Date: Thu, 23 Feb 2023 19:34:41 GMT From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 368a398b9c3e - releng/13.2 - LinuxKPI: return an address string in pci_name() Message-ID: <202302231934.31NJYf4W020483@gitrepo.freebsd.org>
next in thread | raw e-mail | index | archive | help
The branch releng/13.2 has been updated by bz: URL: https://cgit.FreeBSD.org/src/commit/?id=368a398b9c3e01359d9997aaa3ccff6415129f74 commit 368a398b9c3e01359d9997aaa3ccff6415129f74 Author: Val Packett <val@packett.cool> AuthorDate: 2023-02-06 21:50:13 +0000 Commit: Bjoern A. Zeeb <bz@FreeBSD.org> CommitDate: 2023-02-23 19:33:31 +0000 LinuxKPI: return an address string in pci_name() amdgpu's virtual display feature uses pci_name() to match a module parameter string, and the documentation shows an example of `0000:26:00.0` for the name. In our case the name was just `drmn`, which is not actually unique across devices. The other consumers are wireless drivers, which will benefit from this change. Generate the expected string for pci_name() to return. Related to: https://github.com/freebsd/drm-kmod/issues/134 Sponsored by: https://www.patreon.com/valpackett Reviewed by: bz, hselasky, manu (earlier) Approved by: re (cperciva) Differential Revision: https://reviews.freebsd.org/D34248 (cherry picked from commit 393b0ba25f1a54dcc3f94244933c665f1c471d1a) (cherry picked from commit 30960c51e646c51134fcb72e0adc881f36a41c38) --- sys/compat/linuxkpi/common/include/linux/pci.h | 4 ++-- sys/compat/linuxkpi/common/src/linux_pci.c | 4 ++++ 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/sys/compat/linuxkpi/common/include/linux/pci.h b/sys/compat/linuxkpi/common/include/linux/pci.h index 3d43595df047..e050cb5021cf 100644 --- a/sys/compat/linuxkpi/common/include/linux/pci.h +++ b/sys/compat/linuxkpi/common/include/linux/pci.h @@ -351,6 +351,7 @@ struct pci_dev { bool msix_enabled; uint8_t msi_cap; struct msi_desc **msi_desc; + char *path_name; }; /* XXX add kassert here on the mmio offset */ @@ -470,8 +471,7 @@ pci_resource_flags(struct pci_dev *pdev, int bar) static inline const char * pci_name(struct pci_dev *d) { - - return device_get_desc(d->dev.bsddev); + return d->path_name; } static inline void * diff --git a/sys/compat/linuxkpi/common/src/linux_pci.c b/sys/compat/linuxkpi/common/src/linux_pci.c index a66627612778..3dbcf5cfbce0 100644 --- a/sys/compat/linuxkpi/common/src/linux_pci.c +++ b/sys/compat/linuxkpi/common/src/linux_pci.c @@ -309,6 +309,9 @@ lkpifill_pci_dev(device_t dev, struct pci_dev *pdev) pdev->subsystem_device = pci_get_subdevice(dev); pdev->class = pci_get_class(dev); pdev->revision = pci_get_revid(dev); + pdev->path_name = kasprintf(GFP_KERNEL, "%04d:%02d:%02d.%d", + pci_get_domain(dev), pci_get_bus(dev), pci_get_slot(dev), + pci_get_function(dev)); pdev->bus = malloc(sizeof(*pdev->bus), M_DEVBUF, M_WAITOK | M_ZERO); /* * This should be the upstream bridge; pci_upstream_bridge() @@ -352,6 +355,7 @@ lkpinew_pci_dev_release(struct device *dev) free(pdev->msi_desc[i], M_DEVBUF); free(pdev->msi_desc, M_DEVBUF); } + kfree(pdev->path_name); free(pdev, M_DEVBUF); }
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?202302231934.31NJYf4W020483>