/*
 * Island Aruma ACPI support
 * written by Stefan Reinauer <stepan@openbios.org>
 *  (C) 2005 Stefan Reinauer
 *
 *
 *  Copyright 2005 AMD
 *  2005.9 yhlu modify that to more dynamic for AMD Opteron Based MB
 */

#include <console/console.h>
#include <string.h>
#include <arch/acpi.h>
#include <arch/ioapic.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <cpu/x86/msr.h>
#include <cpu/amd/mtrr.h>
#include <cpu/amd/amdk8_sysconf.h>
#include "northbridge/amd/amdk8/acpi.h"
#include "mb_sysconf.h"

#define DUMP_ACPI_TABLES 0

#if DUMP_ACPI_TABLES == 1
static void dump_mem(u32 start, u32 end)
{

	u32 i;
	print_debug("dump_mem:");
	for(i=start;i<end;i++) {
		if((i & 0xf)==0) {
			printk(BIOS_DEBUG, "\n%08x:", i);
		}
		printk(BIOS_DEBUG, " %02x", (unsigned char)*((unsigned char *)i));
	}
	print_debug("\n");
}
#endif

extern const unsigned char AmlCode[];
#if CONFIG_ACPI_SSDTX_NUM >= 1
extern const unsigned char AmlCode_ssdt2[];
extern const unsigned char AmlCode_ssdt3[];
extern const unsigned char AmlCode_ssdt4[];
#endif

unsigned long acpi_fill_mcfg(unsigned long current)
{
	/* Just a dummy */
	return current;
}

unsigned long acpi_fill_madt(unsigned long current)
{
	u32 gsi_base=0x18;

	struct mb_sysconf_t *m;

	m = sysconf.mb;

	/* create all subtables for processors */
	current = acpi_create_madt_lapics(current);

	/* Write 8111 IOAPIC */
	current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, m->apicid_8111,
			IO_APIC_ADDR, 0);

	/* Write all 8131 IOAPICs */
	{
		device_t dev;
		struct resource *res;
		dev = dev_find_slot(m->bus_8132_0, PCI_DEVFN((sysconf.hcdn[0]&0xff), 1));
		if (dev) {
			res = find_resource(dev, PCI_BASE_ADDRESS_0);
			if (res) {
				current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, m->apicid_8132_1,
					res->base, gsi_base );
				gsi_base+=7;

			}
		}
		dev = dev_find_slot(m->bus_8132_0, PCI_DEVFN((sysconf.hcdn[0] & 0xff)+1, 1));
		if (dev) {
			res = find_resource(dev, PCI_BASE_ADDRESS_0);
			if (res) {
				current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, m->apicid_8132_2,
					res->base, gsi_base );
				gsi_base+=7;
			}
		}

		int i;
		int j = 0;

		for(i=1; i< sysconf.hc_possible_num; i++) {
			u32 d = 0;
			if(!(sysconf.pci1234[i] & 0x1) ) continue;
			// 8131 need to use +4
			switch (sysconf.hcid[i]) {
			case 1:
				d = 7;
				break;
			case 3:
				d = 4;
				break;
			}
			switch (sysconf.hcid[i]) {
			case 1:
			case 3:
				dev = dev_find_slot(m->bus_8132a[j][0], PCI_DEVFN(m->sbdn3a[j], 1));
				if (dev) {
					res = find_resource(dev, PCI_BASE_ADDRESS_0);
					if (res) {
						current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, m->apicid_8132a[j][0],
							res->base, gsi_base );
						gsi_base+=d;
					}
				}
				dev = dev_find_slot(m->bus_8132a[j][0], PCI_DEVFN(m->sbdn3a[j]+1, 1));
				if (dev) {
					res = find_resource(dev, PCI_BASE_ADDRESS_0);
					if (res) {
						current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, m->apicid_8132a[j][1],
							res->base, gsi_base );
						gsi_base+=d;

					}
				}
				break;
			}
			j++;
		}
	}

	current += acpi_create_madt_irqoverride( (acpi_madt_irqoverride_t *)
			current, 0, 0, 2, 5 );
		/* 0: mean bus 0--->ISA */
		/* 0: PIC 0 */
		/* 2: APIC 2 */
		/* 5 mean: 0101 --> Edige-triggered, Active high*/


		/* create all subtables for processors */
	current = acpi_create_madt_lapic_nmis(current, 5, 1);
		/* 1: LINT1 connect to NMI */

	return current;
}

unsigned long acpi_fill_ssdt_generator(unsigned long current, const char *oem_table_id) {
	k8acpi_write_vars();
	return (unsigned long) (acpigen_get_current());
}

unsigned long write_acpi_tables(unsigned long start)
{
	unsigned long current;
	acpi_rsdp_t *rsdp;
	acpi_rsdt_t *rsdt;
	acpi_hpet_t *hpet;
	acpi_madt_t *madt;
	acpi_srat_t *srat;
	acpi_slit_t *slit;
	acpi_fadt_t *fadt;
	acpi_facs_t *facs;
	acpi_header_t *dsdt;
	acpi_header_t *ssdt;
	acpi_header_t *ssdtx;
	void *p;

	int i;

	get_bus_conf(); //it will get sblk, pci1234, hcdn, and sbdn

	/* Align ACPI tables to 16 bytes */
	start = ALIGN(start, 16);
	current = start;

	printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx...\n", start);

