pasemi_mac: Move the IRQ mapping from the PCI layer to the driver

Fixes for ethernet IRQ mapping, to be done in the driver instead of in
the platform setup code.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 21 insertions, 9 deletions

diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index bde833542b6f..c7995d77ccfc 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -33,6 +33,8 @@
 #include <linux/tcp.h>
 #include <net/checksum.h>
 
+#include <asm/irq.h>
+
 #include "pasemi_mac.h"
 
 
@@ -531,6 +533,7 @@ static irqreturn_t pasemi_mac_tx_intr(int irq, void *data)
 static int pasemi_mac_open(struct net_device *dev)
 {
         struct pasemi_mac *mac = netdev_priv(dev);
+        int base_irq;
         unsigned int flags;
         int ret;
 
@@ -594,28 +597,37 @@ static int pasemi_mac_open(struct net_device *dev)
         netif_start_queue(dev);
         netif_poll_enable(dev);
 
-        ret = request_irq(mac->dma_pdev->irq + mac->dma_txch,
-                          &pasemi_mac_tx_intr, IRQF_DISABLED,
+        /* Interrupts are a bit different for our DMA controller: While
+         * it's got one a regular PCI device header, the interrupt there
+         * is really the base of the range it's using. Each tx and rx
+         * channel has it's own interrupt source.
+         */
+
+        base_irq = virq_to_hw(mac->dma_pdev->irq);
+
+        mac->tx_irq = irq_create_mapping(NULL, base_irq + mac->dma_txch);
+        mac->rx_irq = irq_create_mapping(NULL, base_irq + 20 + mac->dma_txch);
+
+        ret = request_irq(mac->tx_irq, &pasemi_mac_tx_intr, IRQF_DISABLED,
                           mac->tx->irq_name, dev);
         if (ret) {
                 dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n",
-                       mac->dma_pdev->irq + mac->dma_txch, ret);
+                        base_irq + mac->dma_txch, ret);
                 goto out_tx_int;
         }
 
-        ret = request_irq(mac->dma_pdev->irq + 20 + mac->dma_rxch,
-                          &pasemi_mac_rx_intr, IRQF_DISABLED,
+        ret = request_irq(mac->rx_irq, &pasemi_mac_rx_intr, IRQF_DISABLED,
                           mac->rx->irq_name, dev);
         if (ret) {
                 dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n",
-                       mac->dma_pdev->irq + 20 + mac->dma_rxch, ret);
+                        base_irq + 20 + mac->dma_rxch, ret);
                 goto out_rx_int;
         }
 
         return 0;
 
 out_rx_int:
-        free_irq(mac->dma_pdev->irq + mac->dma_txch, dev);
+        free_irq(mac->tx_irq, dev);
 out_tx_int:
         netif_poll_disable(dev);
         netif_stop_queue(dev);
@@ -699,8 +711,8 @@ static int pasemi_mac_close(struct net_device *dev)
         pci_write_config_dword(mac->dma_pdev,
                                PAS_DMA_RXINT_RCMDSTA(mac->dma_if), 0);
 
-        free_irq(mac->dma_pdev->irq + mac->dma_txch, dev);
-        free_irq(mac->dma_pdev->irq + 20 + mac->dma_rxch, dev);
+        free_irq(mac->tx_irq, dev);
+        free_irq(mac->rx_irq, dev);
 
         /* Free resources */
         pasemi_mac_free_rx_resources(dev);