diff options
Diffstat (limited to 'drivers/pnp/pnpacpi/rsparser.c')
| -rw-r--r-- | drivers/pnp/pnpacpi/rsparser.c | 940 |
1 files changed, 940 insertions, 0 deletions
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c new file mode 100644 index 000000000..ff0356fb3 --- /dev/null +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -0,0 +1,940 @@ +/* + * pnpacpi -- PnP ACPI driver + * + * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr> + * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com> + * Copyright (C) 2008 Hewlett-Packard Development Company, L.P. + * Bjorn Helgaas <bjorn.helgaas@hp.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/kernel.h> +#include <linux/acpi.h> +#include <linux/pci.h> +#include <linux/pnp.h> +#include <linux/slab.h> +#include "../base.h" +#include "pnpacpi.h" + +static void decode_irq_flags(struct pnp_dev *dev, int flags, int *triggering, + int *polarity, int *shareable) +{ + switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL | + IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE)) { + case IORESOURCE_IRQ_LOWLEVEL: + *triggering = ACPI_LEVEL_SENSITIVE; + *polarity = ACPI_ACTIVE_LOW; + break; + case IORESOURCE_IRQ_HIGHLEVEL: + *triggering = ACPI_LEVEL_SENSITIVE; + *polarity = ACPI_ACTIVE_HIGH; + break; + case IORESOURCE_IRQ_LOWEDGE: + *triggering = ACPI_EDGE_SENSITIVE; + *polarity = ACPI_ACTIVE_LOW; + break; + case IORESOURCE_IRQ_HIGHEDGE: + *triggering = ACPI_EDGE_SENSITIVE; + *polarity = ACPI_ACTIVE_HIGH; + break; + default: + dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n", + flags); + *triggering = ACPI_EDGE_SENSITIVE; + *polarity = ACPI_ACTIVE_HIGH; + break; + } + + if (flags & IORESOURCE_IRQ_SHAREABLE) + *shareable = ACPI_SHARED; + else + *shareable = ACPI_EXCLUSIVE; +} + +static int dma_flags(struct pnp_dev *dev, int type, int bus_master, + int transfer) +{ + int flags = 0; + + if (bus_master) + flags |= IORESOURCE_DMA_MASTER; + switch (type) { + case ACPI_COMPATIBILITY: + flags |= IORESOURCE_DMA_COMPATIBLE; + break; + case ACPI_TYPE_A: + flags |= IORESOURCE_DMA_TYPEA; + break; + case ACPI_TYPE_B: + flags |= IORESOURCE_DMA_TYPEB; + break; + case ACPI_TYPE_F: + flags |= IORESOURCE_DMA_TYPEF; + break; + default: + /* Set a default value ? */ + flags |= IORESOURCE_DMA_COMPATIBLE; + dev_err(&dev->dev, "invalid DMA type %d\n", type); + } + switch (transfer) { + case ACPI_TRANSFER_8: + flags |= IORESOURCE_DMA_8BIT; + break; + case ACPI_TRANSFER_8_16: + flags |= IORESOURCE_DMA_8AND16BIT; + break; + case ACPI_TRANSFER_16: + flags |= IORESOURCE_DMA_16BIT; + break; + default: + /* Set a default value ? */ + flags |= IORESOURCE_DMA_8AND16BIT; + dev_err(&dev->dev, "invalid DMA transfer type %d\n", transfer); + } + + return flags; +} + +/* + * Allocated Resources + */ + +static void pnpacpi_add_irqresource(struct pnp_dev *dev, struct resource *r) +{ + if (!(r->flags & IORESOURCE_DISABLED)) + pcibios_penalize_isa_irq(r->start, 1); + + pnp_add_resource(dev, r); +} + +/* + * Device CSRs that do not appear in PCI config space should be described + * via ACPI. This would normally be done with Address Space Descriptors + * marked as "consumer-only," but old versions of Windows and Linux ignore + * the producer/consumer flag, so HP invented a vendor-defined resource to + * describe the location and size of CSR space. + */ +static struct acpi_vendor_uuid hp_ccsr_uuid = { + .subtype = 2, + .data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a, + 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad }, +}; + +static int vendor_resource_matches(struct pnp_dev *dev, + struct