C++ ps3_result函数代码示例

static int ps3_open_hv_device_sb(struct ps3_system_bus_device *dev)
{
	int result;

	BUG_ON(!dev->bus_id);
	mutex_lock(&usage_hack.mutex);

	if (ps3_is_device(dev, 1, 1)) {
		usage_hack.sb_11++;
		if (usage_hack.sb_11 > 1) {
			result = 0;
			goto done;
		}
	}

	if (ps3_is_device(dev, 1, 2)) {
		usage_hack.sb_12++;
		if (usage_hack.sb_12 > 1) {
			result = 0;
			goto done;
		}
	}

	result = lv1_open_device(dev->bus_id, dev->dev_id, 0);

	if (result) {
		pr_debug("%s:%d: lv1_open_device failed: %s\n", __func__,
			__LINE__, ps3_result(result));
			result = -EPERM;
	}

done:
	mutex_unlock(&usage_hack.mutex);
	return result;
}

int ps3_irq_plug_setup(enum ps3_cpu_binding cpu, unsigned long outlet,
	unsigned int *virq)
{
	int result;
	struct ps3_private *pd;

	result = ps3_virq_setup(cpu, outlet, virq);

	if (result) {
		pr_debug("%s:%d: ps3_virq_setup failed\n", __func__, __LINE__);
		goto fail_setup;
	}

	pd = irq_get_chip_data(*virq);

	/* Binds outlet to cpu + virq. */

	result = lv1_connect_irq_plug_ext(pd->ppe_id, pd->thread_id, *virq,
		outlet, 0);

	if (result) {
		pr_info("%s:%d: lv1_connect_irq_plug_ext failed: %s\n",
		__func__, __LINE__, ps3_result(result));
		result = -EPERM;
		goto fail_connect;
	}

	return result;

fail_connect:
	ps3_virq_destroy(*virq);
fail_setup:
	return result;
}

static int __init enable_spu(struct spu *spu)
{
	int result;

	result = lv1_enable_logical_spe(spu_pdata(spu)->spe_id,
		spu_pdata(spu)->resource_id);

	if (result) {
		pr_debug("%s:%d: lv1_enable_logical_spe failed: %s\n",
			__func__, __LINE__, ps3_result(result));
		goto fail_enable;
	}

	result = setup_areas(spu);

	if (result)
		goto fail_areas;

	result = setup_interrupts(spu);

	if (result)
		goto fail_interrupts;

	return 0;

fail_interrupts:
	spu_unmap(spu);
fail_areas:
	lv1_disable_logical_spe(spu_pdata(spu)->spe_id, 0);
fail_enable:
	return result;
}

int ps3_alloc_vuart_irq(void* virt_addr_bmp, unsigned int *virq)
{
	int result;
	unsigned long outlet;
	unsigned long lpar_addr;

	BUG_ON(!is_kernel_addr((unsigned long)virt_addr_bmp));

	lpar_addr = ps3_mm_phys_to_lpar(__pa(virt_addr_bmp));

	result = lv1_configure_virtual_uart_irq(lpar_addr, &outlet);

	if (result) {
		pr_debug("%s:%d: lv1_configure_virtual_uart_irq failed: %s\n",
			__func__, __LINE__, ps3_result(result));
		return result;
	}

	*virq = irq_create_mapping(NULL, outlet);

	pr_debug("%s:%d: outlet %lu, virq %u\n", __func__, __LINE__,
		outlet, *virq);

	return 0;
}

int ps3_sb_event_receive_port_setup(struct ps3_system_bus_device *dev,
	enum ps3_cpu_binding cpu, unsigned int *virq)
{
	/* this should go in system-bus.c */

	int result;

	result = ps3_event_receive_port_setup(cpu, virq);

	if (result)
		return result;

	result = lv1_connect_interrupt_event_receive_port(dev->bus_id,
		dev->dev_id, virq_to_hw(*virq), dev->interrupt_id);

	if (result) {
		pr_debug("%s:%d: lv1_connect_interrupt_event_receive_port"
			" failed: %s\n", __func__, __LINE__,
			ps3_result(result));
		ps3_event_receive_port_destroy(*virq);
		*virq = NO_IRQ;
		return result;
	}

