[PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC

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* [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC
@ 2020-04-20 22:14 Sean V Kelley
  2020-04-20 22:14 ` [PATCH v6 1/2] pciutils: Decode available DVSEC details Sean V Kelley
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Sean V Kelley @ 2020-04-20 22:14 UTC (permalink / raw)
  To: mj, bhelgaas; +Cc: linux-pci, Sean V Kelley

Changes since v5 [1]:

- There can be multiple vendor specific DVSEC IDs associated with CXL.
(Bjorn Helgaas)

[1] https://lore.kernel.org/linux-pci/20200415004751.2103963-1-sean.v.kelley@linux.intel.com/

This patch series adds support for basic lspci decode of Compute eXpress Link[2],
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 DVSEC Vendor ID and DVSEC ID so as
to identify a CXL capable device.

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

Sean V Kelley (2):
  pciutils: Decode available DVSEC details
  pciutils: Decode Compute eXpress Link DVSEC

 lib/header.h        |  24 ++++
 ls-ecaps.c          |  79 +++++++++-
 tests/cap-dvsec     | 340 ++++++++++++++++++++++++++++++++++++++++++++
 tests/cap-dvsec-cxl | 340 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 782 insertions(+), 1 deletion(-)
 create mode 100644 tests/cap-dvsec
 create mode 100644 tests/cap-dvsec-cxl

--
2.26.0


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH v6 1/2] pciutils: Decode available DVSEC details
  2020-04-20 22:14 [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC Sean V Kelley
@ 2020-04-20 22:14 ` Sean V Kelley
  2020-04-20 22:14 ` [PATCH v6 2/2] pciutils: Decode Compute eXpress Link DVSEC Sean V Kelley
  2020-05-04 16:20 ` [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC Sean V Kelley
  2 siblings, 0 replies; 4+ messages in thread
From: Sean V Kelley @ 2020-04-20 22:14 UTC (permalink / raw)
  To: mj, bhelgaas; +Cc: linux-pci, Sean V Kelley

Instead of current generic 'unknown' output for DVSEC, decode 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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+e00: 23 00 81 e3 86 80 80 03 00 00 1f 00 02 00 00 00
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+f60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+f70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+f90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+fa0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-- 
2.26.0


^ permalink raw reply related	[flat|nested] 4+ messages in thread

* [PATCH v6 2/2] pciutils: Decode Compute eXpress Link DVSEC
  2020-04-20 22:14 [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC Sean V Kelley
  2020-04-20 22:14 ` [PATCH v6 1/2] pciutils: Decode available DVSEC details Sean V Kelley
@ 2020-04-20 22:14 ` Sean V Kelley
  2020-05-04 16:20 ` [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC Sean V Kelley
  2 siblings, 0 replies; 4+ messages in thread
From: Sean V Kelley @ 2020-04-20 22:14 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 physical 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 supporting CXL device using DVSEC
Vendor ID and DVSEC 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          |  56 +++++++-
 tests/cap-dvsec-cxl | 340 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 415 insertions(+), 1 deletion(-)
 create mode 100644 tests/cap-dvsec-cxl

diff --git a/lib/header.h b/lib/header.h
index daeddeb..1f831e8 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_INTEL_CXL	0	/* Designated Vendor-Specific ID for Intel CXL */
+
+/* PCIe CXL Designated Vendor-Specific Capabilities, Control, Status */
+#define PCI_CXL_CAP		0x0a	/* CXL Capability Register */
+#define  PCI_CXL_CAP_CACHE	0x0001	/* CXL.cache Protocol Support */
+#define  PCI_CXL_CAP_IO		0x0002	/* CXL.io Protocol Support */
+#define  PCI_CXL_CAP_MEM	0x0004	/* CXL.mem Protocol Support */
+#define  PCI_CXL_CAP_MEM_HWINIT	0x0008	/* CXL.mem Initalizes with HW/FW Support */
+#define  PCI_CXL_CAP_HDM_CNT(x)	(((x) & (3 << 4)) >> 4)	/* CXL Number of HDM ranges */
+#define  PCI_CXL_CAP_VIRAL	0x4000	/* CXL Viral Handling Support */
+#define PCI_CXL_CTRL		0x0c	/* CXL Control Register */
+#define  PCI_CXL_CTRL_CACHE	0x0001	/* CXL.cache Protocol Enable */
+#define  PCI_CXL_CTRL_IO	0x0002	/* CXL.io Protocol Enable */
+#define  PCI_CXL_CTRL_MEM	0x0004	/* CXL.mem Protocol Enable */
+#define  PCI_CXL_CTRL_CACHE_SF_COV(x)	(((x) & (0x1f << 3)) >> 3) /* Snoop Filter Coverage */
+#define  PCI_CXL_CTRL_CACHE_SF_GRAN(x)	(((x) & (0x7 << 8)) >> 8) /* Snoop Filter Granularity */
+#define  PCI_CXL_CTRL_CACHE_CLN	0x0800	/* CXL.cache Performance Hint on Clean Evictions */
+#define  PCI_CXL_CTRL_VIRAL	0x4000	/* CXL Viral Handling Enable */
+#define PCI_CXL_STATUS		0x0e	/* CXL Status Register */
+#define  PCI_CXL_STATUS_VIRAL	0x4000	/* CXL Viral Handling Status */
 
