On Mon, Nov 10, 2008 at 10:43:25AM +0800, Yu Zhao wrote: > Following patch adds Address Translation Services (ATS) capability > support for pciutils. > > The current release of ATS spec is v1.1, and can be obtained from: > http://www.pcisig.com/members/downloads/specifications/iov/ats_r1.1_22Apr08_cb.pdf This isn't commenting on the patch - just the availability of the spec: grundler@mb500:~/tmp$ wget http://www.pcisig.com/members/downloads/specifications/iov/ats_r1.1_22Apr08_cb.pdf --2008-11-09 20:10:08-- http://www.pcisig.com/members/downloads/specifications/iov/ats_r1.1_22Apr08_cb.pdf Resolving www.pcisig.com... 66.179.20.217 Connecting to www.pcisig.com|66.179.20.217|:80... connected. HTTP request sent, awaiting response... 401 Unauthorized Authorization failed. thanks, grant > > Following is a brief summary of the capability: > > 31 15 0 > +--------------------------------------------------+ > | ATS Extended Capability Header | 00h > -------------------------+-------------------------+ > | ATS Control Register | ATS Capability Register | 04h > -------------------------+-------------------------+ > > Following is the output from the patched 'lspci': > > Capabilities: [1c4] Address Translation Service (ATS) > ATSCap: Invalidate Queue Depth: 00 > ATSCtl: Enable-, Smallest Translation Unit: 00 > > > The testing was done with Myri-10G PCI Express NIC: > http://www.myri.com/Myri-10G/NIC/10G-PCIE-8B-2S.html > > > Thanks, > Yu > > --- > lib/header.h | 8 ++++++++ > lspci.c | 19 +++++++++++++++++++ > 2 files changed, 27 insertions(+), 0 deletions(-) > > diff --git a/lib/header.h b/lib/header.h > index aa163a0..4e84f07 100644 > --- a/lib/header.h > +++ b/lib/header.h > @@ -220,6 +220,7 @@ > #define PCI_EXT_CAP_ID_VNDR 0x0b /* Vendor specific */ > #define PCI_EXT_CAP_ID_ACS 0x0d /* Access Controls */ > #define PCI_EXT_CAP_ID_ARI 0x0e /* Alternative Routing-ID Interpretation */ > +#define PCI_EXT_CAP_ID_ATS 0x0f /* Address Translation Service */ > #define PCI_EXT_CAP_ID_SRIOV 0x10 /* Single Root I/O Virtualization */ > > /* Power Management Registers */ > @@ -953,6 +954,13 @@ > #define PCI_ARI_CTRL_ACS 0x0002 /* ACS Function Groups Enable */ > #define PCI_ARI_CTRL_FG(x) (((x) >> 4) & 7) /* Function Group */ > > +/* Address Translation Service */ > +#define PCI_ATS_CAP 0x04 /* ATS Capability Register */ > +#define PCI_ATS_CAP_IQD(x) ((x) & 0x1f) /* Invalidate Queue Depth */ > +#define PCI_ATS_CTRL 0x06 /* ATS Control Register */ > +#define PCI_ATS_CTRL_STU(x) ((x) & 0x1f) /* Smallest Translation Unit */ > +#define PCI_ATS_CTRL_ENABLE 0x80 /* ATS Enable */ > + > /* Single Root I/O Virtualization */ > #define PCI_IOV_CAP 0x04 /* SR-IOV Capability Register */ > #define PCI_IOV_CAP_VFM 0x00000001 /* VF Migration Capable */ > diff --git a/lspci.c b/lspci.c > index ddedb42..6413451 100644 > --- a/lspci.c > +++ b/lspci.c > @@ -1591,6 +1591,22 @@ cap_ari(struct device *d, int where) > } > > static void > +cap_ats(struct device *d, int where) > +{ > + u16 w; > + > + printf("Address Translation Service (ATS)\n"); > + if (!config_fetch(d, where + PCI_ATS_CAP, 4)) > + return; > + > + w = get_conf_word(d, where + PCI_ATS_CAP); > + printf("\t\tATSCap:\tInvalidate Queue Depth: %02x\n", PCI_ATS_CAP_IQD(w)); > + w = get_conf_word(d, where + PCI_ATS_CTRL); > + printf("\t\tATSCtl:\tEnable%c, Smallest Translation Unit: %02x\n", > + FLAG(w, PCI_ATS_CTRL_ENABLE), PCI_ATS_CTRL_STU(w)); > +} > + > +static void > cap_sriov(struct device *d, int where) > { > u16 b; > @@ -1694,6 +1710,9 @@ show_ext_caps(struct device *d) > case PCI_EXT_CAP_ID_ARI: > cap_ari(d, where); > break; > + case PCI_EXT_CAP_ID_ATS: > + cap_ats(d, where); > + break; > case PCI_EXT_CAP_ID_SRIOV: > cap_sriov(d, where); > break; > -- > 1.5.6.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
