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Diffstat (limited to 'drivers/net/8139too.c')
-rw-r--r--drivers/net/8139too.c138
1 files changed, 74 insertions, 64 deletions
diff --git a/drivers/net/8139too.c b/drivers/net/8139too.c
index 75317a14ad1c..8a5b0d293f75 100644
--- a/drivers/net/8139too.c
+++ b/drivers/net/8139too.c
@@ -98,7 +98,6 @@
#include <linux/compiler.h>
#include <linux/pci.h>
#include <linux/init.h>
-#include <linux/ioport.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
@@ -120,11 +119,6 @@
NETIF_MSG_LINK)
-/* enable PIO instead of MMIO, if CONFIG_8139TOO_PIO is selected */
-#ifdef CONFIG_8139TOO_PIO
-#define USE_IO_OPS 1
-#endif
-
/* define to 1, 2 or 3 to enable copious debugging info */
#define RTL8139_DEBUG 0
@@ -156,6 +150,13 @@
static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
+/* Whether to use MMIO or PIO. Default to MMIO. */
+#ifdef CONFIG_8139TOO_PIO
+static int use_io = 1;
+#else
+static int use_io = 0;
+#endif
+
/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
The RTL chips use a 64 element hash table based on the Ethernet CRC. */
static int multicast_filter_limit = 32;
@@ -614,6 +615,8 @@ MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
+module_param(use_io, int, 0);
+MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO");
module_param(multicast_filter_limit, int, 0);
module_param_array(media, int, NULL, 0);
module_param_array(full_duplex, int, NULL, 0);
@@ -709,13 +712,8 @@ static void __rtl8139_cleanup_dev (struct net_device *dev)
assert (tp->pci_dev != NULL);
pdev = tp->pci_dev;
-#ifdef USE_IO_OPS
- if (tp->mmio_addr)
- ioport_unmap (tp->mmio_addr);
-#else
if (tp->mmio_addr)
pci_iounmap (pdev, tp->mmio_addr);
-#endif /* USE_IO_OPS */
/* it's ok to call this even if we have no regions to free */
pci_release_regions (pdev);
@@ -790,32 +788,33 @@ static int __devinit rtl8139_init_board (struct pci_dev *pdev,
DPRINTK("PIO region size == 0x%02X\n", pio_len);
DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
-#ifdef USE_IO_OPS
- /* make sure PCI base addr 0 is PIO */
- if (!(pio_flags & IORESOURCE_IO)) {
- dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
- rc = -ENODEV;
- goto err_out;
- }
- /* check for weird/broken PCI region reporting */
- if (pio_len < RTL_MIN_IO_SIZE) {
- dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
- rc = -ENODEV;
- goto err_out;
- }
-#else
- /* make sure PCI base addr 1 is MMIO */
- if (!(mmio_flags & IORESOURCE_MEM)) {
- dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
- rc = -ENODEV;
- goto err_out;
- }
- if (mmio_len < RTL_MIN_IO_SIZE) {
- dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
- rc = -ENODEV;
- goto err_out;
+retry:
+ if (use_io) {
+ /* make sure PCI base addr 0 is PIO */
+ if (!(pio_flags & IORESOURCE_IO)) {
+ dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
+ rc = -ENODEV;
+ goto err_out;
+ }
+ /* check for weird/broken PCI region reporting */
+ if (pio_len < RTL_MIN_IO_SIZE) {
+ dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n");
+ rc = -ENODEV;
+ goto err_out;
+ }
+ } else {
+ /* make sure PCI base addr 1 is MMIO */
+ if (!(mmio_flags & IORESOURCE_MEM)) {
+ dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
+ rc = -ENODEV;
+ goto err_out;
+ }
+ if (mmio_len < RTL_MIN_IO_SIZE) {
+ dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n");
+ rc = -ENODEV;
+ goto err_out;
+ }
}
-#endif
rc = pci_request_regions (pdev, DRV_NAME);
if (rc)
@@ -825,28 +824,28 @@ static int __devinit rtl8139_init_board (struct pci_dev *pdev,
/* enable PCI bus-mastering */
pci_set_master (pdev);
-#ifdef USE_IO_OPS
- ioaddr = ioport_map(pio_start, pio_len);
- if (!ioaddr) {
- dev_err(&pdev->dev, "cannot map PIO, aborting\n");
- rc = -EIO;
- goto err_out;
- }
- dev->base_addr = pio_start;
- tp->mmio_addr = ioaddr;
- tp->regs_len = pio_len;
-#else
- /* ioremap MMIO region */
- ioaddr = pci_iomap(pdev, 1, 0);
- if (ioaddr == NULL) {
- dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
- rc = -EIO;
- goto err_out;
+ if (use_io) {
+ ioaddr = pci_iomap(pdev, 0, 0);
+ if (!ioaddr) {
+ dev_err(&pdev->dev, "cannot map PIO, aborting\n");
+ rc = -EIO;
+ goto err_out;
+ }
+ dev->base_addr = pio_start;
+ tp->regs_len = pio_len;
+ } else {
+ /* ioremap MMIO region */
+ ioaddr = pci_iomap(pdev, 1, 0);
+ if (ioaddr == NULL) {
+ dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n");
+ pci_release_regions(pdev);
+ use_io = 1;
+ goto retry;
+ }
+ dev->base_addr = (long) ioaddr;
+ tp->regs_len = mmio_len;
}
- dev->base_addr = (long) ioaddr;
tp->mmio_addr = ioaddr;
- tp->regs_len = mmio_len;
-#endif /* USE_IO_OPS */
/* Bring old chips out of low-power mode. */
RTL_W8 (HltClk, 'R');
@@ -952,6 +951,14 @@ static int __devinit rtl8139_init_one (struct pci_dev *pdev,
"Use the \"8139cp\" driver for improved performance and stability.\n");
}
+ if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
+ pdev->device == PCI_DEVICE_ID_REALTEK_8139 &&
+ pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS &&
+ pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) {
+ printk(KERN_INFO "8139too: OQO Model 2 detected. Forcing PIO\n");
+ use_io = 1;
+ }
+
i = rtl8139_init_board (pdev, &dev);
if (i < 0)
return i;
@@ -2381,20 +2388,24 @@ static void rtl8139_set_msglevel(struct net_device *dev, u32 datum)
np->msg_enable = datum;
}
-/* TODO: we are too slack to do reg dumping for pio, for now */
-#ifdef CONFIG_8139TOO_PIO
-#define rtl8139_get_regs_len NULL
-#define rtl8139_get_regs NULL
-#else
static int rtl8139_get_regs_len(struct net_device *dev)
{
- struct rtl8139_private *np = netdev_priv(dev);
+ struct rtl8139_private *np;
+ /* TODO: we are too slack to do reg dumping for pio, for now */
+ if (use_io)
+ return 0;
+ np = netdev_priv(dev);
return np->regs_len;
}
static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
{
- struct rtl8139_private *np = netdev_priv(dev);
+ struct rtl8139_private *np;
+
+ /* TODO: we are too slack to do reg dumping for pio, for now */
+ if (use_io)
+ return;
+ np = netdev_priv(dev);
regs->version = RTL_REGS_VER;
@@ -2402,7 +2413,6 @@ static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs,
memcpy_fromio(regbuf, np->mmio_addr, regs->len);
spin_unlock_irq(&np->lock);
}
-#endif /* CONFIG_8139TOO_MMIO */
static int rtl8139_get_sset_count(struct net_device *dev, int sset)
{
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.