diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2025-10-31 14:29:00 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2025-11-03 19:27:41 -0800 |
| commit | 9ddaf9c3ed007cd03c1335fb40920ad76f72a3d5 (patch) | |
| tree | 3d1389901282a2da52fa18bc29c6abcd4f2b18b6 /drivers/pci/probe.c | |
| parent | 1e4d2ff3ae450dab37b5b5726c3f7df3e60d6e89 (diff) | |
PCI/IDE: Report available IDE streams
The limited number of link-encryption (IDE) streams that a given set of
host bridges supports is a platform specific detail. Provide
pci_ide_init_nr_streams() as a generic facility for either platform TSM
drivers, or PCI core native IDE, to report the number available streams.
After invoking pci_ide_init_nr_streams() an "available_secure_streams"
attribute appears in PCI host bridge sysfs to convey that count.
Introduce a device-type, @pci_host_bridge_type, now that both a release
method and sysfs attribute groups are being specified for all 'struct
pci_host_bridge' instances.
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Samuel Ortiz <sameo@rivosinc.com>
Cc: Alexey Kardashevskiy <aik@amd.com>
Cc: Xu Yilun <yilun.xu@linux.intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20251031212902.2256310-9-dan.j.williams@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 93fa7ba8dfa6..cfacf5bcd073 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -653,6 +653,18 @@ static void pci_release_host_bridge_dev(struct device *dev) kfree(bridge); } +static const struct attribute_group *pci_host_bridge_groups[] = { +#ifdef CONFIG_PCI_IDE + &pci_ide_attr_group, +#endif + NULL +}; + +static const struct device_type pci_host_bridge_type = { + .groups = pci_host_bridge_groups, + .release = pci_release_host_bridge_dev, +}; + static void pci_init_host_bridge(struct pci_host_bridge *bridge) { INIT_LIST_HEAD(&bridge->windows); @@ -672,6 +684,7 @@ static void pci_init_host_bridge(struct pci_host_bridge *bridge) bridge->native_dpc = 1; bridge->domain_nr = PCI_DOMAIN_NR_NOT_SET; bridge->native_cxl_error = 1; + bridge->dev.type = &pci_host_bridge_type; pci_ide_init_host_bridge(bridge); device_initialize(&bridge->dev); @@ -686,7 +699,6 @@ struct pci_host_bridge *pci_alloc_host_bridge(size_t priv) return NULL; pci_init_host_bridge(bridge); - bridge->dev.release = pci_release_host_bridge_dev; return bridge; } |