acpi_resource_vendor_typed *vendor, + struct acpi_vendor_uuid *match, + int expected_len) +{ + int uuid_len = sizeof(vendor->uuid); + u8 uuid_subtype = vendor->uuid_subtype; + u8 *uuid = vendor->uuid; + int actual_len; + + /* byte_length includes uuid_subtype and uuid */ + actual_len = vendor->byte_length - uuid_len - 1; + + if (uuid_subtype == match->subtype && + uuid_len == sizeof(match->data) && + memcmp(uuid, match->data, uuid_len) == 0) { + if (expected_len && expected_len != actual_len) { + dev_err(&dev->dev, "wrong vendor descriptor size; " + "expected %d, found %d bytes\n", + expected_len, actual_len); + return 0; + } + + return 1; + } + + return 0; +} + +static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev, + struct acpi_resource_vendor_typed *vendor) +{ + if (vendor_resource_matches(dev, vendor, &hp_ccsr_uuid, 16)) { + u64 start, length; + + memcpy(&start, vendor->byte_data, sizeof(start)); + memcpy(&length, vendor->byte_data + 8, sizeof(length)); + + pnp_add_mem_resource(dev, start, start + length - 1, 0); + } +} + +static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, + void *data) +{ + struct pnp_dev *dev = data; + struct acpi_resource_dma *dma; + struct acpi_resource_vendor_typed *vendor_typed; + struct resource_win win = {{0}, 0}; + struct resource *r = &win.res; + int i, flags; + + if (acpi_dev_resource_address_space(res, &win) + || acpi_dev_resource_ext_address_space(res, &win)) { + pnp_add_resource(dev, &win.res); + return AE_OK; + } + + r->flags = 0; + if (acpi_dev_resource_interrupt(res, 0, r)) { + pnpacpi_add_irqresource(dev, r); + for (i = 1; acpi_dev_resource_interrupt(res, i, r); i++) + pnpacpi_add_irqresource(dev, r); + + if (i > 1) { + /* + * The IRQ encoder puts a single interrupt in each + * descriptor, so if a _CRS descriptor has more than + * one interrupt, we won't be able to re-encode it. + */ + if (pnp_can_write(dev)) { + dev_warn(&dev->dev, "multiple interrupts in " + "_CRS descriptor; configuration can't " + "be changed\n"); + dev->capabilities &= ~PNP_WRITE; + } + } + return AE_OK; + } else if (r->flags & IORESOURCE_DISABLED) { + pnp_add_irq_resource(dev, 0, IORESOURCE_DISABLED); + return AE_OK; + } + + switch (res->type) { + case ACPI_RESOURCE_TYPE_MEMORY24: + case ACPI_RESOURCE_TYPE_MEMORY32: + case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: + if (acpi_dev_resource_memory(res, r)) + pnp_add_resource(dev, r); + break; + case ACPI_RESOURCE_TYPE_IO: + case ACPI_RESOURCE_TYPE_FIXED_IO: + if (acpi_dev_resource_io(res, r)) + pnp_add_resource(dev, r); + break; + case ACPI_RESOURCE_TYPE_DMA: + dma = &res->data.dma; + if (dma->channel_count > 0 && dma->channels[0] != (u8) -1) + flags = dma_flags(dev, dma->type, dma->bus_master, + dma->transfer); + else + flags = IORESOURCE_DISABLED; + pnp_add_dma_resource(dev, dma->channels[0], flags); + break; + + case ACPI_RESOURCE_TYPE_START_DEPENDENT: + case ACPI_RESOURCE_TYPE_END_DEPENDENT: + break; + + case ACPI_RESOURCE_TYPE_VENDOR: + vendor_typed = &res->data.vendor_typed; + pnpacpi_parse_allocated_vendor(dev, vendor_typed); + break; + + case ACPI_RESOURCE_TYPE_END_TAG: + break; + + case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: + break; + + default: + dev_warn(&dev->dev, "unknown resource type %d in _CRS\n", + res->type); + return AE_ERROR; + } + + return AE_OK; +} + +int pnpacpi_parse_allocated_resource(struct pnp_dev *dev) +{ + struct acpi_device *acpi_dev = dev->data; + acpi_handle handle = acpi_dev->handle; + acpi_status status; + + pnp_dbg(&dev->dev, "parse allocated resources\n"); + + pnp_init_resources(dev); + + status = acpi_walk_resources(handle, METHOD_NAME__CRS, + pnpacpi_allocated_resource, dev); + + if (ACPI_FAILURE(status)) { + if (status != AE_NOT_FOUND) + dev_err(&dev->dev, "can't evaluate _CRS: %d", status); + return -EPERM; + } + return 0; +} + +static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource_dma *p) +{ + int i; + unsigned char map = 0, flags; + + for (i = 0; i < p->channel_count; i++) + map |= 1 << p->channels[i]; + + flags = dma_flags(dev, p->type, p->bus_master, p->transfer); + pnp_register_dma_resource(dev, option_flags, map, flags); +} + +static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource_irq *p) +{ + int i; + pnp_irq_mask_t map; + unsigned char flags; + + bitmap_zero(map.bits, PNP_IRQ_NR); + for (i = 0; i < p->interrupt_count; i++) + if (p->interrupts[i]) + __set_bit(p->interrupts[i], map.bits); + + flags = acpi_dev_irq_flags(p->triggering, p->polarity, p->sharable); + pnp_register_irq_resource(dev, option_flags, &map, flags); +} + +static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource_extended_irq *p) +{ + int i; + pnp_irq_mask_t map; + unsigned char flags; + + bitmap_zero(map.bits, PNP_IRQ_NR); + for (i = 0; i < p->interrupt_count; i++) { + if (p->interrupts[i]) { + if (p->interrupts[i] < PNP_IRQ_NR) + __set_bit(p->interrupts[i], map.bits); + else + dev_err(&dev->dev, "ignoring IRQ %d option " + "(too large for %d entry bitmap)\n", + p->interrupts[i], PNP_IRQ_NR); + } + } + + flags = acpi_dev_irq_flags(p->triggering, p->polarity, p->sharable); + pnp_register_irq_resource(dev, option_flags, &map, flags); +} + +static __init void pnpacpi_parse_port_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource_io *io) +{ + unsigned char flags = 0; + + if (io->io_decode == ACPI_DECODE_16) + flags = IORESOURCE_IO_16BIT_ADDR; + pnp_register_port_resource(dev, option_flags, io->minimum, io->maximum, + io->alignment, io->address_length, flags); +} + +static __init void pnpacpi_parse_fixed_port_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource_fixed_io *io) +{ + pnp_register_port_resource(dev, option_flags, io->address, io->address, + 0, io->address_length, IORESOURCE_IO_FIXED); +} + +static __init void pnpacpi_parse_mem24_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource_memory24 *p) +{ + unsigned char flags = 0; + + if (p->write_protect == ACPI_READ_WRITE_MEMORY) + flags = IORESOURCE_MEM_WRITEABLE; + pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum, + p->alignment, p->address_length, flags); +} + +static __init void pnpacpi_parse_mem32_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource_memory32 *p) +{ + unsigned char flags = 0; + + if (p->write_protect == ACPI_READ_WRITE_MEMORY) + flags = IORESOURCE_MEM_WRITEABLE; + pnp_register_mem_resource(dev, option_flags, p->minimum, p->maximum, + p->alignment, p->address_length, flags); +} + +static __init void pnpacpi_parse_fixed_mem32_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource_fixed_memory32 *p) +{ + unsigned char flags = 0; + + if (p->write_protect == ACPI_READ_WRITE_MEMORY) + flags = IORESOURCE_MEM_WRITEABLE; + pnp_register_mem_resource(dev, option_flags, p->address, p->address, + 0, p->address_length, flags); +} + +static __init void pnpacpi_parse_address_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource *r) +{ + struct acpi_resource_address64 addr, *p = &addr; + acpi_status status; + unsigned char flags = 0; + + status = acpi_resource_to_address64(r, p); + if (ACPI_FAILURE(status)) { + dev_warn(&dev->dev, "can't convert resource type %d\n", + r->type); + return; + } + + if (p->resource_type == ACPI_MEMORY_RANGE) { + if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) + flags = IORESOURCE_MEM_WRITEABLE; + pnp_register_mem_resource(dev, option_flags, p->address.minimum, + p->address.minimum, 0, p->address.address_length, + flags); + } else if (p->resource_type == ACPI_IO_RANGE) + pnp_register_port_resource(dev, option_flags, p->address.minimum, + p->address.minimum, 0, p->address.address_length, + IORESOURCE_IO_FIXED); +} + +static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev, + unsigned int option_flags, + struct acpi_resource *r) +{ + struct acpi_resource_extended_address64 *p = &r->data.ext_address64; + unsigned char flags = 0; + + if (p->resource_type == ACPI_MEMORY_RANGE) { + if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY) + flags = IORESOURCE_MEM_WRITEABLE; + pnp_register_mem_resource(dev, option_flags, p->address.minimum, + p->address.minimum, 0, p->address.address_length, + flags); + } else if (p->resource_type == ACPI_IO_RANGE) + pnp_register_port_resource(dev, option_flags, p->address.minimum, + p->address.minimum, 0, p->address.address_length, + IORESOURCE_IO_FIXED); +} + +struct acpipnp_parse_option_s { + struct pnp_dev *dev; + unsigned int option_flags; +}; + +static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res, + void *data) +{ + int priority; + struct acpipnp_parse_option_s *parse_data = data; + struct pnp_dev *dev = parse_data->dev; + unsigned int option_flags = parse_data->option_flags; + + switch (res->type) { + case ACPI_RESOURCE_TYPE_IRQ: + pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq); + break; + + case ACPI_RESOURCE_TYPE_DMA: + pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma); + break; + + case ACPI_RESOURCE_TYPE_START_DEPENDENT: + 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; + } + parse_data->option_flags = pnp_new_dependent_set(dev, priority); + break; + + case ACPI_RESOURCE_TYPE_END_DEPENDENT: + parse_data->option_flags = 0; + break; + + case ACPI_RESOURCE_TYPE_IO: + pnpacpi_parse_port_option(dev, option_flags, &res->data.io); + break; + + case ACPI_RESOURCE_TYPE_FIXED_IO: + pnpacpi_parse_fixed_port_option(dev, option_flags, + &res->data.fixed_io); + break; + + case ACPI_RESOURCE_TYPE_VENDOR: + case ACPI_RESOURCE_TYPE_END_TAG: + break; + + case ACPI_RESOURCE_TYPE_MEMORY24: + pnpacpi_parse_mem24_option(dev, option_flags, + &res->data.memory24); + break; + + case ACPI_RESOURCE_TYPE_MEMORY32: + pnpacpi_parse_mem32_option(dev, option_flags, + &res->data.memory32); + break; + + case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: + pnpacpi_parse_fixed_mem32_option(dev, option_flags, + &res->data.fixed_memory32); + break; + + case ACPI_RESOURCE_TYPE_ADDRESS16: + case ACPI_RESOURCE_TYPE_ADDRESS32: + case ACPI_RESOURCE_TYPE_ADDRESS64: + pnpacpi_parse_address_option(dev, option_flags, res); + break; + + case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: + pnpacpi_parse_ext_address_option(dev, option_flags, res); + break; + + case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: + pnpacpi_parse_ext_irq_option(dev, option_flags, + &res->data.extended_irq); + break; + + case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: + break; + + default: + dev_warn(&dev->dev, "unknown resource type %d in _PRS\n", + res->type); + return AE_ERROR; + } + + return AE_OK; +} + +int __init pnpacpi_parse_resource_option_data(struct pnp_dev *dev) +{ + struct acpi_device *acpi_dev = dev->data; + acpi_handle handle = acpi_dev->handle; + acpi_status status; + struct acpipnp_parse_option_s parse_data; + + pnp_dbg(&dev->dev, "parse resource options\n"); + + parse_data.dev = dev; + parse_data.option_flags = 0; + + status = acpi_walk_resources(handle, METHOD_NAME__PRS, + pnpacpi_option_resource, &parse_data); + + if (ACPI_FAILURE(status)) { + if (status != AE_NOT_FOUND) + dev_err(&dev->dev, "can't evaluate _PRS: %d", status); + return -EPERM; + } + return 0; +} + +static int pnpacpi_supported_resource(struct acpi_resource *res) +{ + switch (res->type) { + case ACPI_RESOURCE_TYPE_IRQ: + case ACPI_RESOURCE_TYPE_DMA: + case ACPI_RESOURCE_TYPE_IO: + case ACPI_RESOURCE_TYPE_FIXED_IO: + case ACPI_RESOURCE_TYPE_MEMORY24: + case ACPI_RESOURCE_TYPE_MEMORY32: + case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: + case ACPI_RESOURCE_TYPE_ADDRESS16: + case ACPI_RESOURCE_TYPE_ADDRESS32: + case ACPI_RESOURCE_TYPE_ADDRESS64: + case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: + case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: + return 1; + } + return 0; +} + +/* + * Set resource + */ +static acpi_status pnpacpi_count_resources(struct acpi_resource *res, + void *data) +{ + int *res_cnt = data; + + if (pnpacpi_supported_resource(res)) + (*res_cnt)++; + return AE_OK; +} + +static acpi_status pnpacpi_type_resources(struct acpi_resource *res, void *data) +{ + struct acpi_resource **resource = data; + + if (pnpacpi_supported_resource(res)) { + (*resource)->type = res->type; + (*resource)->length = sizeof(struct acpi_resource); + if (res->type == ACPI_RESOURCE_TYPE_IRQ) + (*resource)->data.irq.descriptor_length = + res->data.irq.descriptor_length; + (*resource)++; + } + + return AE_OK; +} + +int pnpacpi_build_resource_template(struct pnp_dev *dev, + struct acpi_buffer *buffer) +{ + struct acpi_device *acpi_dev = dev->data; + acpi_handle handle = acpi_dev->handle; + 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)) { + dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status); + return -EINVAL; + } + if (!res_cnt) + return -EINVAL; + buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1; + buffer->pointer = kzalloc(buffer->length - 1, GFP_KERNEL); + if (!buffer->pointer) + return -ENOMEM; + + 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); + dev_err(&dev->dev, "can't evaluate _CRS: %d\n", status); + return -EINVAL; + } + /* resource will pointer the end resource now */ + resource->type = ACPI_RESOURCE_TYPE_END_TAG; + resource->length = sizeof(struct acpi_resource); + + return 0; +} + +static void pnpacpi_encode_irq(struct pnp_dev *dev, + struct acpi_resource *resource, + struct resource *p) +{ + struct acpi_resource_irq *irq = &resource->data.irq; + int triggering, polarity, shareable; + + if (!pnp_resource_enabled(p)) { + irq->interrupt_count = 0; + pnp_dbg(&dev->dev, " encode irq (%s)\n", + p ? "disabled" : "missing"); + return; + } + + decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable); + irq->triggering = triggering; + irq->polarity = polarity; + irq->sharable = shareable; + irq->interrupt_count = 1; + irq->interrupts[0] = p->start; + + pnp_dbg(&dev->dev, " encode irq %d %s %s %s (%d-byte descriptor)\n", + (int) p->start, + triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge", + polarity == ACPI_ACTIVE_LOW ? "low" : "high", + irq->sharable == ACPI_SHARED ? "shared" : "exclusive", + irq->descriptor_length); +} + +static void pnpacpi_encode_ext_irq(struct pnp_dev *dev, + struct acpi_resource *resource, + struct resource *p) +{ + struct acpi_resource_extended_irq *extended_irq = &resource->data.extended_irq; + int triggering, polarity, shareable; + + if (!pnp_resource_enabled(p)) { + extended_irq->interrupt_count = 0; + pnp_dbg(&dev->dev, " encode extended irq (%s)\n", + p ? "disabled" : "missing"); + return; + } + + decode_irq_flags(dev, p->flags, &triggering, &polarity, &shareable); + extended_irq->producer_consumer = ACPI_CONSUMER; + extended_irq->triggering = triggering; + extended_irq->polarity = polarity; + extended_irq->sharable = shareable; + extended_irq->interrupt_count = 1; + extended_irq->interrupts[0] = p->start; + + pnp_dbg(&dev->dev, " encode irq %d %s %s %s\n", (int) p->start, + triggering == ACPI_LEVEL_SENSITIVE ? "level" : "edge", + polarity == ACPI_ACTIVE_LOW ? "low" : "high", + extended_irq->sharable == ACPI_SHARED ? "shared" : "exclusive"); +} + +static void pnpacpi_encode_dma(struct pnp_dev *dev, + struct acpi_resource *resource, + struct resource *p) +{ + struct acpi_resource_dma *dma = &resource->data.dma; + + if (!pnp_resource_enabled(p)) { + dma->channel_count = 0; + pnp_dbg(&dev->dev, " encode dma (%s)\n", + p ? "disabled" : "missing"); + return; + } + + /* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */ + switch (p->flags & IORESOURCE_DMA_SPEED_MASK) { + case IORESOURCE_DMA_TYPEA: + dma->type = ACPI_TYPE_A; + break; + case IORESOURCE_DMA_TYPEB: + dma->type = ACPI_TYPE_B; + break; + case IORESOURCE_DMA_TYPEF: + dma->type = ACPI_TYPE_F; + break; + default: + dma->type = ACPI_COMPATIBILITY; + } + + switch (p->flags & IORESOURCE_DMA_TYPE_MASK) { + case IORESOURCE_DMA_8BIT: + dma->transfer = ACPI_TRANSFER_8; + break; + case IORESOURCE_DMA_8AND16BIT: + dma->transfer = ACPI_TRANSFER_8_16; + break; + default: + dma->transfer = ACPI_TRANSFER_16; + } + + dma->bus_master = !!(p->flags & IORESOURCE_DMA_MASTER); + dma->channel_count = 1; + dma->channels[0] = p->start; + + pnp_dbg(&dev->dev, " encode dma %d " + "type %#x transfer %#x master %d\n", + (int) p->start, dma->type, dma->transfer, dma->bus_master); +} + +static void pnpacpi_encode_io(struct pnp_dev *dev, + struct acpi_resource *resource, + struct resource *p) +{ + struct acpi_resource_io *io = &resource->data.io; + + if (pnp_resource_enabled(p)) { + /* Note: pnp_assign_port copies pnp_port->flags into p->flags */ + io->io_decode = (p->flags & IORESOURCE_IO_16BIT_ADDR) ? + ACPI_DECODE_16 : ACPI_DECODE_10; + io->minimum = p->start; + io->maximum = p->end; + io->alignment = 0; /* Correct? */ + io->address_length = resource_size(p); + } else { + io->minimum = 0; + io->address_length = 0; + } + + pnp_dbg(&dev->dev, " encode io %#x-%#x decode %#x\n", io->minimum, + io->minimum + io->address_length - 1, io->io_decode); +} + +static void pnpacpi_encode_fixed_io(struct pnp_dev *dev, + struct acpi_resource *resource, + struct resource *p) +{ + struct acpi_resource_fixed_io *fixed_io = &resource->data.fixed_io; + + if (pnp_resource_enabled(p)) { + fixed_io->address = p->start; + fixed_io->address_length = resource_size(p); + } else { + fixed_io->address = 0; + fixed_io->address_length = 0; + } + + pnp_dbg(&dev->dev, " encode fixed_io %#x-%#x\n", fixed_io->address, + fixed_io->address + fixed_io->address_length - 1); +} + +static void pnpacpi_encode_mem24(struct pnp_dev *dev, + struct acpi_resource *resource, + struct resource *p) +{ + struct acpi_resource_memory24 *memory24 = &resource->data.memory24; + + if (pnp_resource_enabled(p)) { + /* Note: pnp_assign_mem copies pnp_mem->flags into p->flags */ + memory24->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ? + ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; + memory24->minimum = p->start; + memory24->maximum = p->end; + memory24->alignment = 0; + memory24->address_length = resource_size(p); + } else { + memory24->minimum = 0; + memory24->address_length = 0; + } + + pnp_dbg(&dev->dev, " encode