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Staging: et131x: clean up WORD2 usage

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A little more complex but again move the structure and typedef into into the
documentation

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox 2009-10-06 15:48:25 +01:00 committed by Greg Kroah-Hartman
parent b44207ab43
commit fb70ed6710
2 changed files with 20 additions and 36 deletions
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23
drivers/staging/et131x/et1310_tx.c
View file

@ -516,9 +516,10 @@ static int nic_send_packet(struct et131x_adapter *etdev, PMP_TCB pMpTcb)
*/
if ((pPacket->len - pPacket->data_len) <= 1514) {
CurDesc[FragmentNumber].DataBufferPtrHigh = 0;
CurDesc[FragmentNumber].word2.bits.
length_in_bytes =
pPacket->len - pPacket->data_len;
/* Low 16bits are length, high is vlan and
unused currently so zero */
CurDesc[FragmentNumber].word2 =
pPacket->len - pPacket->data_len;
/* NOTE: Here, the dma_addr_t returned from
* pci_map_single() is implicitly cast as a
@ -536,9 +537,8 @@ static int nic_send_packet(struct et131x_adapter *etdev, PMP_TCB pMpTcb)
PCI_DMA_TODEVICE);
} else {
CurDesc[FragmentNumber].DataBufferPtrHigh = 0;
CurDesc[FragmentNumber].word2.bits.
length_in_bytes =
((pPacket->len - pPacket->data_len) / 2);
CurDesc[FragmentNumber].word2 =
(pPacket->len - pPacket->data_len) / 2;
/* NOTE: Here, the dma_addr_t returned from
* pci_map_single() is implicitly cast as a
@ -556,9 +556,8 @@ static int nic_send_packet(struct et131x_adapter *etdev, PMP_TCB pMpTcb)
PCI_DMA_TODEVICE);
CurDesc[FragmentNumber].DataBufferPtrHigh = 0;
CurDesc[FragmentNumber].word2.bits.
length_in_bytes =
((pPacket->len - pPacket->data_len) / 2);
CurDesc[FragmentNumber].word2 =
(pPacket->len - pPacket->data_len) / 2;
/* NOTE: Here, the dma_addr_t returned from
* pci_map_single() is implicitly cast as a
@ -579,8 +578,8 @@ static int nic_send_packet(struct et131x_adapter *etdev, PMP_TCB pMpTcb)
}
} else {
CurDesc[FragmentNumber].DataBufferPtrHigh = 0;
CurDesc[FragmentNumber].word2.bits.length_in_bytes =
pFragList[loopIndex - 1].size;
CurDesc[FragmentNumber].word2 =
pFragList[loopIndex - 1].size;
/* NOTE: Here, the dma_addr_t returned from
* pci_map_page() is implicitly cast as a uint32_t.
@ -724,7 +723,7 @@ inline void et131x_free_send_packet(struct et131x_adapter *etdev,
pci_unmap_single(etdev->pdev,
desc->DataBufferPtrLow,
desc->word2.value, PCI_DMA_TODEVICE);
desc->word2, PCI_DMA_TODEVICE);
add_10bit(&pMpTcb->WrIndexStart, 1);
if (INDEX10(pMpTcb->WrIndexStart) >=

33
drivers/staging/et131x/et1310_tx.h
View file

@ -63,29 +63,14 @@
/* Typedefs for Tx Descriptor Ring */
/*
* TXDESC_WORD2_t structure holds part of the control bits in the Tx Descriptor
* ring for the ET-1310
*/
typedef union _txdesc_word2_t {
u32 value;
struct {
#ifdef _BIT_FIELDS_HTOL
u32 vlan_prio:3; /* bits 29-31(VLAN priority) */
u32 vlan_cfi:1; /* bit 28(cfi) */
u32 vlan_tag:12; /* bits 16-27(VLAN tag) */
u32 length_in_bytes:16; /* bits 0-15(packet length) */
#else
u32 length_in_bytes:16; /* bits 0-15(packet length) */
u32 vlan_tag:12; /* bits 16-27(VLAN tag) */
u32 vlan_cfi:1; /* bit 28(cfi) */
u32 vlan_prio:3; /* bits 29-31(VLAN priority) */
#endif /* _BIT_FIELDS_HTOL */
} bits;
} TXDESC_WORD2_t, *PTXDESC_WORD2_t;
/*
* word 3 of the control bits in the Tx Descriptor ring for the
* ET-1310
* word 2 of the control bits in the Tx Descriptor ring for the ET-1310
*
* 0-15: length of packet
* 16-27: VLAN tag
* 28: VLAN CFI
* 29-31: VLAN priority
*
* word 3 of the control bits in the Tx Descriptor ring for the ET-1310
*
* 0: last packet in the sequence
* 1: first packet in the sequence
@ -108,7 +93,7 @@ typedef union _txdesc_word2_t {
typedef struct _tx_desc_entry_t {
u32 DataBufferPtrHigh;
u32 DataBufferPtrLow;
TXDESC_WORD2_t word2; /* control words how to xmit the */
u32 word2; /* control words how to xmit the */
u32 word3; /* data (detailed above) */
} TX_DESC_ENTRY_t, *PTX_DESC_ENTRY_t;