	pr_debug("%s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__,
		dev->interrupt_id, *virq);

	return 0;
}

int ps3_connect_event_irq(const struct ps3_device_id *did,
	unsigned int interrupt_id, unsigned int *virq)
{
	int result;

	result = ps3_alloc_event_irq(virq);

	if (result)
		return result;

	result = lv1_connect_interrupt_event_receive_port(did->bus_id,
		did->dev_id, virq_to_hw(*virq), interrupt_id);

	if (result) {
		pr_debug("%s:%d: lv1_connect_interrupt_event_receive_port"
			" failed: %s\n", __func__, __LINE__,
			ps3_result(result));
		ps3_free_event_irq(*virq);
		*virq = NO_IRQ;
		return result;
	}

	pr_debug("%s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__,
		interrupt_id, *virq);

	return 0;
}

int ps3_sb_event_receive_port_destroy(struct ps3_system_bus_device *dev,
	unsigned int virq)
{
	/* this should go in system-bus.c */

	int result;

	pr_debug(" -> %s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__,
		dev->interrupt_id, virq);

	result = lv1_disconnect_interrupt_event_receive_port(dev->bus_id,
		dev->dev_id, virq_to_hw(virq), dev->interrupt_id);

	if (result)
		pr_debug("%s:%d: lv1_disconnect_interrupt_event_receive_port"
			" failed: %s\n", __func__, __LINE__,
			ps3_result(result));

	result = ps3_event_receive_port_destroy(virq);
	BUG_ON(result);

	/*
	 * ps3_event_receive_port_destroy() destroys the IRQ plug,
	 * so don't call ps3_irq_plug_destroy() here.
	 */

	result = ps3_virq_destroy(virq);
	BUG_ON(result);

	pr_debug(" <- %s:%d\n", __func__, __LINE__);
	return result;
}

int ps3_sb_event_receive_port_destroy(struct ps3_system_bus_device *dev,
	unsigned int virq)
{
	/*                                */

	int result;

	DBG(" -> %s:%d: interrupt_id %u, virq %u\n", __func__, __LINE__,
		dev->interrupt_id, virq);

	result = lv1_disconnect_interrupt_event_receive_port(dev->bus_id,
		dev->dev_id, virq_to_hw(virq), dev->interrupt_id);

	if (result)
		FAIL("%s:%d: lv1_disconnect_interrupt_event_receive_port"
			" failed: %s\n", __func__, __LINE__,
			ps3_result(result));

	result = ps3_event_receive_port_destroy(virq);
	BUG_ON(result);

	/*
                                                           
                                              
  */

	result = ps3_virq_destroy(virq);
	BUG_ON(result);

	DBG(" <- %s:%d\n", __func__, __LINE__);
	return result;
}

static long ps3_hpte_insert(unsigned long hpte_group, unsigned long vpn,
	unsigned long pa, unsigned long rflags, unsigned long vflags,
	int psize, int apsize, int ssize)
{
	int result;
	u64 hpte_v, hpte_r;
	u64 inserted_index;
	u64 evicted_v, evicted_r;
	u64 hpte_v_array[4], hpte_rs;
	unsigned long flags;
	long ret = -1;

	/*
	 * lv1_insert_htab_entry() will search for victim
	 * entry in both primary and secondary pte group
	 */
	vflags &= ~HPTE_V_SECONDARY;

	hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID;
	hpte_r = hpte_encode_r(ps3_mm_phys_to_lpar(pa), psize, apsize) | rflags;

	spin_lock_irqsave(&ps3_htab_lock, flags);

	/* talk hvc to replace entries BOLTED == 0 */
	result = lv1_insert_htab_entry(PS3_LPAR_VAS_ID_CURRENT, hpte_group,
				       hpte_v, hpte_r,
				       HPTE_V_BOLTED, 0,
				       &inserted_index,
				       &evicted_v, &evicted_r);

	if (result) {
		/* all entries bolted !*/
		pr_info("%s:result=%s vpn=%lx pa=%lx ix=%lx v=%llx r=%llx\n",
			__func__, ps3_result(result), vpn, pa, hpte_group,
			hpte_v, hpte_r);
		BUG();
	}

