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#include <console/console.h>
#include <device/device.h>
#include <device/path.h>
#include <cpu/cpu.h>
#include <arch/smp/mpspec.h>
#include <string.h>
#include <arch/cpu.h>
#include <cpu/x86/lapic.h>
unsigned char smp_compute_checksum(void *v, int len)
{
unsigned char *bytes;
unsigned char checksum;
int i;
bytes = v;
checksum = 0;
for(i = 0; i < len; i++) {
checksum -= bytes[i];
}
return checksum;
}
void *smp_write_floating_table(unsigned long addr)
{
struct intel_mp_floating *mf;
void *v;
/* 16 byte align the table address */
addr += 15;
addr &= ~15;
v = (void *)addr;
mf = v;
mf->mpf_signature[0] = '_';
mf->mpf_signature[1] = 'M';
mf->mpf_signature[2] = 'P';
mf->mpf_signature[3] = '_';
mf->mpf_physptr = (unsigned long)(((char *)v) + SMP_FLOATING_TABLE_LEN);
mf->mpf_length = 1;
mf->mpf_specification = 4;
mf->mpf_checksum = 0;
mf->mpf_feature1 = 0;
mf->mpf_feature2 = 0;
mf->mpf_feature3 = 0;
mf->mpf_feature4 = 0;
mf->mpf_feature5 = 0;
mf->mpf_checksum = smp_compute_checksum(mf, mf->mpf_length*16);
return v;
}
void *smp_next_mpc_entry(struct mp_config_table *mc)
{
void *v;
v = (void *)(((char *)mc) + mc->mpc_length);
return v;
}
static void smp_add_mpc_entry(struct mp_config_table *mc, unsigned length)
{
mc->mpc_length += length;
mc->mpc_entry_count++;
}
void *smp_next_mpe_entry(struct mp_config_table *mc)
{
void *v;
v = (void *)(((char *)mc) + mc->mpc_length + mc->mpe_length);
return v;
}
static void smp_add_mpe_entry(struct mp_config_table *mc, mpe_t mpe)
{
mc->mpe_length += mpe->mpe_length;
}
void smp_write_processor(struct mp_config_table *mc,
unsigned char apicid, unsigned char apicver,
unsigned char cpuflag, unsigned int cpufeature,
unsigned int featureflag)
{
struct mpc_config_processor *mpc;
mpc = smp_next_mpc_entry(mc);
memset(mpc, '\0', sizeof(*mpc));
mpc->mpc_type = MP_PROCESSOR;
mpc->mpc_apicid = apicid;
mpc->mpc_apicver = apicver;
mpc->mpc_cpuflag = cpuflag;
mpc->mpc_cpufeature = cpufeature;
mpc->mpc_featureflag = featureflag;
smp_add_mpc_entry(mc, sizeof(*mpc));
}
/* 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.
*/
void smp_write_processors(struct mp_config_table *mc)
{
int boot_apic_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;
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.u.apic.apic_id) {
cpu_flag = MPC_CPU_ENABLED | MPC_CPU_BOOTPROCESSOR;
}
smp_write_processor(mc,
cpu->path.u.apic.apic_id, apic_version,
cpu_flag, cpu_features, cpu_feature_flags
);
}
}
void smp_write_bus(struct mp_config_table *mc,
unsigned char id, unsigned char *bustype)
{
struct mpc_config_bus *mpc;
mpc = smp_next_mpc_entry(mc);
memset(mpc, '\0', sizeof(*mpc));
mpc->mpc_type = MP_BUS;
mpc->mpc_busid = id;
memcpy(mpc->mpc_bustype, bustype, sizeof(mpc->mpc_bustype));
smp_add_mpc_entry(mc, sizeof(*mpc));
}
void smp_write_ioapic(struct mp_config_table *mc,
unsigned char id, unsigned char ver,
unsigned long apicaddr)
{
struct mpc_config_ioapic *mpc;
mpc = smp_next_mpc_entry(mc);
memset(mpc, '\0', sizeof(*mpc));
mpc->mpc_type = MP_IOAPIC;
mpc->mpc_apicid = id;
