rsparser.c

linux-2.6.15.6

	mem->min = p->min_base_address;
	mem->max = p->max_base_address;
	mem->align = p->alignment;
	mem->size = p->range_length;

	mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ?
			IORESOURCE_MEM_WRITEABLE : 0;

	pnp_register_mem_resource(option,mem);
	return;
}

static void
pnpacpi_parse_fixed_mem32_option(struct pnp_option *option,
	struct acpi_resource_fixed_mem32 *p)
{
	struct pnp_mem * mem;

	if (p->range_length == 0)
		return;
	mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL);
	if (!mem)
		return;
	mem->min = mem->max = p->range_base_address;
	mem->size = p->range_length;
	mem->align = 0;

	mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ?
			IORESOURCE_MEM_WRITEABLE : 0;

	pnp_register_mem_resource(option,mem);
	return;
}

struct acpipnp_parse_option_s {
	struct pnp_option *option;
	struct pnp_option *option_independent;
	struct pnp_dev *dev;
};

static acpi_status pnpacpi_option_resource(struct acpi_resource *res, 
	void *data)
{
	int priority = 0;
	struct acpipnp_parse_option_s *parse_data = (struct acpipnp_parse_option_s *)data;
	struct pnp_dev *dev = parse_data->dev;
	struct pnp_option *option = parse_data->option;

	switch (res->id) {
		case ACPI_RSTYPE_IRQ:
			pnpacpi_parse_irq_option(option, &res->data.irq);
			break;
		case ACPI_RSTYPE_EXT_IRQ:
			pnpacpi_parse_ext_irq_option(option,
				&res->data.extended_irq);
			break;
		case ACPI_RSTYPE_DMA:
			pnpacpi_parse_dma_option(option, &res->data.dma);	
			break;
		case ACPI_RSTYPE_IO:
			pnpacpi_parse_port_option(option, &res->data.io);
			break;
		case ACPI_RSTYPE_FIXED_IO:
			pnpacpi_parse_fixed_port_option(option,
				&res->data.fixed_io);
			break;
		case ACPI_RSTYPE_MEM24:
			pnpacpi_parse_mem24_option(option, &res->data.memory24);
			break;
		case ACPI_RSTYPE_MEM32:
			pnpacpi_parse_mem32_option(option, &res->data.memory32);
			break;
		case ACPI_RSTYPE_FIXED_MEM32:
			pnpacpi_parse_fixed_mem32_option(option,
				&res->data.fixed_memory32);
			break;
		case ACPI_RSTYPE_START_DPF:
			switch (res->data.start_dpf.compatibility_priority) {
				case ACPI_GOOD_CONFIGURATION:
					priority = PNP_RES_PRIORITY_PREFERRED;
					break;
					
				case ACPI_ACCEPTABLE_CONFIGURATION:
					priority = PNP_RES_PRIORITY_ACCEPTABLE;
					break;

				case ACPI_SUB_OPTIMAL_CONFIGURATION:
					priority = PNP_RES_PRIORITY_FUNCTIONAL;
					break;
				default:
					priority = PNP_RES_PRIORITY_INVALID;
					break;
			}
			/* TBD: Considering performace/robustness bits */
			option = pnp_register_dependent_option(dev, priority);
			if (!option)
				return AE_ERROR;
			parse_data->option = option;	
			break;
		case ACPI_RSTYPE_END_DPF:
			/*only one EndDependentFn is allowed*/
			if (!parse_data->option_independent) {
				pnp_warn("PnPACPI: more than one EndDependentFn");
				return AE_ERROR;
			}
			parse_data->option = parse_data->option_independent;
			parse_data->option_independent = NULL;
			break;
		default:
			pnp_warn("PnPACPI: unknown resource type %d", res->id);
			return AE_ERROR;
	}
			
	return AE_OK;
}

acpi_status pnpacpi_parse_resource_option_data(acpi_handle handle, 
	struct pnp_dev *dev)
{
	acpi_status status;
	struct acpipnp_parse_option_s parse_data;

	parse_data.option = pnp_register_independent_option(dev);
	if (!parse_data.option)
		return AE_ERROR;
	parse_data.option_independent = parse_data.option;
	parse_data.dev = dev;
	status = acpi_walk_resources(handle, METHOD_NAME__PRS, 
		pnpacpi_option_resource, &parse_data);

	return status;
}

/*
 * Set resource
 */
static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
	void *data)
{
	int *res_cnt = (int *)data;
	switch (res->id) {
	case ACPI_RSTYPE_IRQ:
	case ACPI_RSTYPE_EXT_IRQ:
	case ACPI_RSTYPE_DMA:
	case ACPI_RSTYPE_IO:
	case ACPI_RSTYPE_FIXED_IO:
	case ACPI_RSTYPE_MEM24:
	case ACPI_RSTYPE_MEM32:
	case ACPI_RSTYPE_FIXED_MEM32:
#if 0
	case ACPI_RSTYPE_ADDRESS16:
	case ACPI_RSTYPE_ADDRESS32:
	case ACPI_RSTYPE_ADDRESS64:
#endif
		(*res_cnt) ++;
	default:
		return AE_OK;
	}
	return AE_OK;
}

