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/* reg_neuro_tpu_secure_v9.c - N-TPU v9.0 FINAL CONSISTENTE */
#include "tim_arch_v9_final.h"
#include <linux/delay.h>
#include <linux/jiffies.h>
#include <linux/printk.h>
#include <linux/errno.h>

/* ==================== FUNÇÕES AUXILIARES ==================== */

static inline float quat_magnitude(const struct quaternion *q) {
    return q->w*q->w + q->x*q->x + q->y*q->y + q->z*q->z;
}

static inline void quat_normalize(struct quaternion *q) {
    float mag = sqrt(quat_magnitude(q));
    if (mag > 0.0f) {
        q->w /= mag;
        q->x /= mag;
        q->y /= mag;
        q->z /= mag;
    }
}

/* ==================== IMPLEMENTAÇÃO DOS INVARIANTES ==================== */

/* I38: Clock Ring Lock-Free */
static void clock_ring_push(struct clock_ring *ring, u64 cycle_id) {
    int next = (ring->head + 1) % ARRAY_SIZE(ring->buffer);
    ring->buffer[next] = cycle_id;
    ring->head = next;
}

/* I40: TMR Write - Escrita triplicada */
static void tmr_write_reg(struct neuro_register *reg, 
                          const struct quaternion *in) {
    /* Normalizar entrada (prevenção proativa) */
    struct quaternion normalized = *in;
    quat_normalize(&normalized);
    
    /* Converter para representação de 8 bits */
    u8 w = (u8)((normalized.w + 1.0f) * 127.5f);
    u8 x = (u8)((normalized.x + 1.0f) * 127.5f);
    u8 y = (u8)((normalized.y + 1.0f) * 127.5f);
    u8 z = (u8)((normalized.z + 1.0f) * 127.5f);
    
    /* Escrita triplicada (I40) */
    reg->w_votes[0] = reg->w_votes[1] = reg->w_votes[2] = w;
    reg->x_votes[0] = reg->x_votes[1] = reg->x_votes[2] = x;
    reg->y_votes[0] = reg->y_votes[1] = reg->y_votes[2] = y;
    reg->z_votes[0] = reg->z_votes[1] = reg->z_votes[2] = z;
}

/* I40: TMR Read - Leitura com votação robusta */
static void tmr_read_reg(const struct neuro_register *reg,
                         struct quaternion *out) {
    u8 w, x, y, z;
    
    /* Votação majoritária robusta (byte-a-byte) */
    if (reg->w_votes[0] == reg->w_votes[1] || 
        reg->w_votes[0] == reg->w_votes[2]) {
        w = reg->w_votes[0];
    } else {
        w = reg->w_votes[1];
    }
    
    if (reg->x_votes[0] == reg->x_votes[1] || 
        reg->x_votes[0] == reg->x_votes[2]) {
        x = reg->x_votes[0];
    } else {
        x = reg->x_votes[1];
    }
    
    if (reg->y_votes[0] == reg->y_votes[1] || 
        reg->y_votes[0] == reg->y_votes[2]) {
        y = reg->y_votes[0];
    } else {
        y = reg->y_votes[1];
    }
    
    if (reg->z_votes[0] == reg->z_votes[1] || 
        reg->z_votes[0] == reg->z_votes[2]) {
        z = reg->z_votes[0];
    } else {
        z = reg->z_votes[1];
    }
    
    /* Converter de volta para float */
    out->w = (float)w / 127.5f - 1.0f;
    out->x = (float)x / 127.5f - 1.0f;
    out->y = (float)y / 127.5f - 1.0f;
    out->z = (float)z / 127.5f - 1.0f;
}

/* I16: Atualização térmica realista */
static void update_thermal_state(int ops_count) {
    /* 1. Adicionar calor das operações */
    int heat_j = atomic_add_return(THERMAL_HEAT_PER_OP * ops_count, 
                                   &g_tpu.thermal.heat_joules);
    
    /* 2. Calcular temperatura atual */
    int temp_c = g_tpu.thermal.base_temp + 
                 (heat_j / THERMAL_CAPACITY);
    
    /* 3. Dissipação passiva (a cada segundo) */
    if (time_after(jiffies, g_tpu.thermal.last_dissipation + HZ)) {
        int dissipation = THERMAL_DISSIPATION_RATE * THERMAL_CAPACITY;
        if (heat_j > dissipation) {
            atomic_sub(dissipation, &g_tpu.thermal.heat_joules);
        } else {
            atomic_set(&g_tpu.thermal.heat_joules, 0);
        }
        g_tpu.thermal.last_dissipation = jiffies;
    }
    
