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Subject[PATCH net-next]atl1c:add pci map direction in atl1c_buffer flags
Date
From: Jie Yang <jie.yang@atheros.com>

add pci map direction in atl1c_buffer flags, it is used when call pci_unmap
apis.
Signed-off-by: Jie Yang <jie.yang@atheros.com>
---

drivers/net/atl1c/atl1c.h | 11 ++++++++---
drivers/net/atl1c/atl1c_main.c | 22 ++++++++++++++++------
2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/drivers/net/atl1c/atl1c.h b/drivers/net/atl1c/atl1c.h
index a348a22..7e09084 100644
--- a/drivers/net/atl1c/atl1c.h
+++ b/drivers/net/atl1c/atl1c.h
@@ -479,6 +479,9 @@ struct atl1c_buffer {
#define ATL1C_PCIMAP_PAGE 0x0008
#define ATL1C_PCIMAP_TYPE_MASK 0x000C

+#define ATL1C_PCIMAP_TODEVICE 0x0010
+#define ATL1C_PCIMAP_FROMDEVICE 0x0020
+#define ATL1C_PCIMAP_DIRECTION_MASK 0x0030
dma_addr_t dma;
};

@@ -487,9 +490,11 @@ struct atl1c_buffer {
((buff)->flags) |= (state); \
} while (0)

-#define ATL1C_SET_PCIMAP_TYPE(buff, type) do { \
- ((buff)->flags) &= ~ATL1C_PCIMAP_TYPE_MASK; \
- ((buff)->flags) |= (type); \
+#define ATL1C_SET_PCIMAP_TYPE(buff, type, direction) do { \
+ ((buff)->flags) &= ~ATL1C_PCIMAP_TYPE_MASK; \
+ ((buff)->flags) |= (type); \
+ ((buff)->flags) &= ~ATL1C_PCIMAP_DIRECTION_MASK; \
+ ((buff)->flags) |= (direction); \
} while (0)

/* transimit packet descriptor (tpd) ring */
diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c
index 1e2f57d..1098dad 100644
--- a/drivers/net/atl1c/atl1c_main.c
+++ b/drivers/net/atl1c/atl1c_main.c
@@ -713,15 +713,21 @@ static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter)
static inline void atl1c_clean_buffer(struct pci_dev *pdev,
struct atl1c_buffer *buffer_info, int in_irq)
{
+ u16 pci_driection;
if (buffer_info->flags & ATL1C_BUFFER_FREE)
return;
if (buffer_info->dma) {
+ if (buffer_info->flags & ATL1C_PCIMAP_FROMDEVICE)
+ pci_driection = PCI_DMA_FROMDEVICE;
+ else
+ pci_driection = PCI_DMA_TODEVICE;
+
if (buffer_info->flags & ATL1C_PCIMAP_SINGLE)
pci_unmap_single(pdev, buffer_info->dma,
- buffer_info->length, PCI_DMA_TODEVICE);
+ buffer_info->length, pci_driection);
else if (buffer_info->flags & ATL1C_PCIMAP_PAGE)
pci_unmap_page(pdev, buffer_info->dma,
- buffer_info->length, PCI_DMA_TODEVICE);
+ buffer_info->length, pci_driection);
}
if (buffer_info->skb) {
if (in_irq)
@@ -1606,7 +1612,8 @@ static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, const int ringid
buffer_info->dma = pci_map_single(pdev, vir_addr,
buffer_info->length,
PCI_DMA_FROMDEVICE);
- ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE);
+ ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE,
+ ATL1C_PCIMAP_FROMDEVICE);
rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
rfd_next_to_use = next_next;
if (++next_next == rfd_ring->count)
@@ -1967,7 +1974,8 @@ static void atl1c_tx_map(struct atl1c_adapter *adapter,
buffer_info->dma = pci_map_single(adapter->pdev,
skb->data, hdr_len, PCI_DMA_TODEVICE);
ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY);
- ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE);
+ ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE,
+ ATL1C_PCIMAP_TODEVICE);
mapped_len += map_len;
use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
use_tpd->buffer_len = cpu_to_le16(buffer_info->length);
@@ -1988,7 +1996,8 @@ static void atl1c_tx_map(struct atl1c_adapter *adapter,
pci_map_single(adapter->pdev, skb->data + mapped_len,
buffer_info->length, PCI_DMA_TODEVICE);
ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY);
- ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE);
+ ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE,
+ ATL1C_PCIMAP_TODEVICE);
use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
use_tpd->buffer_len = cpu_to_le16(buffer_info->length);
}
@@ -2009,7 +2018,8 @@ static void atl1c_tx_map(struct atl1c_adapter *adapter,
buffer_info->length,
PCI_DMA_TODEVICE);
ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY);
- ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE);
+ ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE,
+ ATL1C_PCIMAP_TODEVICE);
use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
use_tpd->buffer_len = cpu_to_le16(buffer_info->length);
}

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