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authorMichael Buesch <mb@bu3sch.de>2008-02-29 13:36:12 +0300
committerJohn W. Linville <linville@tuxdriver.com>2008-03-07 01:09:43 +0300
commitaab547ce0d1493d400b6468c521a0137cd8c1edf (patch)
tree84625da40d905669a28a5770de111225667d5f27 /drivers/ssb/driver_pcicore.c
parent69d3b6f491545d326135a1def4e290cd577c9a36 (diff)
downloadlinux-aab547ce0d1493d400b6468c521a0137cd8c1edf.tar.xz
ssb: Add Gigabit Ethernet driver
This adds the Gigabit Ethernet driver for the SSB Gigabit Ethernet core. This driver actually is a frontend to the Tigon3 driver. So the real work is done by tg3. This device is used in the Linksys WRT350N. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/ssb/driver_pcicore.c')
-rw-r--r--drivers/ssb/driver_pcicore.c160
1 files changed, 89 insertions, 71 deletions
diff --git a/drivers/ssb/driver_pcicore.c b/drivers/ssb/driver_pcicore.c
index 74b9a8aea52b..33a7d5620474 100644
--- a/drivers/ssb/driver_pcicore.c
+++ b/drivers/ssb/driver_pcicore.c
@@ -60,77 +60,6 @@ static DEFINE_SPINLOCK(cfgspace_lock);
/* Core to access the external PCI config space. Can only have one. */
static struct ssb_pcicore *extpci_core;
-static u32 ssb_pcicore_pcibus_iobase = 0x100;
-static u32 ssb_pcicore_pcibus_membase = SSB_PCI_DMA;
-
-int pcibios_plat_dev_init(struct pci_dev *d)
-{
- struct resource *res;
- int pos, size;
- u32 *base;
-
- ssb_printk(KERN_INFO "PCI: Fixing up device %s\n",
- pci_name(d));
-
- /* Fix up resource bases */
- for (pos = 0; pos < 6; pos++) {
- res = &d->resource[pos];
- if (res->flags & IORESOURCE_IO)
- base = &ssb_pcicore_pcibus_iobase;
- else
- base = &ssb_pcicore_pcibus_membase;
- res->flags |= IORESOURCE_PCI_FIXED;
- if (res->end) {
- size = res->end - res->start + 1;
- if (*base & (size - 1))
- *base = (*base + size) & ~(size - 1);
- res->start = *base;
- res->end = res->start + size - 1;
- *base += size;
- pci_write_config_dword(d, PCI_BASE_ADDRESS_0 + (pos << 2), res->start);
- }
- /* Fix up PCI bridge BAR0 only */
- if (d->bus->number == 0 && PCI_SLOT(d->devfn) == 0)
- break;
- }
- /* Fix up interrupt lines */
- d->irq = ssb_mips_irq(extpci_core->dev) + 2;
- pci_write_config_byte(d, PCI_INTERRUPT_LINE, d->irq);
-
- return 0;
-}
-
-static void __init ssb_fixup_pcibridge(struct pci_dev *dev)
-{
- u8 lat;
-
- if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) != 0)
- return;
-
- ssb_printk(KERN_INFO "PCI: Fixing up bridge %s\n", pci_name(dev));
-
- /* Enable PCI bridge bus mastering and memory space */
- pci_set_master(dev);
- if (pcibios_enable_device(dev, ~0) < 0) {
- ssb_printk(KERN_ERR "PCI: SSB bridge enable failed\n");
- return;
- }
-
- /* Enable PCI bridge BAR1 prefetch and burst */
- pci_write_config_dword(dev, SSB_BAR1_CONTROL, 3);
-
- /* Make sure our latency is high enough to handle the devices behind us */
- lat = 168;
- ssb_printk(KERN_INFO "PCI: Fixing latency timer of device %s to %u\n",
- pci_name(dev), lat);
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
-}
-DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ssb_fixup_pcibridge);
-
-int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
- return ssb_mips_irq(extpci_core->dev) + 2;
-}
static u32 get_cfgspace_addr(struct ssb_pcicore *pc,
unsigned int bus, unsigned int dev,
@@ -320,6 +249,95 @@ static struct pci_controller ssb_pcicore_controller = {
.mem_offset = 0x24000000,
};
+static u32 ssb_pcicore_pcibus_iobase = 0x100;
+static u32 ssb_pcicore_pcibus_membase = SSB_PCI_DMA;
+
+/* This function is called when doing a pci_enable_device().
