*
* 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
pnp_add_io_resource(dev, start, end, flags);
}
+/*
+ * 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 void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev,
u64 start, u64 len,
int write_protect)
struct acpi_resource_dma *dma;
struct acpi_resource_io *io;
struct acpi_resource_fixed_io *fixed_io;
+ struct acpi_resource_vendor_typed *vendor_typed;
struct acpi_resource_memory24 *memory24;
struct acpi_resource_memory32 *memory32;
struct acpi_resource_fixed_memory32 *fixed_memory32;
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:
}
static __init void pnpacpi_parse_dma_option(struct pnp_dev *dev,
- struct pnp_option *option,
+ unsigned int option_flags,
struct acpi_resource_dma *p)
{
int i;
map |= 1 << p->channels[i];
flags = dma_flags(p->type, p->bus_master, p->transfer);
- pnp_register_dma_resource(dev, option, map, flags);
+ pnp_register_dma_resource(dev, option_flags, map, flags);
}
static __init void pnpacpi_parse_irq_option(struct pnp_dev *dev,
- struct pnp_option *option,
+ unsigned int option_flags,
struct acpi_resource_irq *p)
{
int i;
__set_bit(p->interrupts[i], map.bits);
flags = irq_flags(p->triggering, p->polarity, p->sharable);
- pnp_register_irq_resource(dev, option, &map, flags);
+ pnp_register_irq_resource(dev, option_flags, &map, flags);
}
static __init void pnpacpi_parse_ext_irq_option(struct pnp_dev *dev,
- struct pnp_option *option,
+ unsigned int option_flags,
struct acpi_resource_extended_irq *p)
{
int i;
return;
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);
+ 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 = irq_flags(p->triggering, p->polarity, p->sharable);
- pnp_register_irq_resource(dev, option, &map, flags);
+ pnp_register_irq_resource(dev, option_flags, &map, flags);
}
static __init void pnpacpi_parse_port_option(struct pnp_dev *dev,
- struct pnp_option *option,
+ 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, io->minimum, io->maximum,
+ 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,
- struct pnp_option *option,
+ unsigned int option_flags,
struct acpi_resource_fixed_io *io)
{
if (io->address_length == 0)
return;
- pnp_register_port_resource(dev, option, io->address, io->address, 0,
- io->address_length, IORESOURCE_IO_FIXED);
+ 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,
- struct pnp_option *option,
+ 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, p->minimum, p->maximum,
+ 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,
- struct pnp_option *option,
+ 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, p->minimum, p->maximum,
+ 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,
- struct pnp_option *option,
+ 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, p->address, p->address,
+ 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,
- struct pnp_option *option,
+ unsigned int option_flags,
struct acpi_resource *r)
{
struct acpi_resource_address64 addr, *p = &addr;
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, p->minimum, p->minimum,
- 0, p->address_length, flags);
+ pnp_register_mem_resource(dev, option_flags, p->minimum,
+ p->minimum, 0, p->address_length,
+ flags);
} else if (p->resource_type == ACPI_IO_RANGE)
- pnp_register_port_resource(dev, option, p->minimum, p->minimum,
- 0, p->address_length,
+ pnp_register_port_resource(dev, option_flags, p->minimum,
+ p->minimum, 0, p->address_length,
IORESOURCE_IO_FIXED);
}
struct acpipnp_parse_option_s {
- struct pnp_option *option;
- struct pnp_option *option_independent;
struct pnp_dev *dev;
+ unsigned int option_flags;
};
static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
void *data)
{
- int priority = 0;
+ int priority;
struct acpipnp_parse_option_s *parse_data = data;
struct pnp_dev *dev = parse_data->dev;
- struct pnp_option *option = parse_data->option;
+ unsigned int option_flags = parse_data->option_flags;
switch (res->type) {
case ACPI_RESOURCE_TYPE_IRQ:
- pnpacpi_parse_irq_option(dev, option, &res->data.irq);
+ pnpacpi_parse_irq_option(dev, option_flags, &res->data.irq);
break;
case ACPI_RESOURCE_TYPE_DMA:
- pnpacpi_parse_dma_option(dev, option, &res->data.dma);
+ pnpacpi_parse_dma_option(dev, option_flags, &res->data.dma);
break;
case ACPI_RESOURCE_TYPE_START_DEPENDENT:
priority = PNP_RES_PRIORITY_INVALID;
break;
}
- /* TBD: Consider performance/robustness bits */
- option = pnp_register_dependent_option(dev, priority);
- if (!option)
- return AE_ERROR;
- parse_data->option = option;
+ parse_data->option_flags = pnp_new_dependent_set(dev, priority);
break;
case ACPI_RESOURCE_TYPE_END_DEPENDENT:
- /*only one EndDependentFn is allowed */
- if (!parse_data->option_independent) {
- dev_warn(&dev->dev, "more than one EndDependentFn "
- "in _PRS\n");
- return AE_ERROR;
- }
- parse_data->option = parse_data->option_independent;
- parse_data->option_independent = NULL;
- dev_dbg(&dev->dev, "end dependent options\n");
+ parse_data->option_flags = 0;
break;
case ACPI_RESOURCE_TYPE_IO:
- pnpacpi_parse_port_option(dev, option, &res->data.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,
+ pnpacpi_parse_fixed_port_option(dev, option_flags,
&res->data.fixed_io);
break;
break;
case ACPI_RESOURCE_TYPE_MEMORY24:
- pnpacpi_parse_mem24_option(dev, option, &res->data.memory24);
+ pnpacpi_parse_mem24_option(dev, option_flags,
+ &res->data.memory24);
break;
case ACPI_RESOURCE_TYPE_MEMORY32:
- pnpacpi_parse_mem32_option(dev, option, &res->data.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,
+ 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, res);
+ pnpacpi_parse_address_option(dev, option_flags, res);
break;
case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
break;
case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
- pnpacpi_parse_ext_irq_option(dev, option,
+ pnpacpi_parse_ext_irq_option(dev, option_flags,
&res->data.extended_irq);
break;
dev_dbg(&dev->dev, "parse resource options\n");
- parse_data.option = pnp_register_independent_option(dev);
- if (!parse_data.option)
- return -ENOMEM;
-
- parse_data.option_independent = parse_data.option;
parse_data.dev = dev;
+ parse_data.option_flags = 0;
+
status = acpi_walk_resources(handle, METHOD_NAME__PRS,
pnpacpi_option_resource, &parse_data);
projects / linux-2.6-omap-h63xx.git / blobdiff