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LinuxKPI: pci.h MODULE_DEVICE_TABLE to MODULE_PNP_INFO

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Implement MODULE_PNP_INFO() support in LinuxKPI for the Linux
MODULE_DEVICE_TABLE.

This will allow us to auto-load LinuxKPI PCI drivers (drm-kmod do
not currently as they attach to vgapci0 which in turn grabs the PCI
to my understanding) and make any loading from loader or kld_list in
rc.conf unnecessary; see devmatch(8) for more information.

We need to ensure there is a DRIVER_MODULE() (or probably just
a DECLARE_MODULE but that makes not much difference) before the
MODULE_PNP_INFO (which we otherwise would not need).

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
Reviewed by:	imp, hselasky, manu
Differential Revision:	https://reviews.freebsd.org/D26651
This commit is contained in:
Bjoern A. Zeeb 2022-03-04 00:06:34 +00:00
parent fbedd9d708
commit 5493c6277a
1 changed files with 21 additions and 1 deletions
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22
sys/compat/linuxkpi/common/include/linux/pci.h
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@ -41,6 +41,7 @@
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/nv.h>
#include <sys/pciio.h>
#include <sys/rman.h>
@ -69,7 +70,26 @@ struct pci_device_id {
uintptr_t driver_data;
};
#define MODULE_DEVICE_TABLE(bus, table)
/* Linux has an empty element at the end of the ID table -> nitems() - 1. */
#define MODULE_DEVICE_TABLE(_bus, _table) \
\
static device_method_t _ ## _bus ## _ ## _table ## _methods[] = { \
DEVMETHOD_END \
}; \
\
static driver_t _ ## _bus ## _ ## _table ## _driver = { \
"lkpi_" #_bus #_table, \
_ ## _bus ## _ ## _table ## _methods, \
0 \
}; \
\
static devclass_t _ ## _bus ## _ ## _table ## _devclass; \
\
DRIVER_MODULE(lkpi_ ## _table, pci, _ ## _bus ## _ ## _table ## _driver,\
_ ## _bus ## _ ## _table ## _devclass, 0, 0); \
\
MODULE_PNP_INFO("U32:vendor;U32:device;V32:subvendor;V32:subdevice", \
_bus, lkpi_ ## _table, _table, nitems(_table) - 1)
#define PCI_ANY_ID -1U