	/*
	 * see if the entry is inserted into secondary pteg
	 */
	result = lv1_read_htab_entries(PS3_LPAR_VAS_ID_CURRENT,
				       inserted_index & ~0x3UL,
				       &hpte_v_array[0], &hpte_v_array[1],
				       &hpte_v_array[2], &hpte_v_array[3],
				       &hpte_rs);
	BUG_ON(result);

	if (hpte_v_array[inserted_index % 4] & HPTE_V_SECONDARY)
		ret = (inserted_index & 7) | (1 << 3);
	else
		ret = inserted_index & 7;

	spin_unlock_irqrestore(&ps3_htab_lock, flags);

	return ret;
}

int ps3_alloc_irq(enum ps3_cpu_binding cpu, unsigned long outlet,
	unsigned int *virq)
{
	int result;
	struct ps3_private *pd;

	/* This defines the default interrupt distribution policy. */

	if (cpu == PS3_BINDING_CPU_ANY)
		cpu = 0;

	pd = &per_cpu(ps3_private, cpu);

	*virq = irq_create_mapping(NULL, outlet);

	if (*virq == NO_IRQ) {
		pr_debug("%s:%d: irq_create_mapping failed: outlet %lu\n",
			__func__, __LINE__, outlet);
		result = -ENOMEM;
		goto fail_create;
	}

	/* Binds outlet to cpu + virq. */

	result = lv1_connect_irq_plug_ext(pd->node, pd->cpu, *virq, outlet, 0);

	if (result) {
		pr_info("%s:%d: lv1_connect_irq_plug_ext failed: %s\n",
		__func__, __LINE__, ps3_result(result));
		result = -EPERM;
		goto fail_connect;
	}

	pr_debug("%s:%d: outlet %lu => cpu %u, virq %u\n", __func__, __LINE__,
		outlet, cpu, *virq);

	result = set_irq_chip_data(*virq, pd);

	if (result) {
		pr_debug("%s:%d: set_irq_chip_data failed\n",
			__func__, __LINE__);
		goto fail_set;
	}

	return result;

fail_set:
	lv1_disconnect_irq_plug_ext(pd->node, pd->cpu, *virq);
fail_connect:
	irq_dispose_mapping(*virq);
fail_create:
	return result;
}

int ps3_free_io_irq(unsigned int virq)
{
	int result;

	result = lv1_destruct_io_irq_outlet(virq_to_hw(virq));

	if (result)
		pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n",
			__func__, __LINE__, ps3_result(result));

	irq_dispose_mapping(virq);

	return result;
}

static int ps3_sb_free_mmio_region(struct ps3_mmio_region *r)
{
	int result;

	dump_mmio_region(r);
	result = lv1_unmap_device_mmio_region(r->dev->bus_id, r->dev->dev_id,
		r->lpar_addr);

	if (result)
		pr_debug("%s:%d: lv1_unmap_device_mmio_region failed: %s\n",
			__func__, __LINE__, ps3_result(result));

	r->lpar_addr = 0;
	return result;
}

int ps3_io_irq_destroy(unsigned int virq)
{
	int result;

	result = lv1_destruct_io_irq_outlet(virq_to_hw(virq));

	if (result)
		pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n",
			__func__, __LINE__, ps3_result(result));

	result = ps3_irq_plug_destroy(virq);
	BUG_ON(result);

	return result;
}

int ps3_free_vuart_irq(unsigned int virq)
{
	int result;

	result = lv1_deconfigure_virtual_uart_irq();

	if (result) {
		pr_debug("%s:%d: lv1_configure_virtual_uart_irq failed: %s\n",
			__func__, __LINE__, ps3_result(result));
		return result;
	}

	irq_dispose_mapping(virq);

	return result;
}

static int ps3_sb_mmio_region_create(struct ps3_mmio_region *r)
{
	int result;

	result = lv1_map_device_mmio_region(r->dev->bus_id, r->dev->dev_id,
		r->bus_addr, r->len, r->page_size, &r->lpar_addr);

	if (result) {
		pr_debug("%s:%d: lv1_map_device_mmio_region failed: %s\n",
			__func__, __LINE__, ps3_result(result));
		r->lpar_addr = 0;
	}

	dump_mmio_region(r);
	return result;
}