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* [PATCH v3 0/2] pciutils: Add basic decode support for CXL
@ 2020-04-10 23:24 Sean V Kelley
  2020-04-10 23:24 ` [PATCH v3 1/2] lspci: Add available DVSEC details Sean V Kelley
  2020-04-10 23:24 ` [PATCH v3 2/2] lspci: Add basic decode support for Compute eXpress Link Sean V Kelley
  0 siblings, 2 replies; 3+ messages in thread
From: Sean V Kelley @ 2020-04-10 23:24 UTC (permalink / raw)
  To: mj, bhelgaas; +Cc: linux-pci, Sean V Kelley

Changes since v2 [1]:

- Separate DVSEC capabilities from CXL and provide a means to identify.
(Bjorn Helgaas)

Changes since v1 [2]:

- Use consistent syntax to match other lspci capability output.
(Bjorn Helgaas)

[1] https://lore.kernel.org/linux-pci/20200409213019.335678-1-sean.v.kelley@linux.intel.com/
[2] https://lore.kernel.org/linux-pci/20200409183204.328057-1-sean.v.kelley@linux.intel.com/

This patch series adds support for basic lspci decode of Compute eXpress Link[3],
a new CPU interconnect building upon PCIe.  As a foundation for the CXL
support it adds separate Designated Vendor-Specific Capability (DVSEC) defines
and a cap function so as to align with PCIe r5.0, sec 7.9.6.2 terms and
provide available details.  It makes use of the Vendor ID so as to identify
a Flex Bus capable port for purposes of CXL support.

[3] https://www.computeexpresslink.org/

Sean V Kelley (2):
  lspci: Add available DVSEC details
  lspci: Add basic decode support for Compute eXpress Link

 lib/header.h        |  24 ++++
 ls-ecaps.c          |  73 +++++++++-
 tests/cap-dvsec     | 340 ++++++++++++++++++++++++++++++++++++++++++++
 tests/cap-dvsec-cxl | 340 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 776 insertions(+), 1 deletion(-)
 create mode 100644 tests/cap-dvsec
 create mode 100644 tests/cap-dvsec-cxl

--
2.26.0


^ permalink raw reply	[flat|nested] 3+ messages in thread

* [PATCH v3 1/2] lspci: Add available DVSEC details
  2020-04-10 23:24 [PATCH v3 0/2] pciutils: Add basic decode support for CXL Sean V Kelley
@ 2020-04-10 23:24 ` Sean V Kelley
  2020-04-10 23:24 ` [PATCH v3 2/2] lspci: Add basic decode support for Compute eXpress Link Sean V Kelley
  1 sibling, 0 replies; 3+ messages in thread
From: Sean V Kelley @ 2020-04-10 23:24 UTC (permalink / raw)
  To: mj, bhelgaas; +Cc: linux-pci, Sean V Kelley

Instead of current generic 'unknown' output for DVSEC, add details on
Vendor ID, Rev, etc.

Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sean V Kelley <sean.v.kelley@linux.intel.com>
---
 lib/header.h    |   4 +
 ls-ecaps.c      |  25 +++-
 tests/cap-dvsec | 340 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 368 insertions(+), 1 deletion(-)
 create mode 100644 tests/cap-dvsec

diff --git a/lib/header.h b/lib/header.h
index bfdcc80..daeddeb 100644
--- a/lib/header.h
+++ b/lib/header.h
@@ -1042,6 +1042,10 @@
 #define PCI_EVNDR_HEADER	4	/* Vendor-Specific Header */
 #define PCI_EVNDR_REGISTERS	8	/* Vendor-Specific Registers */
 
+/* PCIe Designated Vendor-Specific Capability */
+#define PCI_DVSEC_HEADER1	4	/* Designated Vendor-Specific Header 1 */
+#define PCI_DVSEC_HEADER2	8	/* Designated Vendor-Specific Header 2 */
+
 /* Access Control Services */
 #define PCI_ACS_CAP		0x04	/* ACS Capability Register */
 #define PCI_ACS_CAP_VALID	0x0001	/* ACS Source Validation */
diff --git a/ls-ecaps.c b/ls-ecaps.c
index 0021734..b82d37e 100644
--- a/ls-ecaps.c
+++ b/ls-ecaps.c
@@ -634,6 +634,29 @@ cap_rclink(struct device *d, int where)
     }
 }
 
