#include <console/console.h>
#include <arch/smp/mpspec.h>
#include <device/pci.h>
#include <string.h>
#include <stdint.h>
#include <cpu/x86/lapic.h>
#include <arch/cpu.h>                                                                      
#include <arch/io.h>

#define HT_INIT_CONTROL 0x6c
#define HTIC_BIOSR_Detect  (1<<5)

/* If we assume a symmetric processor configuration we can
 * get all of the information we need to write the processor
 * entry from the bootstrap processor.
 * Plus I don't think linux really even cares.
 * Having the proper apicid's in the table so the non-bootstrap
 *  processors can be woken up should be enough.  Linux-2.6.11 work-around.
 */
void smp_write_processors_inorder(struct mp_config_table *mc)
{
        int boot_apic_id;
	int order_id;
        unsigned apic_version;
        unsigned cpu_features;
        unsigned cpu_feature_flags;
        struct cpuid_result result;
        device_t cpu;
                                                                                
        boot_apic_id = lapicid();
        apic_version = lapic_read(LAPIC_LVR) & 0xff;
        result = cpuid(1);
        cpu_features = result.eax;
        cpu_feature_flags = result.edx;
	/* order the output of the cpus to fix a bug in kernel 6 11 */
	for(order_id = 0;order_id <256; order_id++) {
            for(cpu = all_devices; cpu; cpu = cpu->next) {
                unsigned long cpu_flag;
                if ((cpu->path.type != DEVICE_PATH_APIC) ||
                        (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER))
                {
                        continue;
                }
                if (!cpu->enabled) {
                        continue;
                }
                cpu_flag = MPC_CPU_ENABLED;
                if (boot_apic_id == cpu->path.apic.apic_id) {
                        cpu_flag = MPC_CPU_ENABLED | MPC_CPU_BOOTPROCESSOR;
                }
		if(cpu->path.apic.apic_id == order_id) {
                    smp_write_processor(mc,
                        cpu->path.apic.apic_id, apic_version,
                        cpu_flag, cpu_features, cpu_feature_flags);
		    break;
		}
            }
	}
}
                                                                                
static unsigned node_link_to_bus(unsigned node, unsigned link)
{
	device_t dev;
	unsigned reg;

	dev = dev_find_slot(0, PCI_DEVFN(0x18, 1));
	if (!dev) {
		return 0;
	}
	for(reg = 0xE0; reg < 0xF0; reg += 0x04) {
		uint32_t config_map;
		unsigned dst_node;
		unsigned dst_link;
		unsigned bus_base;
		config_map = pci_read_config32(dev, reg);
		if ((config_map & 3) != 3) {
			continue;
		}
		dst_node = (config_map >> 4) & 7;
		dst_link = (config_map >> 8) & 3;
		bus_base = (config_map >> 16) & 0xff;
#if 0				
		printk_debug("node.link=bus: %d.%d=%d 0x%2x->0x%08x\n",
			dst_node, dst_link, bus_base,
			reg, config_map);
#endif
		if ((dst_node == node) && (dst_link == link)) 
		{
			return bus_base;
		}
	}
	return 0;
}

unsigned max_apicid(void)
{
	unsigned max_apicid;
	device_t dev;
	max_apicid = 0;
	for(dev = all_devices; dev; dev = dev->next) {
		if (dev->path.type != DEVICE_PATH_APIC)
			continue;
		if (dev->path.apic.apic_id > max_apicid) {
			max_apicid = dev->path.apic.apic_id;
		}
	}
	return max_apicid;
}

void *smp_write_config_table(void *v)
{
	static const char sig[4] = "PCMP";
	static const char oem[8] = "LNXI    ";
	static const char productid[12] = "HDAMA       ";
	struct mp_config_table *mc;
	unsigned char bus_num;
	unsigned char bus_isa;
	unsigned char bus_chain_0;
	unsigned char bus_8131_1;
	unsigned char bus_8131_2;
	unsigned char bus_8111_1;
	unsigned apicid_base;
	unsigned apicid_8111;
	unsigned apicid_8131_1;
	unsigned apicid_8131_2;

	mc = (void *)(((char *)v) + SMP_FLOATING_TABLE_LEN);
	memset(mc, 0, sizeof(*mc));

