From c6060be46fbda5af651b6ed2b85502ccbb3d9279 Mon Sep 17 00:00:00 2001 From: Jie Yang Date: Fri, 6 Nov 2009 00:32:05 -0800 Subject: atl1c: change atl1c_buffer struct and restructure clean atl1c_buffer procedure change atl1c_buffer struct, use "u16 flags" instead of "u16 state" to store more infomation for atl1c_buffer, and restructure clean atl1c_buffer procedure, add common api atl1c_clean_buffer. Signed-off-by: Jie Yang Signed-off-by: David S. Miller --- drivers/net/atl1c/atl1c.h | 22 +++++++++-- drivers/net/atl1c/atl1c_main.c | 84 +++++++++++++++++++++--------------------- 2 files changed, 61 insertions(+), 45 deletions(-) (limited to 'drivers/net/atl1c') diff --git a/drivers/net/atl1c/atl1c.h b/drivers/net/atl1c/atl1c.h index 2a1120ad2e74..a348a22551d9 100644 --- a/drivers/net/atl1c/atl1c.h +++ b/drivers/net/atl1c/atl1c.h @@ -470,12 +470,28 @@ struct atl1c_ring_header { struct atl1c_buffer { struct sk_buff *skb; /* socket buffer */ u16 length; /* rx buffer length */ - u16 state; /* state of buffer */ -#define ATL1_BUFFER_FREE 0 -#define ATL1_BUFFER_BUSY 1 + u16 flags; /* information of buffer */ +#define ATL1C_BUFFER_FREE 0x0001 +#define ATL1C_BUFFER_BUSY 0x0002 +#define ATL1C_BUFFER_STATE_MASK 0x0003 + +#define ATL1C_PCIMAP_SINGLE 0x0004 +#define ATL1C_PCIMAP_PAGE 0x0008 +#define ATL1C_PCIMAP_TYPE_MASK 0x000C + dma_addr_t dma; }; +#define ATL1C_SET_BUFFER_STATE(buff, state) do { \ + ((buff)->flags) &= ~ATL1C_BUFFER_STATE_MASK; \ + ((buff)->flags) |= (state); \ + } while (0) + +#define ATL1C_SET_PCIMAP_TYPE(buff, type) do { \ + ((buff)->flags) &= ~ATL1C_PCIMAP_TYPE_MASK; \ + ((buff)->flags) |= (type); \ + } while (0) + /* transimit packet descriptor (tpd) ring */ struct atl1c_tpd_ring { void *desc; /* descriptor ring virtual address */ diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c index 3b8801a39726..5ef9e23435f4 100644 --- a/drivers/net/atl1c/atl1c_main.c +++ b/drivers/net/atl1c/atl1c_main.c @@ -710,6 +710,29 @@ static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter) return 0; } +static inline void atl1c_clean_buffer(struct pci_dev *pdev, + struct atl1c_buffer *buffer_info, int in_irq) +{ + if (buffer_info->flags & ATL1C_BUFFER_FREE) + return; + if (buffer_info->dma) { + if (buffer_info->flags & ATL1C_PCIMAP_SINGLE) + pci_unmap_single(pdev, buffer_info->dma, + buffer_info->length, PCI_DMA_TODEVICE); + else if (buffer_info->flags & ATL1C_PCIMAP_PAGE) + pci_unmap_page(pdev, buffer_info->dma, + buffer_info->length, PCI_DMA_TODEVICE); + } + if (buffer_info->skb) { + if (in_irq) + dev_kfree_skb_irq(buffer_info->skb); + else + dev_kfree_skb(buffer_info->skb); + } + buffer_info->dma = 0; + buffer_info->skb = NULL; + ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); +} /* * atl1c_clean_tx_ring - Free Tx-skb * @adapter: board private structure @@ -725,22 +748,12 @@ static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter, ring_count = tpd_ring->count; for (index = 0; index < ring_count; index++) { buffer_info = &tpd_ring->buffer_info[index]; - if (buffer_info->state == ATL1_BUFFER_FREE) - continue; - if (buffer_info->dma) - pci_unmap_single(pdev, buffer_info->dma, - buffer_info->length, - PCI_DMA_TODEVICE); - if (buffer_info->skb) - dev_kfree_skb(buffer_info->skb); - buffer_info->dma = 0; - buffer_info->skb = NULL; - buffer_info->state = ATL1_BUFFER_FREE; + atl1c_clean_buffer(pdev, buffer_info, 0); } /* Zero out Tx-buffers */ memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) * - ring_count); + ring_count); atomic_set(&tpd_ring->next_to_clean, 0); tpd_ring->next_to_use = 0; } @@ -760,16 +773,7 @@ static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter) for (i = 0; i < adapter->num_rx_queues; i++) { for (j = 0; j < rfd_ring[i].count; j++) { buffer_info = &rfd_ring[i].buffer_info[j]; - if (buffer_info->state == ATL1_BUFFER_FREE) - continue; - if (buffer_info->dma) - pci_unmap_single(pdev, buffer_info->dma, - buffer_info->length, - PCI_DMA_FROMDEVICE); - if (buffer_info->skb) - dev_kfree_skb(buffer_info->skb); - buffer_info->state = ATL1_BUFFER_FREE; - buffer_info->skb = NULL; + atl1c_clean_buffer(pdev, buffer_info, 0); } /* zero out the descriptor ring */ memset(rfd_ring[i].desc, 0, rfd_ring[i].size); @@ -796,7 +800,8 @@ static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) atomic_set(&tpd_ring[i].next_to_clean, 