DMA_TRANSLATION_MASK)
@@ -757,14 +766,14 @@ static void dmacontroller_cleanup(struct b43_dmaring *ring)
static void free_all_descbuffers(struct b43_dmaring *ring)
{
- struct b43_dmadesc_generic *desc;
struct b43_dmadesc_meta *meta;
int i;
if (!ring->used_slots)
return;
for (i = 0; i < ring->nr_slots; i++) {
- desc = ring->ops->idx2desc(ring, i, &meta);
+ /* get meta - ignore returned value */
+ ring->ops->idx2desc(ring, i, &meta);
if (!meta->skb || b43_dma_ptr_is_poisoned(meta->skb)) {
B43_WARN_ON(!ring->tx);
@@ -869,7 +878,7 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
goto err_kfree_meta;
/* test for ability to dma to txhdr_cache */
- dma_test = dma_map_single(dev->sdev->dma_dev,
+ dma_test = dma_map_single(dev->dev->dma_dev,
ring->txhdr_cache,
b43_txhdr_size(dev),
DMA_TO_DEVICE);
@@ -884,7 +893,7 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
if (!ring->txhdr_cache)
goto err_kfree_meta;
- dma_test = dma_map_single(dev->sdev->dma_dev,
+ dma_test = dma_map_single(dev->dev->dma_dev,
ring->txhdr_cache,
b43_txhdr_size(dev),
DMA_TO_DEVICE);
@@ -898,7 +907,7 @@ struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
}
}
- dma_unmap_single(dev->sdev->dma_dev,
+ dma_unmap_single(dev->dev->dma_dev,
dma_test, b43_txhdr_size(dev),
DMA_TO_DEVICE);
}
@@ -1013,9 +1022,9 @@ static int b43_dma_set_mask(struct b43_wldev *dev, u64 mask)
/* 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 = dma_set_mask(dev->sdev->dma_dev, mask);
+ err = dma_set_mask(dev->dev->dma_dev, mask);
if (!err) {
- err = dma_set_coherent_mask(dev->sdev->dma_dev, mask);
+ err = dma_set_coherent_mask(dev->dev->dma_dev, mask);
if (!err)
break;
}
@@ -1055,7 +1064,26 @@ int b43_dma_init(struct b43_wldev *dev)
err = b43_dma_set_mask(dev, dmamask);
if (err)
return err;
- dma->translation = ssb_dma_translation(dev->sdev);
+
+ switch (dev->dev->bus_type) {
+#ifdef CONFIG_B43_BCMA
+ case B43_BUS_BCMA:
+ dma->translation = bcma_core_dma_translation(dev->dev->bdev);
+ break;
+#endif
+#ifdef CONFIG_B43_SSB
+ case B43_BUS_SSB:
+ dma->translation = ssb_dma_translation(dev->dev->sdev);
+ break;
+#endif
+ }
+
+ dma->parity = true;
+#ifdef CONFIG_B43_BCMA
+ /* TODO: find out which SSB devices need disabling parity */
+ if (dev->dev->bus_type == B43_BUS_BCMA)
+ dma->parity = false;
+#endif
err = -ENOMEM;
/* setup TX DMA channels. */
@@ -1085,7 +1113,7 @@ int b43_dma_init(struct b43_wldev *dev)
goto err_destroy_mcast;
/* No support for the TX status DMA ring. */
- B43_WARN_ON(dev->sdev->id.revision < 5);
+ B43_WARN_ON(dev->dev->core_rev < 5);
b43dbg(dev->wl, "%u-bit DMA initialized\n",
(unsigned int)type);
@@ -1388,7 +1416,6 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev,
{
const struct b43_dma_ops *ops;
struct b43_dmaring *ring;
- struct b43_dmadesc_generic *desc;
struct b43_dmadesc_meta *meta;
int slot, firstused;
bool frame_succeed;
@@ -1416,7 +1443,8 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev,
ops = ring->ops;
while (1) {
B43_WARN_ON(slot < 0 || slot >= ring->nr_slots);
- desc = ops->idx2desc(ring, slot, &meta);
+ /* get meta - ignore returned value */
+ ops->idx2desc(ring, slot, &meta);
if (b43_dma_ptr_is_poisoned(meta->skb)) {
b43dbg(dev->wl, "Poisoned TX slot %d (first=%d) "
@@ -1600,6 +1628,7 @@ void b43_dma_rx(struct b43_dmaring *ring)
dma_rx(ring, &slot);
update_max_used_slots(ring, ++used_slots);
}
+ wmb();
ops->set_current_rxslot(ring, slot);
ring->current_slot = slot;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.