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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:35:05 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:39:31 +0000 |
commit | 85c675d0d09a45a135bddd15d7b385f8758c32fb (patch) | |
tree | 76267dbc9b9a130337be3640948fe397b04ac629 /arch/ia64/kernel/acpi-ext.c | |
parent | Adding upstream version 6.6.15. (diff) | |
download | linux-85c675d0d09a45a135bddd15d7b385f8758c32fb.tar.xz linux-85c675d0d09a45a135bddd15d7b385f8758c32fb.zip |
Adding upstream version 6.7.7.upstream/6.7.7
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/ia64/kernel/acpi-ext.c')
-rw-r--r-- | arch/ia64/kernel/acpi-ext.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/arch/ia64/kernel/acpi-ext.c b/arch/ia64/kernel/acpi-ext.c deleted file mode 100644 index 42cd214808..0000000000 --- a/arch/ia64/kernel/acpi-ext.c +++ /dev/null @@ -1,101 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P. - * Alex Williamson <alex.williamson@hp.com> - * Bjorn Helgaas <bjorn.helgaas@hp.com> - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <linux/acpi.h> - -#include <asm/acpi-ext.h> - -/* - * 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. - */ - -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 acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length) -{ - acpi_status status; - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - struct acpi_resource *resource; - struct acpi_resource_vendor_typed *vendor; - - status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS, &hp_ccsr_uuid, - &buffer); - - resource = buffer.pointer; - vendor = &resource->data.vendor_typed; - - if (ACPI_FAILURE(status) || vendor->byte_length < 16) { - status = AE_NOT_FOUND; - goto exit; - } - - memcpy(base, vendor->byte_data, sizeof(*base)); - memcpy(length, vendor->byte_data + 8, sizeof(*length)); - - exit: - kfree(buffer.pointer); - return status; -} - -struct csr_space { - u64 base; - u64 length; -}; - -static acpi_status find_csr_space(struct acpi_resource *resource, void *data) -{ - struct csr_space *space = data; - struct acpi_resource_address64 addr; - acpi_status status; - - status = acpi_resource_to_address64(resource, &addr); - if (ACPI_SUCCESS(status) && - addr.resource_type == ACPI_MEMORY_RANGE && - addr.address.address_length && - addr.producer_consumer == ACPI_CONSUMER) { - space->base = addr.address.minimum; - space->length = addr.address.address_length; - return AE_CTRL_TERMINATE; - } - return AE_OK; /* keep looking */ -} - -static acpi_status hp_crs_locate(acpi_handle obj, u64 *base, u64 *length) -{ - struct csr_space space = { 0, 0 }; - - acpi_walk_resources(obj, METHOD_NAME__CRS, find_csr_space, &space); - if (!space.length) - return AE_NOT_FOUND; - - *base = space.base; - *length = space.length; - return AE_OK; -} - -acpi_status hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length) -{ - acpi_status status; - - status = hp_ccsr_locate(obj, csr_base, csr_length); - if (ACPI_SUCCESS(status)) - return status; - - return hp_crs_locate(obj, csr_base, csr_length); -} -EXPORT_SYMBOL(hp_acpi_csr_space); |