+ * We must first check if the device is a device on the PCI-core bridge. */
+int ssb_pcicore_plat_dev_init(struct pci_dev *d)
+{
+ struct resource *res;
+ int pos, size;
+ u32 *base;
+
+ if (d->bus->ops != &ssb_pcicore_pciops) {
+ /* This is not a device on the PCI-core bridge. */
+ return -ENODEV;
+ }
+
+ ssb_printk(KERN_INFO "PCI: Fixing up device %s\n",
+ pci_name(d));
+
+ /* Fix up resource bases */
+ for (pos = 0; pos < 6; pos++) {
+ res = &d->resource[pos];
+ if (res->flags & IORESOURCE_IO)
+ base = &ssb_pcicore_pcibus_iobase;
+ else
+ base = &ssb_pcicore_pcibus_membase;
+ res->flags |= IORESOURCE_PCI_FIXED;
+ if (res->end) {
+ size = res->end - res->start + 1;
+ if (*base & (size - 1))
+ *base = (*base + size) & ~(size - 1);
+ res->start = *base;
+ res->end = res->start + size - 1;
+ *base += size;
+ pci_write_config_dword(d, PCI_BASE_ADDRESS_0 + (pos << 2), res->start);
+ }
+ /* Fix up PCI bridge BAR0 only */
+ if (d->bus->number == 0 && PCI_SLOT(d->devfn) == 0)
+ break;
+ }
+ /* Fix up interrupt lines */
+ d->irq = ssb_mips_irq(extpci_core->dev) + 2;
+ pci_write_config_byte(d, PCI_INTERRUPT_LINE, d->irq);
+
+ return 0;
+}
+
+/* Early PCI fixup for a device on the PCI-core bridge. */
+static void ssb_pcicore_fixup_pcibridge(struct pci_dev *dev)
+{
+ u8 lat;
+
+ if (dev->bus->ops != &ssb_pcicore_pciops) {
+ /* This is not a device on the PCI-core bridge. */
+ return;
+ }
+ if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) != 0)
+ return;
+
+ ssb_printk(KERN_INFO "PCI: Fixing up bridge %s\n", pci_name(dev));
+
+ /* Enable PCI bridge bus mastering and memory space */
+ pci_set_master(dev);
+ if (pcibios_enable_device(dev, ~0) < 0) {
+ ssb_printk(KERN_ERR "PCI: SSB bridge enable failed\n");
+ return;
+ }
+
+ /* Enable PCI bridge BAR1 prefetch and burst */
+ pci_write_config_dword(dev, SSB_BAR1_CONTROL, 3);
+
+ /* Make sure our latency is high enough to handle the devices behind us */
+ lat = 168;
+ ssb_printk(KERN_INFO "PCI: Fixing latency timer of device %s to %u\n",
+ pci_name(dev), lat);
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ssb_pcicore_fixup_pcibridge);
+
+/* PCI device IRQ mapping. */
+int ssb_pcicore_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ if (dev->bus->ops != &ssb_pcicore_pciops) {
+ /* This is not a device on the PCI-core bridge. */
+ return -ENODEV;
+ }
+ return ssb_mips_irq(extpci_core->dev) + 2;
+}
+
static void ssb_pcicore_init_hostmode(struct ssb_pcicore *pc)
{
u32 val;