	memcpy(mc->mpc_signature, sig, sizeof(sig));
	mc->mpc_length = sizeof(*mc); /* initially just the header */
	mc->mpc_spec = 0x04;
	mc->mpc_checksum = 0; /* not yet computed */
	memcpy(mc->mpc_oem, oem, sizeof(oem));
	memcpy(mc->mpc_productid, productid, sizeof(productid));
	mc->mpc_oemptr = 0;
	mc->mpc_oemsize = 0;
	mc->mpc_entry_count = 0; /* No entries yet... */
	mc->mpc_lapic = LAPIC_ADDR;
	mc->mpe_length = 0;
	mc->mpe_checksum = 0;
	mc->reserved = 0;

	smp_write_processors_inorder(mc);

	apicid_base = max_apicid() + 1;
	apicid_8111 = apicid_base;
	apicid_8131_1 = apicid_base + 1;
	apicid_8131_2 = apicid_base + 2;
	{
		device_t dev;

		/* HT chain 0 */
		bus_chain_0 = node_link_to_bus(0, 0);
		if (bus_chain_0 == 0) {
			printk_debug("ERROR - cound not find bus for node 0 chain 0, using defaults\n");
			bus_chain_0 = 1;
		}

		/* 8111 */
		dev = dev_find_slot(bus_chain_0, PCI_DEVFN(0x03,0));
		if (dev) {
			bus_8111_1 = pci_read_config8(dev, PCI_SECONDARY_BUS);
			bus_isa	   = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
			bus_isa++;
		}
		else {
			printk_debug("ERROR - could not find PCI 1:03.0, using defaults\n");

			bus_8111_1 = 4;
			bus_isa = 5;
		}
		/* 8131-1 */
		dev = dev_find_slot(bus_chain_0, PCI_DEVFN(0x01,0));
		if (dev) {
			bus_8131_1 = pci_read_config8(dev, PCI_SECONDARY_BUS);

		}
		else {
			printk_debug("ERROR - could not find PCI 1:01.0, using defaults\n");

			bus_8131_1 = 2;
		}
		/* 8131-2 */
		dev = dev_find_slot(bus_chain_0, PCI_DEVFN(0x02,0));
		if (dev) {
			bus_8131_2 = pci_read_config8(dev, PCI_SECONDARY_BUS);

		}
		else {
			printk_debug("ERROR - could not find PCI 1:02.0, using defaults\n");

			bus_8131_2 = 3;
		}
	}

	/* define bus and isa numbers */
	for(bus_num = 0; bus_num < bus_isa; bus_num++) {
		smp_write_bus(mc, bus_num, "PCI	  ");
	}
	smp_write_bus(mc, bus_isa, "ISA	  ");

	/* IOAPIC handling */
	smp_write_ioapic(mc, apicid_8111, 0x11, 0xfec00000);
	{
		device_t dev;
		struct resource *res;
		/* 8131 apic 3 */
		dev = dev_find_slot(bus_chain_0, PCI_DEVFN(0x01,1));
		if (dev) {
			res = find_resource(dev, PCI_BASE_ADDRESS_0);
			if (res) {
				smp_write_ioapic(mc, apicid_8131_1, 0x11, res->base);
			}
		}
		/* 8131 apic 4 */
		dev = dev_find_slot(bus_chain_0, PCI_DEVFN(0x02,1));
		if (dev) {
			res = find_resource(dev, PCI_BASE_ADDRESS_0);
			if (res) {
				smp_write_ioapic(mc, apicid_8131_2, 0x11, res->base);
			}
		}
	}

	/* ISA backward compatibility interrupts  */
	smp_write_intsrc(mc, mp_ExtINT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x00, apicid_8111, 0x00);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x01, apicid_8111, 0x01);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x00, apicid_8111, 0x02);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x03, apicid_8111, 0x03);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x04, apicid_8111, 0x04);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x05, apicid_8111, 0x05);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x06, apicid_8111, 0x06);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x07, apicid_8111, 0x07);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x08, apicid_8111, 0x08);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x09, apicid_8111, 0x09);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x0a, apicid_8111, 0x0a);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x0b, apicid_8111, 0x0b);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x0c, apicid_8111, 0x0c);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x0d, apicid_8111, 0x0d);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x0e, apicid_8111, 0x0e);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x0f, apicid_8111, 0x0f);

	/* Standard local interrupt assignments */
	smp_write_lintsrc(mc, mp_ExtINT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x00, MP_APIC_ALL, 0x00);
	smp_write_lintsrc(mc, mp_NMI, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT,
		bus_isa, 0x00, MP_APIC_ALL, 0x01);

