From: Alan Cox Date: Tue, 6 Oct 2009 14:48:49 +0000 (+0100) Subject: Staging: et131x: pci_alloc_consistent DMA alignment is guaranteed X-Git-Tag: v2.6.33-rc1~313^2~131 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9c60684b723906691e814e1bcfadb9f32bf2cc4d;p=karo-tx-linux.git Staging: et131x: pci_alloc_consistent DMA alignment is guaranteed So we can remove this alignment work. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/et131x/et1310_rx.c b/drivers/staging/et131x/et1310_rx.c index c0695b041f30..8f22bb969e89 100644 --- a/drivers/staging/et131x/et1310_rx.c +++ b/drivers/staging/et131x/et1310_rx.c @@ -342,7 +342,7 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter) sizeof(PKT_STAT_DESC_t) * adapter->RxRing.PsrNumEntries; rx_ring->pPSRingVa = pci_alloc_consistent(adapter->pdev, - pktStatRingSize + 0x0fff, + pktStatRingSize, &rx_ring->pPSRingPa); if (!rx_ring->pPSRingVa) { @@ -350,45 +350,26 @@ int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter) "Cannot alloc memory for Packet Status Ring\n"); return -ENOMEM; } + printk("PSR %lx\n", (unsigned long) rx_ring->pPSRingPa); - /* Save physical address - * + /* * NOTE : pci_alloc_consistent(), used above to alloc DMA regions, * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses * are ever returned, make sure the high part is retrieved here before * storing the adjusted address. */ - rx_ring->pPSRingRealPa = rx_ring->pPSRingPa; - - /* Align Packet Status Ring on a 4K boundary */ - et131x_align_allocated_memory(adapter, - &rx_ring->pPSRingRealPa, - &rx_ring->pPSRingOffset, 0x0FFF); - - rx_ring->pPSRingVa = (void *)((uint8_t *) rx_ring->pPSRingVa + - rx_ring->pPSRingOffset); /* Allocate an area of memory for writeback of status information */ rx_ring->pRxStatusVa = pci_alloc_consistent(adapter->pdev, - sizeof(RX_STATUS_BLOCK_t) + - 0x7, &rx_ring->pRxStatusPa); + sizeof(RX_STATUS_BLOCK_t), + &rx_ring->pRxStatusPa); if (!rx_ring->pRxStatusVa) { dev_err(&adapter->pdev->dev, "Cannot alloc memory for Status Block\n"); return -ENOMEM; } - - /* Save physical address */ - rx_ring->RxStatusRealPA = rx_ring->pRxStatusPa; - - /* Align write back on an 8 byte boundary */ - et131x_align_allocated_memory(adapter, - &rx_ring->RxStatusRealPA, - &rx_ring->RxStatusOffset, 0x07); - - rx_ring->pRxStatusVa = (void *)((uint8_t *) rx_ring->pRxStatusVa + - rx_ring->RxStatusOffset); rx_ring->NumRfd = NIC_DEFAULT_NUM_RFD; + printk("PRS %lx\n", (unsigned long)rx_ring->pRxStatusPa); /* Recv * pci_pool_create initializes a lookaside list. After successful @@ -523,14 +504,10 @@ void et131x_rx_dma_memory_free(struct et131x_adapter *adapter) /* Free Packet Status Ring */ if (rx_ring->pPSRingVa) { - rx_ring->pPSRingVa = (void *)((uint8_t *) rx_ring->pPSRingVa - - rx_ring->pPSRingOffset); - pktStatRingSize = sizeof(PKT_STAT_DESC_t) * adapter->RxRing.PsrNumEntries; - pci_free_consistent(adapter->pdev, - pktStatRingSize + 0x0fff, + pci_free_consistent(adapter->pdev, pktStatRingSize, rx_ring->pPSRingVa, rx_ring->pPSRingPa); rx_ring->pPSRingVa = NULL; @@ -538,11 +515,8 @@ void et131x_rx_dma_memory_free(struct et131x_adapter *adapter) /* Free area of memory for the writeback of status information */ if (rx_ring->pRxStatusVa) { - rx_ring->pRxStatusVa = (void *)((uint8_t *) - rx_ring->pRxStatusVa - rx_ring->RxStatusOffset); - pci_free_consistent(adapter->pdev, - sizeof(RX_STATUS_BLOCK_t) + 0x7, + sizeof(RX_STATUS_BLOCK_t), rx_ring->pRxStatusVa, rx_ring->pRxStatusPa); rx_ring->pRxStatusVa = NULL; @@ -675,18 +649,18 @@ void ConfigRxDmaRegs(struct et131x_adapter *etdev) * are ever returned, make sure the high part is retrieved here * before