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path: root/drivers/staging/comedi
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Diffstat (limited to 'drivers/staging/comedi')
-rw-r--r--drivers/staging/comedi/drivers/gsc_hpdi.c51
1 files changed, 25 insertions, 26 deletions
diff --git a/drivers/staging/comedi/drivers/gsc_hpdi.c b/drivers/staging/comedi/drivers/gsc_hpdi.c
index b5dd2921a164..da9a00258d77 100644
--- a/drivers/staging/comedi/drivers/gsc_hpdi.c
+++ b/drivers/staging/comedi/drivers/gsc_hpdi.c
@@ -184,8 +184,7 @@ static const struct hpdi_board hpdi_boards[] = {
};
struct hpdi_private {
- /* base addresses (ioremapped) */
- void __iomem *plx9080_iobase;
+ void __iomem *plx9080_mmio;
void __iomem *hpdi_iobase;
uint32_t *dio_buffer[NUM_DMA_BUFFERS]; /* dma buffers */
/* physical addresses of dma buffers */
@@ -219,9 +218,9 @@ static void gsc_hpdi_drain_dma(struct comedi_device *dev, unsigned int channel)
unsigned int next;
if (channel)
- next = readl(devpriv->plx9080_iobase + PLX_DMA1_PCI_ADDRESS_REG);
+ next = readl(devpriv->plx9080_mmio + PLX_DMA1_PCI_ADDRESS_REG);
else
- next = readl(devpriv->plx9080_iobase + PLX_DMA0_PCI_ADDRESS_REG);
+ next = readl(devpriv->plx9080_mmio + PLX_DMA0_PCI_ADDRESS_REG);
idx = devpriv->dma_desc_index;
start = le32_to_cpu(devpriv->dma_desc[idx].pci_start_addr);
@@ -261,7 +260,7 @@ static irqreturn_t gsc_hpdi_interrupt(int irq, void *d)
if (!dev->attached)
return IRQ_NONE;
- plx_status = readl(devpriv->plx9080_iobase + PLX_INTRCS_REG);
+ plx_status = readl(devpriv->plx9080_mmio + PLX_INTRCS_REG);
if ((plx_status & (ICS_DMA0_A | ICS_DMA1_A | ICS_LIA)) == 0)
return IRQ_NONE;
@@ -274,10 +273,10 @@ static irqreturn_t gsc_hpdi_interrupt(int irq, void *d)
}
/* spin lock makes sure no one else changes plx dma control reg */
spin_lock_irqsave(&dev->spinlock, flags);
- dma0_status = readb(devpriv->plx9080_iobase + PLX_DMA0_CS_REG);
+ dma0_status = readb(devpriv->plx9080_mmio + PLX_DMA0_CS_REG);
if (plx_status & ICS_DMA0_A) { /* dma chan 0 interrupt */
writeb((dma0_status & PLX_DMA_EN_BIT) | PLX_CLEAR_DMA_INTR_BIT,
- devpriv->plx9080_iobase + PLX_DMA0_CS_REG);
+ devpriv->plx9080_mmio + PLX_DMA0_CS_REG);
if (dma0_status & PLX_DMA_EN_BIT)
gsc_hpdi_drain_dma(dev, 0);
@@ -286,17 +285,17 @@ static irqreturn_t gsc_hpdi_interrupt(int irq, void *d)
/* spin lock makes sure no one else changes plx dma control reg */
spin_lock_irqsave(&dev->spinlock, flags);
- dma1_status = readb(devpriv->plx9080_iobase + PLX_DMA1_CS_REG);
+ dma1_status = readb(devpriv->plx9080_mmio + PLX_DMA1_CS_REG);
if (plx_status & ICS_DMA1_A) { /* XXX *//* dma chan 1 interrupt */
writeb((dma1_status & PLX_DMA_EN_BIT) | PLX_CLEAR_DMA_INTR_BIT,
- devpriv->plx9080_iobase + PLX_DMA1_CS_REG);
+ devpriv->plx9080_mmio + PLX_DMA1_CS_REG);
}
spin_unlock_irqrestore(&dev->spinlock, flags);
/* clear possible plx9080 interrupt sources */
if (plx_status & ICS_LDIA) { /* clear local doorbell interrupt */
- plx_bits = readl(devpriv->plx9080_iobase + PLX_DBR_OUT_REG);
- writel(plx_bits, devpriv->plx9080_iobase + PLX_DBR_OUT_REG);
+ plx_bits = readl(devpriv->plx9080_mmio + PLX_DBR_OUT_REG);
+ writel(plx_bits, devpriv->plx9080_mmio + PLX_DBR_OUT_REG);
}
if (hpdi_board_status & RX_OVERRUN_BIT) {
@@ -325,7 +324,7 @@ static void gsc_hpdi_abort_dma(struct comedi_device *dev, unsigned int channel)
/* spinlock for plx dma control/status reg */
spin_lock_irqsave(&dev->spinlock, flags);
- plx9080_abort_dma(devpriv->plx9080_iobase, channel);
+ plx9080_abort_dma(devpriv->plx9080_mmio, channel);
spin_unlock_irqrestore(&dev->spinlock, flags);
}
@@ -367,19 +366,19 @@ static int gsc_hpdi_cmd(struct comedi_device *dev,
* occasionally cause problems with transfer of first dma
* block. Initializing them to zero seems to fix the problem.
