*
*/
#include <linux/types.h>
-#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
+#include <linux/spinlock.h>
+
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/pci_regs.h>
+
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/bootinfo.h>
+
+#include <adm5120_defs.h>
+#include <adm5120_info.h>
+#include <adm5120_defs.h>
+#include <adm5120_irq.h>
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(f, a...) printk(KERN_DEBUG f, ## a )
+#else
+#define DBG(f, a...) do {} while (0)
+#endif
+
+#define PCI_ENABLE 0x80000000
+
+static spinlock_t pci_lock = SPIN_LOCK_UNLOCKED;
+
+/* -------------------------------------------------------------------------*/
+
+static inline void write_cfgaddr(u32 addr)
+{
+ __raw_writel((addr | PCI_ENABLE),
+ (void __iomem *)(KSEG1ADDR(ADM5120_PCICFG_ADDR)));
+}
+
+static inline void write_cfgdata(u32 data)
+{
+ __raw_writel(data, (void __iomem *)KSEG1ADDR(ADM5120_PCICFG_DATA));
+}
+
+static inline u32 read_cfgdata(void)
+{
+ return __raw_readl((void __iomem *)KSEG1ADDR(ADM5120_PCICFG_DATA));
+}
+
+static inline u32 mkaddr(struct pci_bus *bus, unsigned int devfn, int where)
+{
+ return (((bus->number & 0xFF) << 16) | ((devfn & 0xFF) << 8) | \
+ (where & 0xFC));
+}
+
+/* -------------------------------------------------------------------------*/
+
+static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 *val)
+{
+ unsigned long flags;
+ u32 data;
+
+ spin_lock_irqsave(&pci_lock, flags);
+
+ write_cfgaddr(mkaddr(bus,devfn,where));
+ data = read_cfgdata();
+
+ DBG("PCI: cfg_read %02u.%02u.%01u/%02X:%01d, cfg:0x%08X",
+ bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn),
+ where, size, data);
+
+ switch (size) {
+ case 1:
+ if (where & 1)
+ data >>= 8;
+ if (where & 2)
+ data >>= 16;
+ data &= 0xFF;
+ break;
+ case 2:
+ if (where & 2)
+ data >>= 16;
+ data &= 0xFFFF;
+ break;
+ }
+
+ *val = data;
+ DBG(", 0x%08X returned\n", data);
+
+ spin_unlock_irqrestore(&pci_lock, flags);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 val)
+{
+ unsigned long flags;
+ u32 data;
+ int s;
+
+ spin_lock_irqsave(&pci_lock, flags);
+
+ write_cfgaddr(mkaddr(bus,devfn,where));
+ data = read_cfgdata();
+
+ DBG("PCI: cfg_write %02u.%02u.%01u/%02X:%01d, cfg:0x%08X",
+ bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn),
+ where, size, data);
+
+ switch (size) {
+ case 1:
+ s = ((where & 3) << 3);
+ data &= ~(0xFF << s);
+ data |= ((val & 0xFF) << s);
+ break;
+ case 2:
+ s = ((where & 2) << 4);
+ data &= ~(0xFFFF << s);
+ data |= ((val & 0xFFFF) << s);
+ break;
+ case 4:
+ data = val;
+ break;
+ }
+
+ write_cfgdata(data);
+ DBG(", 0x%08X written\n", data);
-#include <asm/mach-adm5120/adm5120_info.h>
-#include <asm/mach-adm5120/adm5120_defs.h>
-#include <asm/mach-adm5120/adm5120_irq.h>
+ spin_unlock_irqrestore(&pci_lock, flags);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops adm5120_pci_ops = {
+ .read = pci_config_read,
+ .write = pci_config_write,
+};
+
+/* -------------------------------------------------------------------------*/
+
+static void adm5120_pci_fixup(struct pci_dev *dev)
+{
+ if (dev->devfn != 0)
+ return;
+
+ /* setup COMMAND register */
+ pci_write_config_word(dev, PCI_COMMAND,
+ (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
+
+ /* setup CACHE_LINE_SIZE register */
+ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
+
+ /* setup BARS */
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0);
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADMTEK, PCI_DEVICE_ID_ADMTEK_ADM5120,
+ adm5120_pci_fixup);
+
+/* -------------------------------------------------------------------------*/
