[PATCH v8 22/25] PCI/sysfs: Add legacy I/O and memory attribute macros
From: Krzysztof Wilczyński <kwilczynski@kernel.org>
Date: 2026-06-19 08:53:25
Also in:
linux-alpha, linux-pci
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
Add two macros for declaring static binary attributes for PCI legacy I/O port and ISA memory space files: - pci_legacy_resource_io_attr(), for legacy I/O port space (read/write) - pci_legacy_resource_mem_attr(), for legacy memory space (mmap) Each macro sets the fixed attribute size. Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> --- drivers/pci/pci-sysfs.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index a861484ac0c0..7f1d8e07924f 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c@@ -893,6 +893,27 @@ pci_llseek_resource_legacy(struct file *filep, } #ifdef HAVE_PCI_LEGACY + +#define pci_legacy_resource_io_attr(_suffix, _size) \ +static const struct bin_attribute pci_legacy_io##_suffix##_attr = { \ + .attr = { .name = "legacy_io" __stringify(_suffix), .mode = 0600 }, \ + .size = (_size), \ + .read = pci_read_legacy_io, \ + .write = pci_write_legacy_io, \ + .f_mapping = iomem_get_mapping, \ + .llseek = pci_llseek_resource_legacy, \ + .mmap = pci_mmap_legacy_io, \ +} + +#define pci_legacy_resource_mem_attr(_suffix, _size) \ +static const struct bin_attribute pci_legacy_mem##_suffix##_attr = { \ + .attr = { .name = "legacy_mem" __stringify(_suffix), .mode = 0600 }, \ + .size = (_size), \ + .f_mapping = iomem_get_mapping, \ + .llseek = pci_llseek_resource_legacy, \ + .mmap = pci_mmap_legacy_mem, \ +} + /** * pci_read_legacy_io - read byte(s) from legacy I/O port space * @filp: open sysfs file
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2.54.0