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staging: et131x: Replace rxdma csr register magic numbers with defines 

Several magic numbers were used to represent rxdma csr register bitmasks.
Replace them with descriptive defines.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mark Einon 2013-01-04 22:25:45 +00:00 committed by Greg Kroah-Hartman
parent 0902468846
commit 3040d05685
2 changed files with 25 additions and 17 deletions
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34
drivers/staging/et131x/et131x.c
View File

@ -577,7 +577,6 @@ static int eeprom_wait_ready(struct pci_dev *pdev, u32 *status)
return -ETIMEDOUT;
}
/**
* eeprom_write - Write a byte to the ET1310's EEPROM
* @adapter: pointer to our private adapter structure
@ -843,29 +842,29 @@ static int et131x_init_eeprom(struct et131x_adapter *adapter)
static void et131x_rx_dma_enable(struct et131x_adapter *adapter)
{
/* Setup the receive dma configuration register for normal operation */
u32 csr = 0x2000; /* FBR1 enable */
u32 csr = ET_RXDMA_CSR_FBR1_ENABLE;
if (adapter->rx_ring.fbr[1]->buffsize == 4096)
csr |= 0x0800;
csr |= ET_RXDMA_CSR_FBR1_SIZE_LO;
else if (adapter->rx_ring.fbr[1]->buffsize == 8192)
csr |= 0x1000;
csr |= ET_RXDMA_CSR_FBR1_SIZE_HI;
else if (adapter->rx_ring.fbr[1]->buffsize == 16384)
csr |= 0x1800;
csr |= ET_RXDMA_CSR_FBR1_SIZE_LO | ET_RXDMA_CSR_FBR1_SIZE_HI;
csr |= 0x0400; /* FBR0 enable */
csr |= ET_RXDMA_CSR_FBR0_ENABLE;
if (adapter->rx_ring.fbr[0]->buffsize == 256)
csr |= 0x0100;
csr |= ET_RXDMA_CSR_FBR0_SIZE_LO;
else if (adapter->rx_ring.fbr[0]->buffsize == 512)
csr |= 0x0200;
csr |= ET_RXDMA_CSR_FBR0_SIZE_HI;
else if (adapter->rx_ring.fbr[0]->buffsize == 1024)
csr |= 0x0300;
csr |= ET_RXDMA_CSR_FBR0_SIZE_LO | ET_RXDMA_CSR_FBR0_SIZE_HI;
writel(csr, &adapter->regs->rxdma.csr);
csr = readl(&adapter->regs->rxdma.csr);
if (csr & 0x00020000) {
if (csr & ET_RXDMA_CSR_HALT_STATUS) {
udelay(5);
csr = readl(&adapter->regs->rxdma.csr);
if (csr & 0x00020000) {
if (csr & ET_RXDMA_CSR_HALT_STATUS) {
dev_err(&adapter->pdev->dev,
"RX Dma failed to exit halt state. CSR 0x%08x\n",
csr);
@ -881,15 +880,16 @@ static void et131x_rx_dma_disable(struct et131x_adapter *adapter)
{
u32 csr;
/* Setup the receive dma configuration register */
writel(0x00002001, &adapter->regs->rxdma.csr);
writel(ET_RXDMA_CSR_HALT | ET_RXDMA_CSR_FBR1_ENABLE,
&adapter->regs->rxdma.csr);
csr = readl(&adapter->regs->rxdma.csr);
if ((csr & 0x00020000) == 0) { /* Check halt status (bit 17) */
if (!(csr & ET_RXDMA_CSR_HALT_STATUS)) {
udelay(5);
csr = readl(&adapter->regs->rxdma.csr);
if ((csr & 0x00020000) == 0)
if (!(csr & ET_RXDMA_CSR_HALT_STATUS))
dev_err(&adapter->pdev->dev,
"RX Dma failed to enter halt state. CSR 0x%08x\n",
csr);
"RX Dma failed to enter halt state. CSR 0x%08x\n",
csr);
}
}
@ -2032,7 +2032,7 @@ static void et131x_disable_interrupts(struct et131x_adapter *adapter)
static void et131x_tx_dma_disable(struct et131x_adapter *adapter)
{
/* Setup the tramsmit dma configuration register */
writel(ET_TXDMA_CSR_HALT|ET_TXDMA_SNGL_EPKT,
writel(ET_TXDMA_CSR_HALT | ET_TXDMA_SNGL_EPKT,
&adapter->regs->txdma.csr);
}

8
drivers/staging/et131x/et131x.h
View File

@ -317,6 +317,14 @@ struct txdma_regs { /* Location: */
* 18-31: unused
*/
#define ET_RXDMA_CSR_HALT 0x0001
#define ET_RXDMA_CSR_FBR0_SIZE_LO 0x0100
#define ET_RXDMA_CSR_FBR0_SIZE_HI 0x0200
#define ET_RXDMA_CSR_FBR0_ENABLE 0x0400
#define ET_RXDMA_CSR_FBR1_SIZE_LO 0x0800
#define ET_RXDMA_CSR_FBR1_SIZE_HI 0x1000
#define ET_RXDMA_CSR_FBR1_ENABLE 0x2000
#define ET_RXDMA_CSR_HALT_STATUS 0x00020000
/*
* structure for dma writeback lo reg in rxdma address map