	/* We need at least an RSDP and an RSDT Table */
	rsdp = (acpi_rsdp_t *) current;
	current += sizeof(acpi_rsdp_t);
	rsdt = (acpi_rsdt_t *) current;
	current += sizeof(acpi_rsdt_t);

	/* clear all table memory */
	memset((void *)start, 0, current - start);

	acpi_write_rsdp(rsdp, rsdt, NULL);
	acpi_write_rsdt(rsdt);

	/* FACS */
	printk(BIOS_DEBUG, "ACPI:    * FACS\n");
	facs = (acpi_facs_t *) current;
	current += sizeof(acpi_facs_t);
	acpi_create_facs(facs);

	/* DSDT */
	printk(BIOS_DEBUG, "ACPI:    * DSDT at %lx\n", current);
	dsdt = (acpi_header_t *)current;
	memcpy(dsdt, &AmlCode, sizeof(acpi_header_t));
	current += dsdt->length;
	memcpy(dsdt, &AmlCode, dsdt->length);
	printk(BIOS_DEBUG, "ACPI:    * DSDT @ %p Length %x\n", dsdt, dsdt->length);

	/* FADT */
	printk(BIOS_DEBUG, "ACPI:    * FADT at %lx\n", current);
	fadt = (acpi_fadt_t *) current;
	current += sizeof(acpi_fadt_t);

	acpi_create_fadt(fadt, facs, dsdt);
	acpi_add_table(rsdp, fadt);

	/*
	 * We explicitly add these tables later on:
	 */
	printk(BIOS_DEBUG, "ACPI:    * HPET at %lx\n", current);
	hpet = (acpi_hpet_t *) current;
	current += sizeof(acpi_hpet_t);
	acpi_create_hpet(hpet);
	acpi_add_table(rsdp, hpet);

	/* If we want to use HPET Timers Linux wants an MADT */
	printk(BIOS_DEBUG, "ACPI:    * MADT at %lx\n", current);
	madt = (acpi_madt_t *) current;
	acpi_create_madt(madt);
	current+=madt->header.length;
	acpi_add_table(rsdp, madt);

	/* SRAT */
	printk(BIOS_DEBUG, "ACPI:    * SRAT at %lx\n", current);
	srat = (acpi_srat_t *) current;
	acpi_create_srat(srat);
	current+=srat->header.length;
	acpi_add_table(rsdp, srat);

	/* SLIT */
	printk(BIOS_DEBUG, "ACPI:   * SLIT at %lx\n", current);
	slit = (acpi_slit_t *) current;
	acpi_create_slit(slit);
	current+=slit->header.length;
	acpi_add_table(rsdp, slit);

	/* SSDT */
	printk(BIOS_DEBUG, "ACPI:    * SSDT at %lx\n", current);
	ssdt = (acpi_header_t *)current;

	acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR);
	current += ssdt->length;
	acpi_add_table(rsdp, ssdt);

#if CONFIG_ACPI_SSDTX_NUM >= 1

	//same htio, but different position? We may have to copy, change HCIN, and recalculate the checknum and add_table

	for(i=1;i<sysconf.hc_possible_num;i++) {  // 0: is hc sblink
		if((sysconf.pci1234[i] & 1) != 1 ) continue;
		u8 c;
		if(i<7) {
			c  = (u8) ('4' + i - 1);
		}
		else {
			c  = (u8) ('A' + i - 1 - 6);
		}
		current = ALIGN(current, 8);
		printk(BIOS_DEBUG, "ACPI:    * SSDT for PCI%c Aka hcid = %d\n", c, sysconf.hcid[i]); //pci0 and pci1 are in dsdt
		ssdtx = (acpi_header_t *)current;
		switch(sysconf.hcid[i]) {
		case 1: //8132
			p = &AmlCode_ssdt2;
			break;
		case 2: //8151
			p = &AmlCode_ssdt3;
			break;
		case 3: //8131
			p = &AmlCode_ssdt4;
			break;
		default:
			continue;
		}
		memcpy(ssdtx, p, sizeof(acpi_header_t));
		current += ssdtx->length;
		memcpy(ssdtx, p, ssdtx->length);
		update_ssdtx((void *)ssdtx, i);
		ssdtx->checksum = 0;
		ssdtx->checksum = acpi_checksum((u8 *)ssdtx, ssdtx->length);
		acpi_add_table(rsdp, ssdtx);
	}
#endif

#if DUMP_ACPI_TABLES == 1
	printk(BIOS_DEBUG, "rsdp\n");
	dump_mem(rsdp, ((void *)rsdp) + sizeof(acpi_rsdp_t));

	printk(BIOS_DEBUG, "rsdt\n");
	dump_mem(rsdt, ((void *)rsdt) + sizeof(acpi_rsdt_t));

	printk(BIOS_DEBUG, "madt\n");
	dump_mem(madt, ((void *)madt) + madt->header.length);

	printk(BIOS_DEBUG, "srat\n");
	dump_mem(srat, ((void *)srat) + srat->header.length);

	printk(BIOS_DEBUG, "slit\n");
	dump_mem(slit, ((void *)slit) + slit->header.length);

	printk(BIOS_DEBUG, "ssdt\n");
	dump_mem(ssdt, ((void *)ssdt) + ssdt->length);

	printk(BIOS_DEBUG, "fadt\n");
	dump_mem(fadt, ((void *)fadt) + fadt->header.length);
#endif

	printk(BIOS_INFO, "ACPI: done.\n");
	return current;
}