static acpi_status pnpacpi_type_resources(struct acpi_resource *res,
	void *data)
{
	struct acpi_resource **resource = (struct acpi_resource **)data;	
	switch (res->id) {
	case ACPI_RSTYPE_IRQ:
	case ACPI_RSTYPE_EXT_IRQ:
	case ACPI_RSTYPE_DMA:
	case ACPI_RSTYPE_IO:
	case ACPI_RSTYPE_FIXED_IO:
	case ACPI_RSTYPE_MEM24:
	case ACPI_RSTYPE_MEM32:
	case ACPI_RSTYPE_FIXED_MEM32:
#if 0
	case ACPI_RSTYPE_ADDRESS16:
	case ACPI_RSTYPE_ADDRESS32:
	case ACPI_RSTYPE_ADDRESS64:
#endif
		(*resource)->id = res->id;
		(*resource)++;
	default:
		return AE_OK;
	}

	return AE_OK;
}

int pnpacpi_build_resource_template(acpi_handle handle, 
	struct acpi_buffer *buffer)
{
	struct acpi_resource *resource;
	int res_cnt = 0;
	acpi_status status;

	status = acpi_walk_resources(handle, METHOD_NAME__CRS, 
		pnpacpi_count_resources, &res_cnt);
	if (ACPI_FAILURE(status)) {
		pnp_err("Evaluate _CRS failed");
		return -EINVAL;
	}
	if (!res_cnt)
		return -EINVAL;
	buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
	buffer->pointer = kcalloc(1, buffer->length - 1, GFP_KERNEL);
	if (!buffer->pointer)
		return -ENOMEM;
	pnp_dbg("Res cnt %d", res_cnt);
	resource = (struct acpi_resource *)buffer->pointer;
	status = acpi_walk_resources(handle, METHOD_NAME__CRS, 
		pnpacpi_type_resources, &resource);
	if (ACPI_FAILURE(status)) {
		kfree(buffer->pointer);
		pnp_err("Evaluate _CRS failed");
		return -EINVAL;
	}
	/* resource will pointer the end resource now */
	resource->id = ACPI_RSTYPE_END_TAG;

	return 0;
}

static void pnpacpi_encode_irq(struct acpi_resource *resource, 
	struct resource *p)
{
	int edge_level, active_high_low;
	
	decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level, 
		&active_high_low);
	resource->id = ACPI_RSTYPE_IRQ;
	resource->length = sizeof(struct acpi_resource);
	resource->data.irq.edge_level = edge_level;
	resource->data.irq.active_high_low = active_high_low;
	if (edge_level == ACPI_EDGE_SENSITIVE)
		resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
	else
		resource->data.irq.shared_exclusive = ACPI_SHARED;
	resource->data.irq.number_of_interrupts = 1;
	resource->data.irq.interrupts[0] = p->start;
}

static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
	struct resource *p)
{
	int edge_level, active_high_low;
	
	decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level, 
		&active_high_low);
	resource->id = ACPI_RSTYPE_EXT_IRQ;
	resource->length = sizeof(struct acpi_resource);
	resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
	resource->data.extended_irq.edge_level = edge_level;
	resource->data.extended_irq.active_high_low = active_high_low;
	if (edge_level == ACPI_EDGE_SENSITIVE)
		resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
	else
		resource->data.irq.shared_exclusive = ACPI_SHARED;
	resource->data.extended_irq.number_of_interrupts = 1;
	resource->data.extended_irq.interrupts[0] = p->start;
}

static void pnpacpi_encode_dma(struct acpi_resource *resource,
	struct resource *p)
{
	resource->id = ACPI_RSTYPE_DMA;
	resource->length = sizeof(struct acpi_resource);
	/* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
	if (p->flags & IORESOURCE_DMA_COMPATIBLE)
		resource->data.dma.type = ACPI_COMPATIBILITY;
	else if (p->flags & IORESOURCE_DMA_TYPEA)
		resource->data.dma.type = ACPI_TYPE_A;
	else if (p->flags & IORESOURCE_DMA_TYPEB)
		resource->data.dma.type = ACPI_TYPE_B;
	else if (p->flags & IORESOURCE_DMA_TYPEF)
		resource->data.dma.type = ACPI_TYPE_F;
	if (p->flags & IORESOURCE_DMA_8BIT)
		resource->data.dma.transfer = ACPI_TRANSFER_8;
	else if (p->flags & IORESOURCE_DMA_8AND16BIT)
		resource->data.dma.transfer = ACPI_TRANSFER_8_16;
	else if (p->flags & IORESOURCE_DMA_16BIT)
		resource->data.dma.transfer = ACPI_TRANSFER_16;
	resource->data.dma.bus_master = p->flags & IORESOURCE_DMA_MASTER;
	resource->data.dma.number_of_channels = 1;
	resource->data.dma.channels[0] = p->start;
}