 /* Access Control Services */
 #define PCI_ACS_CAP		0x04	/* ACS Capability Register */
diff --git a/ls-ecaps.c b/ls-ecaps.c
index b82d37e..0151e1e 100644
--- a/ls-ecaps.c
+++ b/ls-ecaps.c
@@ -634,6 +634,57 @@ 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_cxl_cap(struct device *d, int where)
+{
+  u32 hdr;
+  u16 w;
+
+  if (!config_fetch(d, where + PCI_DVSEC_HEADER1, 8))
+    return 0;
+
+  /* Check for supported Vendor */
+  hdr = get_conf_long(d, where + PCI_DVSEC_HEADER1);
+  w = BITS(hdr, 0, 16);
+  if (w != PCI_VENDOR_ID_INTEL)
+    return 0;
+
+  /* Check for Designated Vendor-Specific ID */
+  hdr = get_conf_long(d, where + PCI_DVSEC_HEADER2);
+  w = BITS(hdr, 0, 16);
+  if (w == PCI_DVSEC_INTEL_CXL)
+    return 1;
+
+  return 0;
+}
+
 static void
 cap_dvsec(struct device *d, int where)
 {
@@ -947,7 +998,10 @@ 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_cxl_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


^ permalink raw reply related	[flat|nested] 4+ messages in thread

* Re: [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC
  2020-04-20 22:14 [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC Sean V Kelley
  2020-04-20 22:14 ` [PATCH v6 1/2] pciutils: Decode available DVSEC details Sean V Kelley
  2020-04-20 22:14 ` [PATCH v6 2/2] pciutils: Decode Compute eXpress Link DVSEC Sean V Kelley
@ 2020-05-04 16:20 ` Sean V Kelley
  2 siblings, 0 replies; 4+ messages in thread
From: Sean V Kelley @ 2020-05-04 16:20 UTC (permalink / raw)
  To: mj, bhelgaas; +Cc: linux-pci, Sean V Kelley

On 20 Apr 2020, at 15:14, Sean V Kelley wrote:

> Changes since v5 [1]:
>
> - There can be multiple vendor specific DVSEC IDs associated with CXL.
> (Bjorn Helgaas)
>
> [1] 
> https://lore.kernel.org/linux-pci/20200415004751.2103963-1-sean.v.kelley@linux.intel.com/
>
> This patch series adds support for basic lspci decode of Compute 
> eXpress Link[2],
> 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 DVSEC Vendor ID and 
> DVSEC ID so as
> to identify a CXL capable device.
>
> [2] https://www.computeexpresslink.org/

Just a light ping on these patches.

Thanks!

Sean

>
> Sean V Kelley (2):
>   pciutils: Decode available DVSEC details
>   pciutils: Decode Compute eXpress Link DVSEC
>
>  lib/header.h        |  24 ++++
>  ls-ecaps.c          |  79 +++++++++-
>  tests/cap-dvsec     | 340 
> ++++++++++++++++++++++++++++++++++++++++++++
>  tests/cap-dvsec-cxl | 340 
> ++++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 782 insertions(+), 1 deletion(-)
>  create mode 100644 tests/cap-dvsec
>  create mode 100644 tests/cap-dvsec-cxl
>
> --
> 2.26.0

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2020-05-04 16:20 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-20 22:14 [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC Sean V Kelley
2020-04-20 22:14 ` [PATCH v6 1/2] pciutils: Decode available DVSEC details Sean V Kelley
2020-04-20 22:14 ` [PATCH v6 2/2] pciutils: Decode Compute eXpress Link DVSEC Sean V Kelley
2020-05-04 16:20 ` [PATCH v6 0/2] pciutils: Add basic decode support for CXL DVSEC Sean V Kelley

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