0); buffer_info = tpd_ring[i].buffer_info; for (j = 0; j < tpd_ring->count; j++) - buffer_info[i].state = ATL1_BUFFER_FREE; + ATL1C_SET_BUFFER_STATE(&buffer_info[i], + ATL1C_BUFFER_FREE); } for (i = 0; i < adapter->num_rx_queues; i++) { rfd_ring[i].next_to_use = 0; @@ -805,7 +810,7 @@ static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter) rrd_ring[i].next_to_clean = 0; for (j = 0; j < rfd_ring[i].count; j++) { buffer_info = &rfd_ring[i].buffer_info[j]; - buffer_info->state = ATL1_BUFFER_FREE; + ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE); } } } @@ -1447,6 +1452,7 @@ static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *) &adapter->tpd_ring[type]; struct atl1c_buffer *buffer_info; + struct pci_dev *pdev = adapter->pdev; u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean); u16 hw_next_to_clean; u16 shift; @@ -1462,16 +1468,7 @@ static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter, while (next_to_clean != hw_next_to_clean) { buffer_info = &tpd_ring->buffer_info[next_to_clean]; - if (buffer_info->state == ATL1_BUFFER_BUSY) { - pci_unmap_page(adapter->pdev, buffer_info->dma, - buffer_info->length, PCI_DMA_TODEVICE); - buffer_info->dma = 0; - if (buffer_info->skb) { - dev_kfree_skb_irq(buffer_info->skb); - buffer_info->skb = NULL; - } - buffer_info->state = ATL1_BUFFER_FREE; - } + atl1c_clean_buffer(pdev, buffer_info, 1); if (++next_to_clean == tpd_ring->count) next_to_clean = 0; atomic_set(&tpd_ring->next_to_clean, next_to_clean); @@ -1587,7 +1584,7 @@ static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, const int ringid buffer_info = &rfd_ring->buffer_info[rfd_next_to_use]; next_info = &rfd_ring->buffer_info[next_next]; - while (next_info->state == ATL1_BUFFER_FREE) { + while (next_info->flags & ATL1C_BUFFER_FREE) { rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use); skb = dev_alloc_skb(adapter->rx_buffer_len); @@ -1603,12 +1600,13 @@ static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, const int ringid * the 14 byte MAC header is removed */ vir_addr = skb->data; - buffer_info->state = ATL1_BUFFER_BUSY; + ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); buffer_info->skb = skb; buffer_info->length = adapter->rx_buffer_len; buffer_info->dma = pci_map_single(pdev, vir_addr, buffer_info->length, PCI_DMA_FROMDEVICE); + ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE); rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma); rfd_next_to_use = next_next; if (++next_next == rfd_ring->count) @@ -1653,7 +1651,8 @@ static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring, RRS_RX_RFD_INDEX_MASK; for (i = 0; i < num; i++) { buffer_info[rfd_index].skb = NULL; - buffer_info[rfd_index].state = ATL1_BUFFER_FREE; + ATL1C_SET_BUFFER_STATE(&buffer_info[rfd_index], + ATL1C_BUFFER_FREE); if (++rfd_index == rfd_ring->count) rfd_index = 0; } @@ -1967,7 +1966,8 @@ static void atl1c_tx_map(struct atl1c_adapter *adapter, buffer_info->length = map_len; buffer_info->dma = pci_map_single(adapter->pdev, skb->data, hdr_len, PCI_DMA_TODEVICE); - buffer_info->state = ATL1_BUFFER_BUSY; + ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); + ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE); mapped_len += map_len; use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); use_tpd->buffer_len = cpu_to_le16(buffer_info->length); @@ -1987,8 +1987,8 @@ static void atl1c_tx_map(struct atl1c_adapter *adapter, buffer_info->dma = pci_map_single(adapter->pdev, skb->data + mapped_len, buffer_info->length, PCI_DMA_TODEVICE); - buffer_info->state = ATL1_BUFFER_BUSY; - + ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); + ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE); use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); use_tpd->buffer_len = cpu_to_le16(buffer_info->length); } @@ -2008,8 +2008,8 @@ static void atl1c_tx_map(struct atl1c_adapter *adapter, frag->page_offset, buffer_info->length, PCI_DMA_TODEVICE); - buffer_info->state = ATL1_BUFFER_BUSY; - + ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY); + ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE); use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma); use_tpd->buffer_len = cpu_to_le16(buffer_info->length); 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