--- /dev/null
+/*
+ * 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;
+}
Code Review / kvmfornfv.git / blobdiff