storing the adjusted address. */ - writel((uint32_t) (pRxLocal->RxStatusRealPA >> 32), + writel((uint32_t) ((u64)pRxLocal->pRxStatusPa >> 32), &rx_dma->dma_wb_base_hi); - writel((uint32_t) pRxLocal->RxStatusRealPA, &rx_dma->dma_wb_base_lo); + writel((uint32_t) pRxLocal->pRxStatusPa, &rx_dma->dma_wb_base_lo); memset(pRxLocal->pRxStatusVa, 0, sizeof(RX_STATUS_BLOCK_t)); /* Set the address and parameters of the packet status ring into the * 1310's registers */ - writel((uint32_t) (pRxLocal->pPSRingRealPa >> 32), + writel((uint32_t) ((u64)pRxLocal->pPSRingPa >> 32), &rx_dma->psr_base_hi); - writel((uint32_t) pRxLocal->pPSRingRealPa, &rx_dma->psr_base_lo); + writel((uint32_t) pRxLocal->pPSRingPa, &rx_dma->psr_base_lo); writel(pRxLocal->PsrNumEntries - 1, &rx_dma->psr_num_des.value); writel(0, &rx_dma->psr_full_offset.value); diff --git a/drivers/staging/et131x/et1310_rx.h b/drivers/staging/et131x/et1310_rx.h index b02fac8cd3cd..03e859b43111 100644 --- a/drivers/staging/et131x/et1310_rx.h +++ b/drivers/staging/et131x/et1310_rx.h @@ -309,15 +309,11 @@ typedef struct _rx_ring_t { void *pPSRingVa; dma_addr_t pPSRingPa; - uint64_t pPSRingRealPa; - uint64_t pPSRingOffset; RXDMA_PSR_FULL_OFFSET_t local_psr_full; u32 PsrNumEntries; void *pRxStatusVa; dma_addr_t pRxStatusPa; - uint64_t RxStatusRealPA; - uint64_t RxStatusOffset; struct list_head RecvBufferPool; diff --git a/drivers/staging/et131x/et1310_tx.c b/drivers/staging/et131x/et1310_tx.c index 8beb029fab1c..b2e4950b002a 100644 --- a/drivers/staging/et131x/et1310_tx.c +++ b/drivers/staging/et131x/et1310_tx.c @@ -146,15 +146,6 @@ int et131x_tx_dma_memory_alloc(struct et131x_adapter *adapter) * are ever returned, make sure the high part is retrieved here before * storing the adjusted address. */ - tx_ring->pTxDescRingAdjustedPa = tx_ring->tx_desc_ring_pa; - - /* Align Tx Descriptor Ring on a 4k (0x1000) byte boundary */ - et131x_align_allocated_memory(adapter, - &tx_ring->pTxDescRingAdjustedPa, - &tx_ring->TxDescOffset, 0x0FFF); - - tx_ring->tx_desc_ring += tx_ring->TxDescOffset; - /* Allocate memory for the Tx status block */ tx_ring->pTxStatusVa = pci_alloc_consistent(adapter->pdev, sizeof(TX_STATUS_BLOCK_t), @@ -190,16 +181,12 @@ void et131x_tx_dma_memory_free(struct et131x_adapter *adapter) if (adapter->tx_ring.tx_desc_ring) { /* Free memory relating to Tx rings here */ - adapter->tx_ring.tx_desc_ring -= adapter->tx_ring.TxDescOffset; - desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX) + 4096 - 1; - pci_free_consistent(adapter->pdev, desc_size, adapter->tx_ring.tx_desc_ring, adapter->tx_ring.tx_desc_ring_pa); - adapter->tx_ring.tx_desc_ring = NULL; } @@ -236,9 +223,9 @@ void ConfigTxDmaRegs(struct et131x_adapter *etdev) struct _TXDMA_t __iomem *txdma = &etdev->regs->txdma; /* Load the hardware with the start of the transmit descriptor ring. */ - writel((u32) (etdev->tx_ring.pTxDescRingAdjustedPa >> 32), + writel((u32) ((u64)etdev->tx_ring.tx_desc_ring_pa >> 32), &txdma->pr_base_hi); - writel((u32) etdev->tx_ring.pTxDescRingAdjustedPa, + writel((u32) etdev->tx_ring.tx_desc_ring_pa, &txdma->pr_base_lo); /* Initialise the transmit DMA engine */ diff --git a/drivers/staging/et131x/et1310_tx.h b/drivers/staging/et131x/et1310_tx.h index 56b7e2c058ec..9a31e97405e8 100644 --- a/drivers/staging/et131x/et1310_tx.h +++ b/drivers/staging/et131x/et1310_tx.h @@ -162,8 +162,6 @@ struct tx_ring { /* The actual descriptor ring */ struct tx_desc *tx_desc_ring; dma_addr_t tx_desc_ring_pa; - u64 pTxDescRingAdjustedPa; - u64 TxDescOffset; /* ReadyToSend indicates where we last wrote to in the descriptor ring. */ u32 txDmaReadyToSend;