+static void
+cap_dvsec(struct device *d, int where)
+{
+  u32 hdr;
+
+  printf("Designated Vendor-Specific:\n");
+  if (!config_fetch(d, where + PCI_DVSEC_HEADER1, 8))
+    {
+      printf("<unreadable>\n");
+      return;
+    }
+
+  hdr = get_conf_long(d, where + PCI_DVSEC_HEADER1);
+  printf("\t\tDVSEC Vendor ID=%04x Rev=%d Len=%03x <?>\n",
+    BITS(hdr, 0, 16),
+    BITS(hdr, 16, 4),
+    BITS(hdr, 20, 12));
+
+  hdr = get_conf_long(d, where + PCI_DVSEC_HEADER2);
+  printf("\t\tDVSEC ID=%04x <?>\n",
+    BITS(hdr, 0, 16));
+}
+
 static void
 cap_evendor(struct device *d, int where)
 {
@@ -924,7 +947,7 @@ show_ext_caps(struct device *d, int type)
 	    printf("Readiness Time Reporting <?>\n");
 	    break;
 	  case PCI_EXT_CAP_ID_DVSEC:
-	    printf("Designated Vendor-Specific <?>\n");
+	    cap_dvsec(d, where);
 	    break;
 	  case PCI_EXT_CAP_ID_VF_REBAR:
 	    printf("VF Resizable BAR <?>\n");
diff --git a/tests/cap-dvsec b/tests/cap-dvsec
new file mode 100644
index 0000000..3b3558c
--- /dev/null
+++ b/tests/cap-dvsec
@@ -0,0 +1,340 @@
+4e:00.0 Unassigned class [ff00]: Intel Corporation Device 0d93
+        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
+        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
+        Interrupt: pin A routed to IRQ 255
+        NUMA node: 0
+        Region 0: Memory at b3100000 (32-bit, non-prefetchable) [disabled] [size=1M]
+        Region 2: I/O ports at a400 [disabled] [size=1K]
+        Region 4: Memory at b1000000 (32-bit, prefetchable) [disabled] [size=16M]
+        Capabilities: [40] Express (v2) Root Complex Integrated Endpoint, MSI 00
+                DevCap: MaxPayload 256 bytes, PhantFunc 0
+                        ExtTag+ RBE+ FLReset+
+                DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq-
+                        RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop- FLReset-
+                        MaxPayload 128 bytes, MaxReadReq 512 bytes
+                DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
+                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, NROPrPrP-, LTR+
+                         10BitTagComp-, 10BitTagReq-, OBFF Via WAKE#, ExtFmt+, EETLPPrefix+, MaxEETLPPrefixes 1
+                         EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
+                         FRS-
+                         AtomicOpsCap: 32bit+ 64bit+ 128bitCAS+
+                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
+                         AtomicOpsCtl: ReqEn-
+        Capabilities: [80] MSI: Enable- Count=1/4 Maskable+ 64bit+
+                Address: 0000000000000000  Data: 0000
+                Masking: 00000000  Pending: 00000000
+        Capabilities: [a0] Power Management version 3
+                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
+                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
+        Capabilities: [100 v1] Advanced Error Reporting
+                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
+                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
+                UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
+                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr-
+                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
+                AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn- ECRCChkCap+ ECRCChkEn-
+                        MultHdrRecCap+ MultHdrRecEn- TLPPfxPres- HdrLogCap-
+                HeaderLog: 00000000 00000000 00000000 00000000
+        Capabilities: [200 v1] Multi-Function Virtual Channel <?>
+        Capabilities: [300 v1] Virtual Channel
+                Caps:   LPEVC=0 RefClk=100ns PATEntryBits=1
+                Arb:    Fixed- WRR32- WRR64- WRR128-
+                Ctrl:   ArbSelect=Fixed
+                Status: InProgress-
+                VC0:    Caps:   PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
+                        Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
+                        Ctrl:   Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
+                        Status: NegoPending- InProgress-
+        Capabilities: [550 v1] Multicast
+                McastCap: MaxGroups 64, WindowSz 1 (2 bytes)            McastCtl: NumGroups 1, Enable-
+                McastBAR: IndexPos 0, BaseAddr 0000000000000000
+                McastReceiveVec:      0000000000000000
+                McastBlockAllVec:     0000000000000000
+                McastBlockUntransVec: 0000000000000000
+        Capabilities: [588 v1] Latency Tolerance Reporting
+                Max snoop latency: 0ns
+                Max no snoop latency: 0ns
+        Capabilities: [5b0 v1] Transaction Processing Hints
+                Extended requester support
+                Steering table in TPH capability structure
+        Capabilities: [6e0 v1] Address Translation Service (ATS)
+                ATSCap: Invalidate Queue Depth: 00
+                ATSCtl: Enable-, Smallest Translation Unit: 00
+        Capabilities: [700 v1] Resizable BAR <?>
+        Capabilities: [714 v1] Secondary PCI Express
+                LnkCtl3: LnkEquIntrruptEn-, PerformEqu-
+                LaneErrStat: 0
+        Capabilities: [b20 v1] Page Request Interface (PRI)
+                PRICtl: Enable- Reset-
+                PRISta: RF- UPRGI- Stopped+
+                Page Request Capacity: 00000000, Page Request Allocation: 00000000
+        Capabilities: [b40 v1] Process Address Space ID (PASID)
+                PASIDCap: Exec+ Priv+, Max PASID Width: 14
+                PASIDCtl: Enable- Exec- Priv-
+        Capabilities: [b50 v1] Precision Time Measurement
+                PTMCap: Requester:- Responder:- Root:-
+                PTMClockGranularity: Unimplemented
+                PTMControl: Enabled:- RootSelected:-
+                PTMEffectiveGranularity: Unknown
+        Capabilities: [d00 v1] Vendor Specific Information: ID=0040 Rev=1 Len=04c <?>
+        Capabilities: [e00 v1] Designated Vendor Specific Extended Capability:
+                DVSEC Vendor ID=8086 Rev=0 Len=038 <?>
+                DVSEC ID=0000 <?>
+        Capabilities: [e38 v1] Device Serial Number 12-34-56-78-90-00-00-00
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+ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-- 
2.26.0