	/* PCI Ints:	     Type    Trigger                Polarity                 Bus ID      PCIDEVNUM|IRQ  APIC ID PIN# */
	/* On board nics */
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x03<<2)|0, apicid_8111, 0x13);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x04<<2)|0, apicid_8111, 0x13);
	/* On board SATA */
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x05<<2)|0, apicid_8111, 0x11);

	/* PCI Slot 1 */
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_2, (0x01<<2)|0, apicid_8111, 0x11);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_2, (0x01<<2)|1, apicid_8111, 0x12);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_2, (0x01<<2)|2, apicid_8111, 0x13);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_2, (0x01<<2)|3, apicid_8111, 0x10);

	/* PCI Slot 2 */
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_2, (0x02<<2)|0, apicid_8111, 0x12);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_2, (0x02<<2)|1, apicid_8111, 0x13);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_2, (0x02<<2)|2, apicid_8111, 0x10);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_2, (0x02<<2)|3, apicid_8111, 0x11);

	/* PCI Slot 3 */
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x01<<2)|0, apicid_8111, 0x11);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x01<<2)|1, apicid_8111, 0x12);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x01<<2)|2, apicid_8111, 0x13);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x01<<2)|3, apicid_8111, 0x10);

	/* PCI Slot 4 */
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x02<<2)|0, apicid_8111, 0x12);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x02<<2)|1, apicid_8111, 0x13);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x02<<2)|2, apicid_8111, 0x10);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8131_1, (0x02<<2)|3, apicid_8111, 0x11);

	/* PCI Slot 5 */
#warning "FIXME get the irqs right, it's just hacked to work for now"
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8111_1, (0x05<<2)|0, apicid_8111, 0x11);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8111_1, (0x05<<2)|1, apicid_8111, 0x12);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8111_1, (0x05<<2)|2, apicid_8111, 0x13);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8111_1, (0x05<<2)|3, apicid_8111, 0x10);

	/* PCI Slot 6 */
#warning "FIXME get the irqs right, it's just hacked to work for now"
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8111_1, (0x04<<2)|0, apicid_8111, 0x10);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8111_1, (0x04<<2)|1, apicid_8111, 0x11);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8111_1, (0x04<<2)|2, apicid_8111, 0x12);
	smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_DEFAULT|MP_IRQ_POLARITY_DEFAULT, bus_8111_1, (0x04<<2)|3, apicid_8111, 0x13);

	/* There is no extension information... */

	/* Compute the checksums */
	mc->mpe_checksum = smp_compute_checksum(smp_next_mpc_entry(mc), mc->mpe_length);
	mc->mpc_checksum = smp_compute_checksum(mc, mc->mpc_length);
	printk_debug("Wrote the mp table end at: %p - %p\n",
		mc, smp_next_mpe_entry(mc));
	return smp_next_mpe_entry(mc);
}

void reboot_if_hotswap(void)
{
	/* Hack patch work around for hot swap enable 33mhz problem */
	device_t dev;
	uint32_t data;
	unsigned long htic;
	int reset;
	int i;

	reset = 0;
	printk_debug("Looking for bad PCIX MHz input\n");
	dev = dev_find_slot(1, PCI_DEVFN(0x02,0));
	data = pci_read_config32(dev, 0xa0);
	if(!(((data>>16)&0x03)==0x03)) {
		reset=1;
		printk_debug("Bad PCIX MHz - Reset\n");
	}
	printk_debug("Looking for bad Hot Swap Enable\n");
	dev = dev_find_slot(1, PCI_DEVFN(0x01,0));
	data = pci_read_config32(dev, 0x48);
	if(data & 0x0c) {
		reset=1;
		printk_debug("Bad Hot Swap start - Reset\n");
	}
	if(reset) {
		/* enable cf9 */
		dev = dev_find_slot(node_link_to_bus(0, 0), PCI_DEVFN(0x04,3));
		pci_write_config8(dev, 0x41, 0xf1);
		/* reset */
		dev = dev_find_slot(0, PCI_DEVFN(0x18,0));
		htic = pci_read_config32(dev, HT_INIT_CONTROL);
		htic &= ~HTIC_BIOSR_Detect;
		pci_write_config32(dev, HT_INIT_CONTROL, htic);
		outb(0x0e, 0x0cf9);
	}
	else {
		printk_debug("OK 133MHz & Hot Swap is off\n");
	}
}

unsigned long write_smp_table(unsigned long addr)
{
	void *v;
	reboot_if_hotswap();

	v = smp_write_floating_table(addr);
	return (unsigned long)smp_write_config_table(v);
}