+
+struct adm5120_pci_irq {
+ u8 slot;
+ u8 func;
+ u8 pin;
+ unsigned irq;
+};
+
+#define PCIIRQ(s,f,p,i) { \
+ .slot = (s), \
+ .func = (f), \
+ .pin = (p), \
+ .irq = (i) \
+ }
+
+static struct adm5120_pci_irq default_pci_irqs[] __initdata = {
+ PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
+};
+
+static struct adm5120_pci_irq rb1xx_pci_irqs[] __initdata = {
+ PCIIRQ(1, 0, 1, ADM5120_IRQ_PCI0),
+ PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI1),
+ PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI2)
+};
+
+static struct adm5120_pci_irq cas771_pci_irqs[] __initdata = {
+ PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
+ PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI1),
+ PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
+};
+
+static struct adm5120_pci_irq np28g_pci_irqs[] __initdata = {
+ PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
+ PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI0),
+ PCIIRQ(3, 1, 2, ADM5120_IRQ_PCI1),
+ PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
+};
+
+#define GETMAP(n) do { \
+ nr_irqs = ARRAY_SIZE(n ## _pci_irqs); \
+ p = n ## _pci_irqs; \
+ } while (0)
+
+int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ struct adm5120_pci_irq *p;
+ int nr_irqs;
+ int i;
+ int irq;
+
+ irq = -1;
+ if (slot < 1 || slot > 3) {
+ printk(KERN_ALERT "PCI: slot number %u is not supported\n",
+ slot);
+ goto out;
+ }
+
+ GETMAP(default);
+
+ switch (mips_machtype) {
+ case MACH_ADM5120_RB_111:
+ case MACH_ADM5120_RB_112:
+ case MACH_ADM5120_RB_133:
+ case MACH_ADM5120_RB_133C:
+ case MACH_ADM5120_RB_153:
+ GETMAP(rb1xx);
+ break;
+ case MACH_ADM5120_NP28G:
+ GETMAP(np28g);
+ break;
+ case MACH_ADM5120_P335:
+ case MACH_ADM5120_P334WT:
+ /* using default mapping */
+ break;
+ case MACH_ADM5120_CAS771:
+ GETMAP(cas771);
+ break;
+
+ case MACH_ADM5120_NP27G:
+ case MACH_ADM5120_NP28GHS:
+ case MACH_ADM5120_WP54AG:
+ case MACH_ADM5120_WP54G:
+ case MACH_ADM5120_WP54G_WRT:
+ case MACH_ADM5120_WPP54AG:
+ case MACH_ADM5120_WPP54G:
+ default:
+ printk(KERN_ALERT "PCI: irq map is unknown, using defaults.\n");
+ break;
+ }
+
+ for (i = 0; i < nr_irqs; i++, p++) {
+ if ((p->slot == slot) && (PCI_FUNC(dev->devfn) == p->func) &&
+ (p->pin == pin)) {
+ irq = p->irq;
+ break;
+ }
+ }
+
+ if (irq < 0) {
+ printk(KERN_ALERT "PCI: no irq found for %s pin:%u\n",
+ pci_name(dev), pin);
+ } else {
+ printk(KERN_INFO "PCI: mapping irq for %s pin:%u, irq:%d\n",
+ pci_name(dev), pin, irq);
+ }
+
+out:
+ return irq;
+}
+
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return 0;
+}
-extern struct pci_ops adm5120_pci_ops;
+/* -------------------------------------------------------------------------*/
static struct resource pci_io_resource = {
- .name = "ADM5120 PCI I/O",
- .start = ADM5120_PCIIO_BASE,
- .end = ADM5120_PCICFG_ADDR-1,
- .flags = IORESOURCE_IO
+ .name = "ADM5120 PCI I/O",
+ .start = ADM5120_PCIIO_BASE,
+ .end = ADM5120_PCICFG_ADDR-1,
+ .flags = IORESOURCE_IO
};
static struct resource pci_mem_resource = {
- .name = "ADM5120 PCI MEM",
- .start = ADM5120_PCIMEM_BASE,
- .end = ADM5120_PCIIO_BASE-1,
- .flags = IORESOURCE_MEM
+ .name = "ADM5120 PCI MEM",
+ .start = ADM5120_PCIMEM_BASE,
+ .end = ADM5120_PCIIO_BASE-1,
+ .flags = IORESOURCE_MEM
};
static struct pci_controller adm5120_controller = {
pci_bios = adm5120_has_pci();
- printk("adm5120: system has %sPCI BIOS\n", pci_bios ? "" : "no ");
+ printk(KERN_INFO "adm5120: system has %sPCI BIOS\n",
+ pci_bios ? "" : "no ");
if (pci_bios == 0)
return -1;
projects / openwrt.git / blobdiff