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| author | Kishon Vijay Abraham I <kishon@ti.com> | 2021-02-01 22:58:02 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-02-23 23:12:01 +0300 |
| commit | 38ad827e3bc0f0e94628ee1d8dc31e778d9be40f (patch) | |
| tree | 4e6864844d5a556d409976131685f83ff9819df0 | |
| parent | 256ae475201b16fd69e00dd6c2d14035e4ea5745 (diff) | |
| download | linux-38ad827e3bc0f0e94628ee1d8dc31e778d9be40f.tar.xz | |
PCI: endpoint: Allow user to create sub-directory of 'EPF Device' directory
Documentation/PCI/endpoint/pci-endpoint-cfs.rst explains how a user has to
create a directory in-order to create a 'EPF Device' that can be
configured/probed by 'EPF Driver'.
Allow user to create a sub-directory of 'EPF Device' directory for any
function specific attributes that has to be exposed to the user.
Link: https://lore.kernel.org/r/20210201195809.7342-11-kishon@ti.com
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/pci/endpoint/pci-ep-cfs.c | 23 | ||||
| -rw-r--r-- | include/linux/pci-epf.h | 3 |
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pci/endpoint/pci-ep-cfs.c b/drivers/pci/endpoint/pci-ep-cfs.c index 8f750961d6ab..f3a8b833b479 100644 --- a/drivers/pci/endpoint/pci-ep-cfs.c +++ b/drivers/pci/endpoint/pci-ep-cfs.c @@ -490,7 +490,29 @@ static struct configfs_item_operations pci_epf_ops = { .release = pci_epf_release, }; +static struct config_group *pci_epf_type_make(struct config_group *group, + const char *name) +{ + struct pci_epf_group *epf_group = to_pci_epf_group(&group->cg_item); + struct config_group *epf_type_group; + + epf_type_group = pci_epf_type_add_cfs(epf_group->epf, group); + return epf_type_group; +} + +static void pci_epf_type_drop(struct config_group *group, + struct config_item *item) +{ + config_item_put(item); +} + +static struct configfs_group_operations pci_epf_type_group_ops = { + .make_group = &pci_epf_type_make, + .drop_item = &pci_epf_type_drop, +}; + static const struct config_item_type pci_epf_type = { + .ct_group_ops = &pci_epf_type_group_ops, .ct_item_ops = &pci_epf_ops, .ct_attrs = pci_epf_attrs, .ct_owner = THIS_MODULE, @@ -553,6 +575,7 @@ static struct config_group *pci_epf_make(struct config_group *group, goto free_name; } + epf->group = &epf_group->group; epf_group->epf = epf; kfree(epf_name); diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h index b241e7dd171f..6833e2160ef1 100644 --- a/include/linux/pci-epf.h +++ b/include/linux/pci-epf.h @@ -9,6 +9,7 @@ #ifndef __LINUX_PCI_EPF_H #define __LINUX_PCI_EPF_H +#include <linux/configfs.h> #include <linux/device.h> #include <linux/mod_devicetable.h> #include <linux/pci.h> @@ -128,6 +129,7 @@ struct pci_epf_bar { * EPC device * @sec_epc_bar: represents the BAR of EPF device associated with secondary EPC * @sec_epc_func_no: unique (physical) function number within the secondary EPC + * @group: configfs group associated with the EPF device */ struct pci_epf { struct device dev; @@ -150,6 +152,7 @@ struct pci_epf { struct list_head sec_epc_list; struct pci_epf_bar sec_epc_bar[6]; u8 sec_epc_func_no; + struct config_group *group; }; /** |