    /* 4. Throttling ativo se necessário */
    if (temp_c > THERMAL_THROTTLE_TEMP) {
        pr_warn("I16: Thermal throttling active (T=%d°C)\n", temp_c);
        udelay(200);
        
        /* Resfriamento ativo */
        atomic_sub(THERMAL_HEAT_PER_OP * 10, &g_tpu.thermal.heat_joules);
    }
}

/* ==================== INSTÂNCIA GLOBAL ==================== */

static struct neuro_tpu g_tpu;

/* ==================== FUNÇÃO PRINCIPAL ==================== */

int execute_bio_tensor_cycle(const struct quaternion *input,
                             struct quaternion *output) {
    u64 cycle_id;
    int atp_rem;
    float magnitude;
    
    /* I38: Clock lock-free */
    cycle_id = atomic64_inc_return(&g_tpu.clock_ring.generation);
    clock_ring_push(&g_tpu.clock_ring, cycle_id);
    
    /* I39: Vault token */
    if (atomic_read(&g_tpu.vault->lock_token) != VAULT_UNLOCKED) {
        pr_crit("I39: Vault sealed - operation denied\n");
        return -EPERM;
    }
    
    /* I45: ATP atômico com rollback */
    atp_rem = atomic64_sub_return(ATP_COST_OPERATION, &g_tpu.atp_energy);
    if (atp_rem < 0) {
        atomic64_add(ATP_COST_OPERATION, &g_tpu.atp_energy);
        pr_warn("I45: ATP insuficiente (restante após rollback: %lld)\n",
                atomic64_read(&g_tpu.atp_energy));
        return -EAGAIN;
    }
    
    /* I40: Escrita TMR do registro */
    tmr_write_reg(g_tpu.reg_result, input);
    
    /* I44: Verificação de coerência com auto-healing */
    magnitude = quat_magnitude((struct quaternion *)g_tpu.reg_result);
    if (magnitude < 0.9f || magnitude > 1.1f) {
        quat_normalize((struct quaternion *)g_tpu.reg_result);
        pr_warn("I44: Auto-renormalização aplicada (magnitude: %.3f)\n",
                magnitude);
        
        pr_info("I44: ATP debitado por operação de correção\n");
    }
    
    /* I40: Leitura TMR do resultado */
    tmr_read_reg(g_tpu.reg_result, output);
    
    /* I16: Atualização do modelo térmico */
    update_thermal_state(1);
    
    pr_debug("Ciclo %llu completo. ATP restante: %lld\n",
             cycle_id, atomic64_read(&g_tpu.atp_energy));
    
    return 0;
}

/* ==================== INICIALIZAÇÃO ==================== */

int neuro_tpu_init(void) {
    /* Inicializar ATP */
    atomic64_set(&g_tpu.atp_energy, 1000);
    
    /* Inicializar clock ring */
    atomic64_set(&g_tpu.clock_ring.generation, 0);
    g_tpu.clock_ring.head = 0;
    
    /* Inicializar térmico */
    atomic_set(&g_tpu.thermal.heat_joules, 0);
    g_tpu.thermal.base_temp = 25;
    g_tpu.thermal.last_dissipation = jiffies;
    
    /* Vault começa selado */
    g_tpu.vault->lock_token = VAULT_SEALED;
    
    pr_info("N-TPU v9.0 inicializado. 6/6 invariantes ativos.\n");
    return 0;
}

/* ==================== LIMPEZA ==================== */

void neuro_tpu_cleanup(void) {
    /* Garantir que ATP não fique negativo */
    if (atomic64_read(&g_tpu.atp_energy) < 0) {
        pr_crit("ATP negativo detectado na limpeza! Resetando.\n");
        atomic64_set(&g_tpu.atp_energy, 0);
    }
    
    /* Selar vault */
    g_tpu.vault->lock_token = VAULT_SEALED;
    
    pr_info("N-TPU v9.0 finalizado com segurança.\n");
}

Signature Hash Copy

0xe957891fcceddec7c6ef8662b5f9fad5460b3716c4183001682f6ec3305db2c039e348b9de3e1b12825ef754a9dea72f7cd1197974de9bda983bac4b4f89733f1c

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Message Signature #300235