^ permalink raw reply	[flat|nested] 3+ messages in thread

* [PATCH v3 2/2] lspci: Add basic decode support for Compute eXpress Link
  2020-04-10 23:24 [PATCH v3 0/2] pciutils: Add basic decode support for CXL Sean V Kelley
  2020-04-10 23:24 ` [PATCH v3 1/2] lspci: Add available DVSEC details Sean V Kelley
@ 2020-04-10 23:24 ` Sean V Kelley
  1 sibling, 0 replies; 3+ messages in thread
From: Sean V Kelley @ 2020-04-10 23:24 UTC (permalink / raw)
  To: mj, bhelgaas; +Cc: linux-pci, Sean V Kelley

Compute eXpress Link[1] is a new CPU interconnect created with
workload accelerators in mind. The interconnect relies on PCIe
electrical and phyical interconnect for communication via a Flex Bus
port which allows designs to choose between providing PCIe or CXL.

This patch introduces basic support for lspci decode of CXL and
builds upon the existing Designated Vendor-Specific support in
lspci through identification of a Flex Bus capable Vendor ID.

[1] https://www.computeexpresslink.org/

Signed-off-by: Sean V Kelley <sean.v.kelley@linux.intel.com>
---
 lib/header.h        |  20 +++
 ls-ecaps.c          |  50 ++++++-
 tests/cap-dvsec-cxl | 340 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 409 insertions(+), 1 deletion(-)
 create mode 100644 tests/cap-dvsec-cxl

diff --git a/lib/header.h b/lib/header.h
index daeddeb..30b4eba 100644
--- a/lib/header.h
+++ b/lib/header.h
@@ -1045,6 +1045,26 @@
 /* PCIe Designated Vendor-Specific Capability */
 #define PCI_DVSEC_HEADER1	4	/* Designated Vendor-Specific Header 1 */
 #define PCI_DVSEC_HEADER2	8	/* Designated Vendor-Specific Header 2 */
+#define PCI_DVSEC_FLEXBUS_ID	0	/* Flex Bus feature capability ID */
+
+/* PCIe CXL Designated Vendor-Specific Capabilities, Control, Status */
+#define PCI_CXL_CAP		0x0a
+#define  PCI_CXL_CAP_CACHE	0x0001
+#define  PCI_CXL_CAP_IO		0x0002
+#define  PCI_CXL_CAP_MEM	0x0004
+#define  PCI_CXL_CAP_MEM_HWINIT	0x0008
+#define  PCI_CXL_CAP_HDM_CNT(x)	(((x) & (3 << 4)) >> 4)
+#define  PCI_CXL_CAP_VIRAL	0x4000
+#define PCI_CXL_CTRL		0x0c
+#define  PCI_CXL_CTRL_CACHE	0x0001
+#define  PCI_CXL_CTRL_IO	0x0002
+#define  PCI_CXL_CTRL_MEM	0x0004
+#define  PCI_CXL_CTRL_CACHE_SF_COV(x)	(((x) & (0x1f << 3)) >> 3)
+#define  PCI_CXL_CTRL_CACHE_SF_GRAN(x)	(((x) & (0x7 << 8)) >> 8)
+#define  PCI_CXL_CTRL_CACHE_CLN	0x0800
+#define  PCI_CXL_CTRL_VIRAL	0x4000
+#define PCI_CXL_STATUS		0x0e
+#define  PCI_CXL_STATUS_VIRAL	0x4000

