ath9k: convert to use bus-agnostic DMA routines
Convert to use bus-agnostic DMA routines to make it usable on AHB bus as well.
Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Tested-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c
index f02b099..be1d84a 100644
--- a/drivers/net/wireless/ath9k/beacon.c
+++ b/drivers/net/wireless/ath9k/beacon.c
@@ -164,9 +164,9 @@
bf = avp->av_bcbuf;
skb = (struct sk_buff *)bf->bf_mpdu;
if (skb) {
- pci_unmap_single(to_pci_dev(sc->dev), bf->bf_dmacontext,
+ dma_unmap_single(sc->dev, bf->bf_dmacontext,
skb->len,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
}
@@ -188,15 +188,14 @@
}
bf->bf_buf_addr = bf->bf_dmacontext =
- pci_map_single(to_pci_dev(sc->dev), skb->data,
+ dma_map_single(sc->dev, skb->data,
skb->len,
- PCI_DMA_TODEVICE);
- if (unlikely(pci_dma_mapping_error(to_pci_dev(sc->dev),
- bf->bf_buf_addr))) {
+ DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
DPRINTF(sc, ATH_DBG_CONFIG,
- "pci_dma_mapping_error() on beaconing\n");
+ "dma_mapping_error() on beaconing\n");
return NULL;
}
@@ -344,9 +343,9 @@
bf = avp->av_bcbuf;
if (bf->bf_mpdu != NULL) {
skb = (struct sk_buff *)bf->bf_mpdu;
- pci_unmap_single(to_pci_dev(sc->dev), bf->bf_dmacontext,
+ dma_unmap_single(sc->dev, bf->bf_dmacontext,
skb->len,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
}
@@ -403,15 +402,14 @@
bf->bf_mpdu = skb;
bf->bf_buf_addr = bf->bf_dmacontext =
- pci_map_single(to_pci_dev(sc->dev), skb->data,
+ dma_map_single(sc->dev, skb->data,
skb->len,
- PCI_DMA_TODEVICE);
- if (unlikely(pci_dma_mapping_error(to_pci_dev(sc->dev),
- bf->bf_buf_addr))) {
+ DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
DPRINTF(sc, ATH_DBG_CONFIG,
- "pci_dma_mapping_error() on beacon alloc\n");
+ "dma_mapping_error() on beacon alloc\n");
return -ENOMEM;
}
@@ -431,10 +429,9 @@
bf = avp->av_bcbuf;
if (bf->bf_mpdu != NULL) {
struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
- pci_unmap_single(to_pci_dev(sc->dev),
- bf->bf_dmacontext,
+ dma_unmap_single(sc->dev, bf->bf_dmacontext,
skb->len,
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
}
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 44931e4..ebf0467 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -1715,9 +1715,8 @@
}
/* allocate descriptors */
- dd->dd_desc = pci_alloc_consistent(to_pci_dev(sc->dev),
- dd->dd_desc_len,
- &dd->dd_desc_paddr);
+ dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
+ &dd->dd_desc_paddr, GFP_ATOMIC);
if (dd->dd_desc == NULL) {
error = -ENOMEM;
goto fail;
@@ -1763,8 +1762,8 @@
}
return 0;
fail2:
- pci_free_consistent(to_pci_dev(sc->dev),
- dd->dd_desc_len, dd->dd_desc, dd->dd_desc_paddr);
+ dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
+ dd->dd_desc_paddr);
fail:
memset(dd, 0, sizeof(*dd));
return error;
@@ -1777,8 +1776,8 @@
struct ath_descdma *dd,
struct list_head *head)
{
- pci_free_consistent(to_pci_dev(sc->dev),
- dd->dd_desc_len, dd->dd_desc, dd->dd_desc_paddr);
+ dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