static void pnpacpi_encode_io(struct acpi_resource *resource,
	struct resource *p)
{
	resource->id = ACPI_RSTYPE_IO;
	resource->length = sizeof(struct acpi_resource);
	/* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
	resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR)?
		ACPI_DECODE_16 : ACPI_DECODE_10; 
	resource->data.io.min_base_address = p->start;
	resource->data.io.max_base_address = p->end;
	resource->data.io.alignment = 0; /* Correct? */
	resource->data.io.range_length = p->end - p->start + 1;
}

static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
	struct resource *p)
{
	resource->id = ACPI_RSTYPE_FIXED_IO;
	resource->length = sizeof(struct acpi_resource);
	resource->data.fixed_io.base_address = p->start;
	resource->data.fixed_io.range_length = p->end - p->start + 1;
}

static void pnpacpi_encode_mem24(struct acpi_resource *resource,
	struct resource *p)
{
	resource->id = ACPI_RSTYPE_MEM24;
	resource->length = sizeof(struct acpi_resource);
	/* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
	resource->data.memory24.read_write_attribute =
		(p->flags & IORESOURCE_MEM_WRITEABLE) ?
		ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
	resource->data.memory24.min_base_address = p->start;
	resource->data.memory24.max_base_address = p->end;
	resource->data.memory24.alignment = 0;
	resource->data.memory24.range_length = p->end - p->start + 1;
}

static void pnpacpi_encode_mem32(struct acpi_resource *resource,
	struct resource *p)
{
	resource->id = ACPI_RSTYPE_MEM32;
	resource->length = sizeof(struct acpi_resource);
	resource->data.memory32.read_write_attribute =
		(p->flags & IORESOURCE_MEM_WRITEABLE) ?
		ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
	resource->data.memory32.min_base_address = p->start;
	resource->data.memory32.max_base_address = p->end;
	resource->data.memory32.alignment = 0;
	resource->data.memory32.range_length = p->end - p->start + 1;
}

static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
	struct resource *p)
{
	resource->id = ACPI_RSTYPE_FIXED_MEM32;
	resource->length = sizeof(struct acpi_resource);
	resource->data.fixed_memory32.read_write_attribute =
		(p->flags & IORESOURCE_MEM_WRITEABLE) ?
		ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
	resource->data.fixed_memory32.range_base_address = p->start;
	resource->data.fixed_memory32.range_length = p->end - p->start + 1;
}

int pnpacpi_encode_resources(struct pnp_resource_table *res_table, 
	struct acpi_buffer *buffer)
{
	int i = 0;
	/* pnpacpi_build_resource_template allocates extra mem */
	int res_cnt = (buffer->length - 1)/sizeof(struct acpi_resource) - 1;
	struct acpi_resource *resource = (struct acpi_resource*)buffer->pointer;
	int port = 0, irq = 0, dma = 0, mem = 0;

	pnp_dbg("res cnt %d", res_cnt);
	while (i < res_cnt) {
		switch(resource->id) {
		case ACPI_RSTYPE_IRQ:
			pnp_dbg("Encode irq");
			pnpacpi_encode_irq(resource, 
				&res_table->irq_resource[irq]);
			irq++;
			break;

		case ACPI_RSTYPE_EXT_IRQ:
			pnp_dbg("Encode ext irq");
			pnpacpi_encode_ext_irq(resource, 
				&res_table->irq_resource[irq]);
			irq++;
			break;
		case ACPI_RSTYPE_DMA:
			pnp_dbg("Encode dma");
			pnpacpi_encode_dma(resource, 
				&res_table->dma_resource[dma]);
			dma ++;
			break;
		case ACPI_RSTYPE_IO:
			pnp_dbg("Encode io");
			pnpacpi_encode_io(resource, 
				&res_table->port_resource[port]);
			port ++;
			break;
		case ACPI_RSTYPE_FIXED_IO:
			pnp_dbg("Encode fixed io");
			pnpacpi_encode_fixed_io(resource,
				&res_table->port_resource[port]);
			port ++;
			break;
		case ACPI_RSTYPE_MEM24:
			pnp_dbg("Encode mem24");
			pnpacpi_encode_mem24(resource,
				&res_table->mem_resource[mem]);
			mem ++;
			break;
		case ACPI_RSTYPE_MEM32:
			pnp_dbg("Encode mem32");
			pnpacpi_encode_mem32(resource,
				&res_table->mem_resource[mem]);
			mem ++;
			break;
		case ACPI_RSTYPE_FIXED_MEM32:
			pnp_dbg("Encode fixed mem32");
			pnpacpi_encode_fixed_mem32(resource,
				&res_table->mem_resource[mem]);
			mem ++;
			break;
		default: /* other type */
			pnp_warn("unknown resource type %d", resource->id);
			return -EINVAL;
		}
		resource ++;
		i ++;
	}
	return 0;
}