 /* Access Control Services */
 #define PCI_ACS_CAP		0x04	/* ACS Capability Register */
diff --git a/ls-ecaps.c b/ls-ecaps.c
index b82d37e..57f649c 100644
--- a/ls-ecaps.c
+++ b/ls-ecaps.c
@@ -634,6 +634,51 @@ cap_rclink(struct device *d, int where)
     }
 }

+static void
+cap_cxl(struct device *d, int where)
+{
+  u16 l;
+
+  printf("CXL Designated Vendor-Specific:\n");
+  if (verbose < 2)
+    return;
+
+  if (!config_fetch(d, where + PCI_CXL_CAP, 12))
+    return;
+
+  l = get_conf_word(d, where + PCI_CXL_CAP);
+  printf("\t\tCXLCap:\tCache%c IO%c Mem%c Mem HW Init%c HDMCount %d Viral%c\n",
+    FLAG(l, PCI_CXL_CAP_CACHE), FLAG(l, PCI_CXL_CAP_IO), FLAG(l, PCI_CXL_CAP_MEM),
+    FLAG(l, PCI_CXL_CAP_MEM_HWINIT), PCI_CXL_CAP_HDM_CNT(l), FLAG(l, PCI_CXL_CAP_VIRAL));
+
+  l = get_conf_word(d, where + PCI_CXL_CTRL);
+  printf("\t\tCXLCtl:\tCache%c IO%c Mem%c Cache SF Cov %d Cache SF Gran %d Cache Clean%c Viral%c\n",
+    FLAG(l, PCI_CXL_CTRL_CACHE), FLAG(l, PCI_CXL_CTRL_IO), FLAG(l, PCI_CXL_CTRL_MEM),
+    PCI_CXL_CTRL_CACHE_SF_COV(l), PCI_CXL_CTRL_CACHE_SF_GRAN(l), FLAG(l, PCI_CXL_CTRL_CACHE_CLN),
+    FLAG(l, PCI_CXL_CTRL_VIRAL));
+
+  l = get_conf_word(d, where + PCI_CXL_STATUS);
+  printf("\t\tCXLSta:\tViral%c\n", FLAG(l, PCI_CXL_STATUS_VIRAL));
+}
+
+static int
+is_flexbus_cap(struct device *d, int where)
+{
+  u32 hdr;
+  u16 w;
+
+  if (!config_fetch(d, where + PCI_DVSEC_HEADER1, 8))
+    return 0;
+
+  /* Check for Designated Vendor-Specific Flex Bus Capable ID */
+  hdr = get_conf_long(d, where + PCI_DVSEC_HEADER2);
+  w = BITS(hdr, 0, 16);
+  if (w == PCI_DVSEC_FLEXBUS_ID)
+    return 1;
+
+  return 0;
+}
+
 static void
 cap_dvsec(struct device *d, int where)
 {
@@ -947,7 +992,10 @@ show_ext_caps(struct device *d, int type)
 	    printf("Readiness Time Reporting <?>\n");
 	    break;
 	  case PCI_EXT_CAP_ID_DVSEC:
-	    cap_dvsec(d, where);
+	    if (is_flexbus_cap(d, where))
+	      cap_cxl(d, where);
+	    else
+	      cap_dvsec(d, where);
 	    break;
 	  case PCI_EXT_CAP_ID_VF_REBAR:
 	    printf("VF Resizable BAR <?>\n");
diff --git a/tests/cap-dvsec-cxl b/tests/cap-dvsec-cxl
new file mode 100644
index 0000000..e5d2745
--- /dev/null
+++ b/tests/cap-dvsec-cxl
@@ -0,0 +1,340 @@
+6b:00.0 Unassigned class [ff00]: Intel Corporation Device 0d93
+        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx-
+        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
+        Interrupt: pin A routed to IRQ 255
+        NUMA node: 0
+        Region 0: Memory at b3100000 (32-bit, non-prefetchable) [disabled] [size=1M]
+        Region 2: I/O ports at a400 [disabled] [size=1K]
+        Region 4: Memory at b1000000 (32-bit, prefetchable) [disabled] [size=16M]
+        Capabilities: [40] Express (v2) Root Complex Integrated Endpoint, MSI 00
+                DevCap: MaxPayload 256 bytes, PhantFunc 0
+                        ExtTag+ RBE+ FLReset+
+                DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+
+                        RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop- FLReset-
+                        MaxPayload 128 bytes, MaxReadReq 512 bytes
+                DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
+                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, NROPrPrP-, LTR+
+                         10BitTagComp-, 10BitTagReq-, OBFF Via WAKE#, ExtFmt+, EETLPPrefix+, MaxEETLPPrefixes 1
+                         EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
+                         FRS-
+                         AtomicOpsCap: 32bit+ 64bit+ 128bitCAS+
+                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
+                         AtomicOpsCtl: ReqEn-
+        Capabilities: [80] MSI: Enable- Count=1/4 Maskable+ 64bit+
+                Address: 0000000000000000  Data: 0000
+                Masking: 00000000  Pending: 00000000
+        Capabilities: [a0] Power Management version 3
+                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
