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| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2005-09-20 15:26:00 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2006-01-07 02:37:24 -0500 |
| commit | 6f957eaf79356a32e838f5f262ee9a60544b1d5b (patch) | |
| tree | 1285828e48329d78b970526729f6c631c23dd8e0 /drivers/pnp/pnpacpi | |
| parent | 0aec63e67c69545ca757a73a66f5dcf05fa484bf (diff) | |
| download | linux-6f957eaf79356a32e838f5f262ee9a60544b1d5b.tar.gz linux-6f957eaf79356a32e838f5f262ee9a60544b1d5b.tar.bz2 linux-6f957eaf79356a32e838f5f262ee9a60544b1d5b.zip | |
[ACPI] enable PNPACPI support for resource types used by HP serial ports
PNPACPI complained about and ignored devices with ADDRESS16, ADDRESS32, or
ADDRESS64 descriptors in _PRS. HP firmware uses them for built-in serial
ports, so this patch adds support for parsing these descriptors from _PRS.
Note that this does not add the corresponding support for encoding them in
preparation for _SRS, because I don't have any machine that supports _SRS
on these descriptors, so I couldn't test that support. Attempts to encode
them will cause a warning and an -EINVAL return.
http://sourceforge.net/mailarchive/forum.php?thread_id=8250154&forum_id=6102
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pnp/pnpacpi')
| -rw-r--r-- | drivers/pnp/pnpacpi/rsparser.c | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index 416d30debe6c..2424bd3620dc 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -453,6 +453,45 @@ pnpacpi_parse_fixed_mem32_option(struct pnp_option *option, return; } +static void +pnpacpi_parse_address_option(struct pnp_option *option, struct acpi_resource *r) +{ + struct acpi_resource_address64 addr, *p = &addr; + acpi_status status; + struct pnp_mem * mem; + struct pnp_port * port; + + status = acpi_resource_to_address64(r, p); + if (!ACPI_SUCCESS(status)) { + pnp_warn("PnPACPI: failed to convert resource type %d", r->id); + return; + } + + if (p->address_length == 0) + return; + + if (p->resource_type == ACPI_MEMORY_RANGE) { + mem = kcalloc(1, sizeof(struct pnp_mem), GFP_KERNEL); + if (!mem) + return; + mem->min = mem->max = p->min_address_range; + mem->size = p->address_length; + mem->align = 0; + mem->flags = (p->attribute.memory.read_write_attribute == + ACPI_READ_WRITE_MEMORY) ? IORESOURCE_MEM_WRITEABLE : 0; + pnp_register_mem_resource(option,mem); + } else if (p->resource_type == ACPI_IO_RANGE) { + port = kcalloc(1, sizeof(struct pnp_port), GFP_KERNEL); + if (!port) + return; + port->min = port->max = p->min_address_range; + port->size = p->address_length; + port->align = 0; + port->flags = PNP_PORT_FLAG_FIXED; + pnp_register_port_resource(option,port); + } +} + struct acpipnp_parse_option_s { struct pnp_option *option; struct pnp_option *option_independent; @@ -495,6 +534,11 @@ static acpi_status pnpacpi_option_resource(struct acpi_resource *res, pnpacpi_parse_fixed_mem32_option(option, &res->data.fixed_memory32); break; + case ACPI_RSTYPE_ADDRESS16: + case ACPI_RSTYPE_ADDRESS32: + case ACPI_RSTYPE_ADDRESS64: + pnpacpi_parse_address_option(option, res); + break; case ACPI_RSTYPE_START_DPF: switch (res->data.start_dpf.compatibility_priority) { case ACPI_GOOD_CONFIGURATION: @@ -568,11 +612,9 @@ static acpi_status pnpacpi_count_resources(struct acpi_resource *res, 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; @@ -593,11 +635,9 @@ static acpi_status pnpacpi_type_resources(struct acpi_resource *res, 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: |