From fb70ed67107e04005d36f6f462bb048bf9cbe373 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Tue, 6 Oct 2009 15:48:25 +0100 Subject: [PATCH] Staging: et131x: clean up WORD2 usage A little more complex but again move the structure and typedef into into the documentation Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/staging/et131x/et1310_tx.c | 23 +++++++++++------------ drivers/staging/et131x/et1310_tx.h | 33 +++++++++------------------------ 2 files changed, 20 insertions(+), 36 deletions(-) diff --git a/drivers/staging/et131x/et1310_tx.c b/drivers/staging/et131x/et1310_tx.c index 5938dfa..7926004 100644 --- a/drivers/staging/et131x/et1310_tx.c +++ b/drivers/staging/et131x/et1310_tx.c @@ -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) >= diff --git a/drivers/staging/et131x/et1310_tx.h b/drivers/staging/et131x/et1310_tx.h index 142b6ea..e2e1314 100644 --- a/drivers/staging/et131x/et1310_tx.h +++ b/drivers/staging/et131x/et1310_tx.h @@ -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; -- 2.7.4