mpc->mpc_apicver = ver;
mpc->mpc_flags = MPC_APIC_USABLE;
mpc->mpc_apicaddr = apicaddr;
smp_add_mpc_entry(mc, sizeof(*mpc));
}
void smp_write_intsrc(struct mp_config_table *mc,
unsigned char irqtype, unsigned short irqflag,
unsigned char srcbus, unsigned char srcbusirq,
unsigned char dstapic, unsigned char dstirq)
{
struct mpc_config_intsrc *mpc;
mpc = smp_next_mpc_entry(mc);
memset(mpc, '\0', sizeof(*mpc));
mpc->mpc_type = MP_INTSRC;
mpc->mpc_irqtype = irqtype;
mpc->mpc_irqflag = irqflag;
mpc->mpc_srcbus = srcbus;
mpc->mpc_srcbusirq = srcbusirq;
mpc->mpc_dstapic = dstapic;
mpc->mpc_dstirq = dstirq;
smp_add_mpc_entry(mc, sizeof(*mpc));
#if CONFIG_DEBUG_MPTABLE == 1
printk_info("add intsrc srcbus 0x%x srcbusirq 0x%x, dstapic 0x%x, dstirq 0x%x\n",
srcbus, srcbusirq, dstapic, dstirq);
hexdump(__FUNCTION__, mpc, sizeof(*mpc));
#endif
}
void smp_write_lintsrc(struct mp_config_table *mc,
unsigned char irqtype, unsigned short irqflag,
unsigned char srcbusid, unsigned char srcbusirq,
unsigned char destapic, unsigned char destapiclint)
{
struct mpc_config_lintsrc *mpc;
mpc = smp_next_mpc_entry(mc);
memset(mpc, '\0', sizeof(*mpc));
mpc->mpc_type = MP_LINTSRC;
mpc->mpc_irqtype = irqtype;
mpc->mpc_irqflag = irqflag;
mpc->mpc_srcbusid = srcbusid;
mpc->mpc_srcbusirq = srcbusirq;
mpc->mpc_destapic = destapic;
mpc->mpc_destapiclint = destapiclint;
smp_add_mpc_entry(mc, sizeof(*mpc));
}
void smp_write_address_space(struct mp_config_table *mc,
unsigned char busid, unsigned char address_type,
unsigned int address_base_low, unsigned int address_base_high,
unsigned int address_length_low, unsigned int address_length_high)
{
struct mp_exten_system_address_space *mpe;
mpe = smp_next_mpe_entry(mc);
memset(mpe, '\0', sizeof(*mpe));
mpe->mpe_type = MPE_SYSTEM_ADDRESS_SPACE;
mpe->mpe_length = sizeof(*mpe);
mpe->mpe_busid = busid;
mpe->mpe_address_type = address_type;
mpe->mpe_address_base_low = address_base_low;
mpe->mpe_address_base_high = address_base_high;
mpe->mpe_address_length_low = address_length_low;
mpe->mpe_address_length_high = address_length_high;
smp_add_mpe_entry(mc, (mpe_t)mpe);
}
void smp_write_bus_hierarchy(struct mp_config_table *mc,
unsigned char busid, unsigned char bus_info,
unsigned char parent_busid)
{
struct mp_exten_bus_hierarchy *mpe;
mpe = smp_next_mpe_entry(mc);
memset(mpe, '\0', sizeof(*mpe));
mpe->mpe_type = MPE_BUS_HIERARCHY;
mpe->mpe_length = sizeof(*mpe);
mpe->mpe_busid = busid;
mpe->mpe_bus_info = bus_info;
mpe->mpe_parent_busid = parent_busid;
smp_add_mpe_entry(mc, (mpe_t)mpe);
}
void smp_write_compatibility_address_space(struct mp_config_table *mc,
unsigned char busid, unsigned char address_modifier,
unsigned int range_list)
{
struct mp_exten_compatibility_address_space *mpe;
mpe = smp_next_mpe_entry(mc);
memset(mpe, '\0', sizeof(*mpe));
mpe->mpe_type = MPE_COMPATIBILITY_ADDRESS_SPACE;
mpe->mpe_length = sizeof(*mpe);
mpe->mpe_busid = busid;
mpe->mpe_address_modifier = address_modifier;
mpe->mpe_range_list = range_list;
smp_add_mpe_entry(mc, (mpe_t)mpe);
}
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