--- /dev/null
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+#include <asm/pci.h>
+#include <asm/io.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <asm/mach-rt288x/rt288x.h>
+#include <asm/mach-rt288x/rt288x_pci.h>
+
+#ifdef CONFIG_PCI
+
+#define PCI_ACCESS_READ 0
+#define PCI_ACCESS_WRITE 1
+
+static int config_access(unsigned char access_type, struct pci_bus *bus,
+ unsigned int devfn, unsigned char where, u32 * data)
+{
+ unsigned int slot = PCI_SLOT(devfn);
+ unsigned int address;
+ u8 func = PCI_FUNC(devfn);
+ address = (bus->number << 16) | (slot << 11) | (func << 8) | (where& 0xfc) | 0x80000000;
+ writel(address, RT2880_PCI_CONFIG_ADDR);
+ if (access_type == PCI_ACCESS_WRITE)
+ writel(*data, RT2880_PCI_CONFIG_DATA);
+ else
+ *data = readl(RT2880_PCI_CONFIG_DATA);
+ return 0;
+}
+
+int
+pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * val)
+{
+ u32 data = 0;
+ if(config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ if(size == 1)
+ *val = (data >> ((where & 3) << 3)) & 0xff;
+ else if(size == 2)
+ *val = (data >> ((where & 3) << 3)) & 0xffff;
+ else
+ *val = data;
+ return PCIBIOS_SUCCESSFUL;
+}
+
+int
+pci_config_write(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 val)
+{
+ u32 data = 0;
+ if(size == 4)
+ {
+ data = val;
+ } else {
+ if(config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ if(size == 1)
+ data = (data & ~(0xff << ((where & 3) << 3))) |
+ (val << ((where & 3) << 3));
+ else if(size == 2)
+ data = (data & ~(0xffff << ((where & 3) << 3))) |
+ (val << ((where & 3) << 3));
+ }
+ if(config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ return PCIBIOS_SUCCESSFUL;
+}
+#endif
--- /dev/null
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/version.h>
+#include <asm/pci.h>
+#include <asm/io.h>
+#include <asm/mach-rt288x/rt288x.h>
+#include <asm/mach-rt288x/rt288x_pci.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+
+#ifdef CONFIG_PCI
+
+extern int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
+extern int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
+
+struct pci_ops rt2880_pci_ops = {
+ .read = pci_config_read,
+ .write = pci_config_write,
+};
+
+static struct resource pci_io_resource = {
+ .name = "pci MEM space",
+ .start = 0x20000000,
+ .end = 0x2FFFFFFF,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct resource pci_mem_resource = {
+ .name = "pci IO space",
+ .start = 0x00460000,
+ .end = 0x0046FFFF,
+ .flags = IORESOURCE_IO,
+};
+
+struct pci_controller rt2880_controller = {
+ .pci_ops = &rt2880_pci_ops,
+ .mem_resource = &pci_io_resource,
+ .io_resource = &pci_mem_resource,
+ .mem_offset = 0x00000000UL,
+ .io_offset = 0x00000000UL,
+};
+
+void inline
+read_config(unsigned long bus, unsigned long dev, unsigned long func,
+ unsigned long reg, unsigned long *val)
+{
+ unsigned long address =
+ (bus << 16) | (dev << 11) | (func << 8) | (reg & 0xfc) | 0x80000000;
+ writel(address, RT2880_PCI_CONFIG_ADDR);
+ *val = readl(RT2880_PCI_CONFIG_DATA);
+}
+
+void inline
+write_config(unsigned long bus, unsigned long dev, unsigned long func,
+ unsigned long reg, unsigned long val)
+{
+ unsigned long address =
+ (bus << 16) | (dev << 11) | (func << 8) | (reg & 0xfc) | 0x80000000;
+ writel(address, RT2880_PCI_CONFIG_ADDR);
+ writel(val, RT2880_PCI_CONFIG_DATA);
+}
+
+int __init
+pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ u16 cmd;
+ unsigned long val;
+ int irq = -1;
+ if (dev->bus->number != 0)
+ return 0;
+
+ switch(PCI_SLOT(dev->devfn))
+ {
+ case 0x00:
+ write_config(0, 0, 0, PCI_BASE_ADDRESS_0, 0x08000000);
+ read_config(0, 0, 0, PCI_BASE_ADDRESS_0, &val);
+ break;
+ case 0x11:
+ irq = RT288X_CPU_IRQ_PCI;
+ break;
+ default:
+ printk("%s:%s[%d] trying to alloc unknown pci irq\n", __FILE__, __func__, __LINE__);
+ BUG();
+ break;
+ }
+
+ pci_write_config_byte((struct pci_dev*)dev, PCI_CACHE_LINE_SIZE, 0x14);
+ pci_write_config_byte((struct pci_dev*)dev, PCI_LATENCY_TIMER, 0xFF);
+ pci_read_config_word((struct pci_dev*)dev, PCI_COMMAND, &cmd);
+ cmd = cmd | PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
+ PCI_COMMAND_INVALIDATE | PCI_COMMAND_FAST_BACK | PCI_COMMAND_SERR |
+ PCI_COMMAND_WAIT | PCI_COMMAND_PARITY;
+ pci_write_config_word((struct pci_dev*)dev, PCI_COMMAND, cmd);
+ pci_write_config_byte((struct pci_dev*)dev, PCI_INTERRUPT_LINE, dev->irq);
+ return irq;
+}
+
+int
+init_rt2880pci(void)
+{
+ unsigned long val = 0;
+ int i;
+ writel(0, RT2880_PCI_PCICFG_ADDR);
+ for(i = 0; i < 0xfffff; i++) {}
+ writel(0x79, RT2880_PCI_ARBCTL);
+ writel(0x07FF0001, RT2880_PCI_BAR0SETUP_ADDR);
+ writel(RT2880_PCI_SLOT1_BASE, RT2880_PCI_MEMBASE);
+ writel(0x00460000, RT2880_PCI_IOBASE);
+ writel(0x08000000, RT2880_PCI_IMBASEBAR0_ADDR);
+ writel(0x08021814, RT2880_PCI_ID);
+ writel(0x00800001, RT2880_PCI_CLASS);
+ writel(0x28801814, RT2880_PCI_SUBID);
+ writel(0x000c0000, RT2880_PCI_PCIMSK_ADDR);
+ write_config(0, 0, 0, PCI_BASE_ADDRESS_0, 0x08000000);
+ read_config(0, 0, 0, PCI_BASE_ADDRESS_0, &val);
+ register_pci_controller(&rt2880_controller);
+ return 0;
+}
+
+int
+pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return 0;
+}
+
+struct pci_fixup pcibios_fixups[] = {
+ {0}
+};
+
+arch_initcall(init_rt2880pci);
+
+#endif
projects / openwrt.git / commitdiff