[PATCH v8 16/25] alpha/PCI: Add static PCI resource attribute macros
From: Krzysztof Wilczyński <kwilczynski@kernel.org>
Date: 2026-06-19 08:53:03
Also in:
linux-alpha, linux-pci
Subsystem:
alpha port, the rest · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Linus Torvalds
Add macros for declaring static binary attributes for Alpha's PCI resource files: - pci_dev_resource_attr(), for dense/BWX systems (mmap dense) - pci_dev_resource_sparse_attr(), for sparse systems (mmap sparse) - pci_dev_resource_dense_attr(), for dense companion files (mmap dense) Each macro creates a const bin_attribute with the BAR index stored in the .private property and the appropriate .mmap callback. Tested-by: Magnus Lindholm <linmag7@gmail.com> Tested-by: Shivaprasad G Bhat <redacted> Acked-by: Magnus Lindholm <linmag7@gmail.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> --- arch/alpha/kernel/pci-sysfs.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index 6cf688621ea9..650f7795cc40 100644
--- a/arch/alpha/kernel/pci-sysfs.c
+++ b/arch/alpha/kernel/pci-sysfs.c@@ -104,6 +104,26 @@ static int pci_mmap_resource_dense(struct file *filp, struct kobject *kobj, return pci_mmap_resource(kobj, attr, vma, 0); } +#define __pci_dev_resource_attr(_suffix, _bar, _name, _mmap) \ +static const struct bin_attribute \ +pci_dev_resource##_bar##_suffix##_attr = { \ + .attr = { .name = __stringify(_name), .mode = 0600 }, \ + .private = (void *)(unsigned long)(_bar), \ + .mmap = (_mmap), \ +} + +#define pci_dev_resource_attr(_bar) \ + __pci_dev_resource_attr(, _bar, resource##_bar, \ + pci_mmap_resource_dense) + +#define pci_dev_resource_sparse_attr(_bar) \ + __pci_dev_resource_attr(_sparse, _bar, resource##_bar##_sparse, \ + pci_mmap_resource_sparse) + +#define pci_dev_resource_dense_attr(_bar) \ + __pci_dev_resource_attr(_dense, _bar, resource##_bar##_dense, \ + pci_mmap_resource_dense) + /** * pci_remove_resource_files - cleanup resource files * @pdev: pci_dev to cleanup
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2.54.0