+ dd->dd_desc_paddr);
INIT_LIST_HEAD(head);
kfree(dd->dd_bufptr);
diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c
index 645fae2..648bb49 100644
--- a/drivers/net/wireless/ath9k/recv.c
+++ b/drivers/net/wireless/ath9k/recv.c
@@ -291,16 +291,15 @@
}
bf->bf_mpdu = skb;
- bf->bf_buf_addr = pci_map_single(to_pci_dev(sc->dev),
- skb->data,
+ bf->bf_buf_addr = dma_map_single(sc->dev, skb->data,
sc->rx.bufsize,
- PCI_DMA_FROMDEVICE);
- if (unlikely(pci_dma_mapping_error(to_pci_dev(sc->dev),
+ DMA_FROM_DEVICE);
+ if (unlikely(dma_mapping_error(sc->dev,
bf->bf_buf_addr))) {
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
DPRINTF(sc, ATH_DBG_CONFIG,
- "pci_dma_mapping_error() on RX init\n");
+ "dma_mapping_error() on RX init\n");
error = -ENOMEM;
break;
}
@@ -525,10 +524,9 @@
* 1. accessing the frame
* 2. requeueing the same buffer to h/w
*/
- pci_dma_sync_single_for_cpu(to_pci_dev(sc->dev),
- bf->bf_buf_addr,
+ dma_sync_single_for_cpu(sc->dev, bf->bf_buf_addr,
sc->rx.bufsize,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
/*
* If we're asked to flush receive queue, directly
@@ -559,9 +557,9 @@
goto requeue;
/* Unmap the frame */
- pci_unmap_single(to_pci_dev(sc->dev), bf->bf_buf_addr,
+ dma_unmap_single(sc->dev, bf->bf_buf_addr,
sc->rx.bufsize,
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
skb_put(skb, ds->ds_rxstat.rs_datalen);
skb->protocol = cpu_to_be16(ETH_P_CONTROL);
@@ -607,16 +605,15 @@
/* We will now give hardware our shiny new allocated skb */
bf->bf_mpdu = requeue_skb;
- bf->bf_buf_addr = pci_map_single(to_pci_dev(sc->dev),
- requeue_skb->data,
+ bf->bf_buf_addr = dma_map_single(sc->dev, requeue_skb->data,
sc->rx.bufsize,
- PCI_DMA_FROMDEVICE);
- if (unlikely(pci_dma_mapping_error(to_pci_dev(sc->dev),
+ DMA_FROM_DEVICE);
+ if (unlikely(dma_mapping_error(sc->dev,
bf->bf_buf_addr))) {
dev_kfree_skb_any(requeue_skb);
bf->bf_mpdu = NULL;
DPRINTF(sc, ATH_DBG_CONFIG,
- "pci_dma_mapping_error() on RX\n");
+ "dma_mapping_error() on RX\n");
break;
}
bf->bf_dmacontext = bf->bf_buf_addr;
diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c
index 27cb9d5..522078d 100644
--- a/drivers/net/wireless/ath9k/xmit.c
+++ b/drivers/net/wireless/ath9k/xmit.c
@@ -340,10 +340,8 @@
}
/* Unmap this frame */
- pci_unmap_single(to_pci_dev(sc->dev),
- bf->bf_dmacontext,
- skb->len,
- PCI_DMA_TODEVICE);
+ dma_unmap_single(sc->dev, bf->bf_dmacontext, skb->len, DMA_TO_DEVICE);
+
/* complete this frame */
ath_tx_complete(sc, skb, &tx_status);
@@ -1716,13 +1714,12 @@
/* DMA setup */
bf->bf_mpdu = skb;
- bf->bf_dmacontext = pci_map_single(to_pci_dev(sc->dev), skb->data,
- skb->len, PCI_DMA_TODEVICE);
- if (unlikely(pci_dma_mapping_error(to_pci_dev(sc->dev),
- bf->bf_dmacontext))) {
+ bf->bf_dmacontext = dma_map_single(sc->dev, skb->data,
+ skb->len, DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(sc->dev, bf->bf_dmacontext))) {
bf->bf_mpdu = NULL;
DPRINTF(sc, ATH_DBG_CONFIG,
- "pci_dma_mapping_error() on TX\n");
+ "dma_mapping_error() on TX\n");
return -ENOMEM;
}