Date: Tue, 14 Nov 2017 05:05:05 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r325793 - head/sys/dev/pci Message-ID: <201711140505.vAE555QF042553@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: imp Date: Tue Nov 14 05:05:05 2017 New Revision: 325793 URL: https://svnweb.freebsd.org/changeset/base/325793 Log: Provide pcie_link_status and pcie_link_cap convenience functions. Sponsored by: Netflix Modified: head/sys/dev/pci/pci.c head/sys/dev/pci/pcivar.h Modified: head/sys/dev/pci/pci.c ============================================================================== --- head/sys/dev/pci/pci.c Tue Nov 14 05:03:38 2017 (r325792) +++ head/sys/dev/pci/pci.c Tue Nov 14 05:05:05 2017 (r325793) @@ -6115,3 +6115,31 @@ pcie_flr(device_t dev, u_int max_delay, bool force) pci_printf(&dinfo->cfg, "Transactions pending after FLR!\n"); return (true); } + +uint16_t +pcie_link_status(device_t dev) +{ + struct pci_devinfo *dinfo; + struct pcicfg_pcie *cfg; + int pos; + + dinfo = device_get_ivars(dev); + cfg = &dinfo->cfg.pcie; + pos = cfg->pcie_location; + + return pci_read_config(dev, pos + PCIER_LINK_STA, 2); +} + +uint16_t +pcie_link_caps(device_t dev) +{ + struct pci_devinfo *dinfo; + struct pcicfg_pcie *cfg; + int pos; + + dinfo = device_get_ivars(dev); + cfg = &dinfo->cfg.pcie; + pos = cfg->pcie_location; + + return pci_read_config(dev, pos + PCIER_LINK_CAP, 2); +} Modified: head/sys/dev/pci/pcivar.h ============================================================================== --- head/sys/dev/pci/pcivar.h Tue Nov 14 05:03:38 2017 (r325792) +++ head/sys/dev/pci/pcivar.h Tue Nov 14 05:05:05 2017 (r325793) @@ -598,6 +598,8 @@ uint32_t pcie_adjust_config(device_t dev, int reg, uin bool pcie_flr(device_t dev, u_int max_delay, bool force); int pcie_get_max_completion_timeout(device_t dev); bool pcie_wait_for_pending_transactions(device_t dev, u_int max_delay); +uint16_t pcie_link_status(device_t dev); +uint16_t pcie_link_caps(device_t dev); #ifdef BUS_SPACE_MAXADDR #if (BUS_SPACE_MAXADDR > 0xFFFFFFFF)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201711140505.vAE555QF042553>