mem24 %#x-%#x write_protect %#x\n", + memory24->minimum, + memory24->minimum + memory24->address_length - 1, + memory24->write_protect); +} + +static void pnpacpi_encode_mem32(struct pnp_dev *dev, + struct acpi_resource *resource, + struct resource *p) +{ + struct acpi_resource_memory32 *memory32 = &resource->data.memory32; + + if (pnp_resource_enabled(p)) { + memory32->write_protect = p->flags & IORESOURCE_MEM_WRITEABLE ? + ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; + memory32->minimum = p->start; + memory32->maximum = p->end; + memory32->alignment = 0; + memory32->address_length = resource_size(p); + } else { + memory32->minimum = 0; + memory32->alignment = 0; + } + + pnp_dbg(&dev->dev, " encode mem32 %#x-%#x write_protect %#x\n", + memory32->minimum, + memory32->minimum + memory32->address_length - 1, + memory32->write_protect); +} + +static void pnpacpi_encode_fixed_mem32(struct pnp_dev *dev, + struct acpi_resource *resource, + struct resource *p) +{ + struct acpi_resource_fixed_memory32 *fixed_memory32 = &resource->data.fixed_memory32; + + if (pnp_resource_enabled(p)) { + fixed_memory32->write_protect = + p->flags & IORESOURCE_MEM_WRITEABLE ? + ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY; + fixed_memory32->address = p->start; + fixed_memory32->address_length = resource_size(p); + } else { + fixed_memory32->address = 0; + fixed_memory32->address_length = 0; + } + + pnp_dbg(&dev->dev, " encode fixed_mem32 %#x-%#x write_protect %#x\n", + fixed_memory32->address, + fixed_memory32->address + fixed_memory32->address_length - 1, + fixed_memory32->write_protect); +} + +int pnpacpi_encode_resources(struct pnp_dev *dev, 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 = buffer->pointer; + int port = 0, irq = 0, dma = 0, mem = 0; + + pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt); + while (i < res_cnt) { + switch (resource->type) { + case ACPI_RESOURCE_TYPE_IRQ: + pnpacpi_encode_irq(dev, resource, + pnp_get_resource(dev, IORESOURCE_IRQ, irq)); + irq++; + break; + + case ACPI_RESOURCE_TYPE_DMA: + pnpacpi_encode_dma(dev, resource, + pnp_get_resource(dev, IORESOURCE_DMA, dma)); + dma++; + break; + case ACPI_RESOURCE_TYPE_IO: + pnpacpi_encode_io(dev, resource, + pnp_get_resource(dev, IORESOURCE_IO, port)); + port++; + break; + case ACPI_RESOURCE_TYPE_FIXED_IO: + pnpacpi_encode_fixed_io(dev, resource, + pnp_get_resource(dev, IORESOURCE_IO, port)); + port++; + break; + case ACPI_RESOURCE_TYPE_MEMORY24: + pnpacpi_encode_mem24(dev, resource, + pnp_get_resource(dev, IORESOURCE_MEM, mem)); + mem++; + break; + case ACPI_RESOURCE_TYPE_MEMORY32: + pnpacpi_encode_mem32(dev, resource, + pnp_get_resource(dev, IORESOURCE_MEM, mem)); + mem++; + break; + case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: + pnpacpi_encode_fixed_mem32(dev, resource, + pnp_get_resource(dev, IORESOURCE_MEM, mem)); + mem++; + break; + case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: + pnpacpi_encode_ext_irq(dev, resource, + pnp_get_resource(dev, IORESOURCE_IRQ, irq)); + irq++; + break; + case ACPI_RESOURCE_TYPE_START_DEPENDENT: + case ACPI_RESOURCE_TYPE_END_DEPENDENT: + case ACPI_RESOURCE_TYPE_VENDOR: + case ACPI_RESOURCE_TYPE_END_TAG: + case ACPI_RESOURCE_TYPE_ADDRESS16: + case ACPI_RESOURCE_TYPE_ADDRESS32: + case ACPI_RESOURCE_TYPE_ADDRESS64: + case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64: + case ACPI_RESOURCE_TYPE_GENERIC_REGISTER: + default: /* other type */ + dev_warn(&dev->dev, "can't encode unknown resource " + "type %d\n", resource->type); + return -EINVAL; + } + resource++; + i++; + } + return 0; +} |