+                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
+        Capabilities: [100 v1] Advanced Error Reporting
+                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
+                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol-
+                UESvrt: DLP+ SDES- TLP+ FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
+                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr-
+                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
+                AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn+ ECRCChkCap+ ECRCChkEn+
+                        MultHdrRecCap+ MultHdrRecEn- TLPPfxPres- HdrLogCap-
+                HeaderLog: 00000000 00000000 00000000 00000000
+        Capabilities: [200 v1] Multi-Function Virtual Channel <?>
+        Capabilities: [300 v1] Virtual Channel
+                Caps:   LPEVC=0 RefClk=100ns PATEntryBits=1
+                Arb:    Fixed- WRR32- WRR64- WRR128-
+                Ctrl:   ArbSelect=Fixed
+                Status: InProgress-
+                VC0:    Caps:   PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
+                        Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
+                        Ctrl:   Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
+                        Status: NegoPending- InProgress-
+        Capabilities: [550 v1] Multicast
+                McastCap: MaxGroups 64, WindowSz 1 (2 bytes)            McastCtl: NumGroups 1, Enable-
+                McastBAR: IndexPos 0, BaseAddr 0000000000000000
+                McastReceiveVec:      0000000000000000
+                McastBlockAllVec:     0000000000000000
+                McastBlockUntransVec: 0000000000000000
+        Capabilities: [588 v1] Latency Tolerance Reporting
+                Max snoop latency: 0ns
+                Max no snoop latency: 0ns
+        Capabilities: [5b0 v1] Transaction Processing Hints
+                Extended requester support
+                Steering table in TPH capability structure
+        Capabilities: [6e0 v1] Address Translation Service (ATS)
+                ATSCap: Invalidate Queue Depth: 00
+                ATSCtl: Enable-, Smallest Translation Unit: 00
+        Capabilities: [700 v1] Resizable BAR <?>
+        Capabilities: [714 v1] Secondary PCI Express
+                LnkCtl3: LnkEquIntrruptEn-, PerformEqu-
+                LaneErrStat: 0
+        Capabilities: [b20 v1] Page Request Interface (PRI)
+                PRICtl: Enable- Reset-
+                PRISta: RF- UPRGI- Stopped+
+                Page Request Capacity: 00000000, Page Request Allocation: 00000000
+        Capabilities: [b40 v1] Process Address Space ID (PASID)
+                PASIDCap: Exec+ Priv+, Max PASID Width: 14
+                PASIDCtl: Enable- Exec- Priv-
+        Capabilities: [b50 v1] Precision Time Measurement
+                PTMCap: Requester:- Responder:- Root:-
+                PTMClockGranularity: Unimplemented
+                PTMControl: Enabled:- RootSelected:-
+                PTMEffectiveGranularity: Unknown
+        Capabilities: [d00 v1] Vendor Specific Information: ID=0040 Rev=1 Len=04c <?>
+        Capabilities: [e00 v1] CXL Designated Vendor-Specific:
+                CXLCap: Cache+ IO+ Mem+ Mem HW Init+ HDMCount 1 Viral-
+                CXLCtl: Cache+ IO+ Mem- Cache SF Cov 0 Cache SF Gran 0 Cache Clean- Viral-
+                CXLSta: Viral-
+        Capabilities: [e38 v1] Device Serial Number 12-34-56-78-90-00-00-00
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--
2.26.0


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end of thread, other threads:[~2020-04-10 23:24 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-10 23:24 [PATCH v3 0/2] pciutils: Add basic decode support for CXL Sean V Kelley
2020-04-10 23:24 ` [PATCH v3 1/2] lspci: Add available DVSEC details Sean V Kelley
2020-04-10 23:24 ` [PATCH v3 2/2] lspci: Add basic decode support for Compute eXpress Link Sean V Kelley

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