*/
- writel(0, devpriv->plx9080_iobase + PLX_DMA0_TRANSFER_SIZE_REG);
- writel(0, devpriv->plx9080_iobase + PLX_DMA0_PCI_ADDRESS_REG);
- writel(0, devpriv->plx9080_iobase + PLX_DMA0_LOCAL_ADDRESS_REG);
+ writel(0, devpriv->plx9080_mmio + PLX_DMA0_TRANSFER_SIZE_REG);
+ writel(0, devpriv->plx9080_mmio + PLX_DMA0_PCI_ADDRESS_REG);
+ writel(0, devpriv->plx9080_mmio + PLX_DMA0_LOCAL_ADDRESS_REG);
/* give location of first dma descriptor */
bits = devpriv->dma_desc_phys_addr | PLX_DESC_IN_PCI_BIT |
PLX_INTR_TERM_COUNT | PLX_XFER_LOCAL_TO_PCI;
- writel(bits, devpriv->plx9080_iobase + PLX_DMA0_DESCRIPTOR_REG);
+ writel(bits, devpriv->plx9080_mmio + PLX_DMA0_DESCRIPTOR_REG);
/* enable dma transfer */
spin_lock_irqsave(&dev->spinlock, flags);
writeb(PLX_DMA_EN_BIT | PLX_DMA_START_BIT | PLX_CLEAR_DMA_INTR_BIT,
- devpriv->plx9080_iobase + PLX_DMA0_CS_REG);
+ devpriv->plx9080_mmio + PLX_DMA0_CS_REG);
spin_unlock_irqrestore(&dev->spinlock, flags);
if (cmd->stop_src == TRIG_COUNT)
@@ -563,7 +562,7 @@ static int gsc_hpdi_init(struct comedi_device *dev)
plx_intcsr_bits =
ICS_AERR | ICS_PERR | ICS_PIE | ICS_PLIE | ICS_PAIE | ICS_LIE |
ICS_DMA0_E;
- writel(plx_intcsr_bits, devpriv->plx9080_iobase + PLX_INTRCS_REG);
+ writel(plx_intcsr_bits, devpriv->plx9080_mmio + PLX_INTRCS_REG);
return 0;
}
@@ -572,16 +571,16 @@ static void gsc_hpdi_init_plx9080(struct comedi_device *dev)
{
struct hpdi_private *devpriv = dev->private;
uint32_t bits;
- void __iomem *plx_iobase = devpriv->plx9080_iobase;
+ void __iomem *plx_iobase = devpriv->plx9080_mmio;
#ifdef __BIG_ENDIAN
bits = BIGEND_DMA0 | BIGEND_DMA1;
#else
bits = 0;
#endif
- writel(bits, devpriv->plx9080_iobase + PLX_BIGEND_REG);
+ writel(bits, devpriv->plx9080_mmio + PLX_BIGEND_REG);
- writel(0, devpriv->plx9080_iobase + PLX_INTRCS_REG);
+ writel(0, devpriv->plx9080_mmio + PLX_INTRCS_REG);
gsc_hpdi_abort_dma(dev, 0);
gsc_hpdi_abort_dma(dev, 1);
@@ -647,9 +646,9 @@ static int gsc_hpdi_auto_attach(struct comedi_device *dev,
return retval;
pci_set_master(pcidev);
- devpriv->plx9080_iobase = pci_ioremap_bar(pcidev, 0);
+ devpriv->plx9080_mmio = pci_ioremap_bar(pcidev, 0);
devpriv->hpdi_iobase = pci_ioremap_bar(pcidev, 2);
- if (!devpriv->plx9080_iobase || !devpriv->hpdi_iobase) {
+ if (!devpriv->plx9080_mmio || !devpriv->hpdi_iobase) {
dev_warn(dev->class_dev, "failed to remap io memory\n");
return -ENOMEM;
}
@@ -719,9 +718,9 @@ static void gsc_hpdi_detach(struct comedi_device *dev)
if (dev->irq)
free_irq(dev->irq, dev);
if (devpriv) {
- if (devpriv->plx9080_iobase) {
- writel(0, devpriv->plx9080_iobase + PLX_INTRCS_REG);
- iounmap(devpriv->plx9080_iobase);
+ if (devpriv->plx9080_mmio) {
+ writel(0, devpriv->plx9080_mmio + PLX_INTRCS_REG);
+ iounmap(devpriv->plx9080_mmio);
}
if (devpriv->hpdi_iobase)
iounmap(devpriv->hpdi_iobase);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 13:55:36 +0000