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PCI: Fix PCIe capability sizes

PCI_CAP_EXP_ENDPOINT_SIZEOF_V1 defines the size of the PCIe capability structure for v1 devices with link, but we also have a need in the vfio code for sizing the capability for devices without link, such as Root Complex Integrated Endpoints. Create a separate define for this ending the structure before the link fields. Additionally, this reveals that PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 is currently incorrect, ending the capability length before the v2 link fields. Rename this to specify an RC Integrated Endpoint (no link) capability length and move PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 to include the link fields as we have for the v1 version.

Alex Williamson committed 9 years ago

Commit ea5311c1 parent b63773a1 file · +4 −2Browse files

Showing the changes to include/uapi/linux (1 of 1 file). Show all

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include/uapi/linux/pci_regs.h+4−2
@@ -513,6 +513,7 @@ · 512 unmodified lines
513#define PCI_EXP_DEVSTA_URD 0x0008 /* Unsupported Request Detected */513#define PCI_EXP_DEVSTA_URD 0x0008 /* Unsupported Request Detected */
514#define PCI_EXP_DEVSTA_AUXPD 0x0010 /* AUX Power Detected */514#define PCI_EXP_DEVSTA_AUXPD 0x0010 /* AUX Power Detected */
515#define PCI_EXP_DEVSTA_TRPND 0x0020 /* Transactions Pending */515#define PCI_EXP_DEVSTA_TRPND 0x0020 /* Transactions Pending */
516#define PCI_CAP_EXP_RC_ENDPOINT_SIZEOF_V1 12 /* v1 endpoints without link end here */
516#define PCI_EXP_LNKCAP 12 /* Link Capabilities */517#define PCI_EXP_LNKCAP 12 /* Link Capabilities */
517#define PCI_EXP_LNKCAP_SLS 0x0000000f /* Supported Link Speeds */518#define PCI_EXP_LNKCAP_SLS 0x0000000f /* Supported Link Speeds */
518#define PCI_EXP_LNKCAP_SLS_2_5GB 0x00000001 /* LNKCAP2 SLS Vector bit 0 */519#define PCI_EXP_LNKCAP_SLS_2_5GB 0x00000001 /* LNKCAP2 SLS Vector bit 0 */
@@ -556,7 +557,7 @@ · 37 unmodified lines
556#define PCI_EXP_LNKSTA_DLLLA 0x2000 /* Data Link Layer Link Active */557#define PCI_EXP_LNKSTA_DLLLA 0x2000 /* Data Link Layer Link Active */
557#define PCI_EXP_LNKSTA_LBMS 0x4000 /* Link Bandwidth Management Status */558#define PCI_EXP_LNKSTA_LBMS 0x4000 /* Link Bandwidth Management Status */
558#define PCI_EXP_LNKSTA_LABS 0x8000 /* Link Autonomous Bandwidth Status */559#define PCI_EXP_LNKSTA_LABS 0x8000 /* Link Autonomous Bandwidth Status */
559#define PCI_CAP_EXP_ENDPOINT_SIZEOF_V1 20 /* v1 endpoints end here */560#define PCI_CAP_EXP_ENDPOINT_SIZEOF_V1 20 /* v1 endpoints with link end here */
560#define PCI_EXP_SLTCAP 20 /* Slot Capabilities */561#define PCI_EXP_SLTCAP 20 /* Slot Capabilities */
561#define PCI_EXP_SLTCAP_ABP 0x00000001 /* Attention Button Present */562#define PCI_EXP_SLTCAP_ABP 0x00000001 /* Attention Button Present */
562#define PCI_EXP_SLTCAP_PCP 0x00000002 /* Power Controller Present */563#define PCI_EXP_SLTCAP_PCP 0x00000002 /* Power Controller Present */
@@ -639,7 +640,7 @@ · 76 unmodified lines
639#define PCI_EXP_DEVCTL2_OBFF_MSGB_EN 0x4000 /* Enable OBFF Message type B */640#define PCI_EXP_DEVCTL2_OBFF_MSGB_EN 0x4000 /* Enable OBFF Message type B */
640#define PCI_EXP_DEVCTL2_OBFF_WAKE_EN 0x6000 /* OBFF using WAKE# signaling */641#define PCI_EXP_DEVCTL2_OBFF_WAKE_EN 0x6000 /* OBFF using WAKE# signaling */
641#define PCI_EXP_DEVSTA2 42 /* Device Status 2 */642#define PCI_EXP_DEVSTA2 42 /* Device Status 2 */
642#define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 44 /* v2 endpoints end here */643#define PCI_CAP_EXP_RC_ENDPOINT_SIZEOF_V2 44 /* v2 endpoints without link end here */
643#define PCI_EXP_LNKCAP2 44 /* Link Capabilities 2 */644#define PCI_EXP_LNKCAP2 44 /* Link Capabilities 2 */
644#define PCI_EXP_LNKCAP2_SLS_2_5GB 0x00000002 /* Supported Speed 2.5GT/s */645#define PCI_EXP_LNKCAP2_SLS_2_5GB 0x00000002 /* Supported Speed 2.5GT/s */
645#define PCI_EXP_LNKCAP2_SLS_5_0GB 0x00000004 /* Supported Speed 5.0GT/s */646#define PCI_EXP_LNKCAP2_SLS_5_0GB 0x00000004 /* Supported Speed 5.0GT/s */
@@ -647,6 +648,7 @@ · 1 unmodified line
647#define PCI_EXP_LNKCAP2_CROSSLINK 0x00000100 /* Crosslink supported */648#define PCI_EXP_LNKCAP2_CROSSLINK 0x00000100 /* Crosslink supported */
648#define PCI_EXP_LNKCTL2 48 /* Link Control 2 */649#define PCI_EXP_LNKCTL2 48 /* Link Control 2 */
649#define PCI_EXP_LNKSTA2 50 /* Link Status 2 */650#define PCI_EXP_LNKSTA2 50 /* Link Status 2 */
651#define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 52 /* v2 endpoints with link end here */
650#define PCI_EXP_SLTCAP2 52 /* Slot Capabilities 2 */652#define PCI_EXP_SLTCAP2 52 /* Slot Capabilities 2 */
651#define PCI_EXP_SLTCTL2 56 /* Slot Control 2 */653#define PCI_EXP_SLTCTL2 56 /* Slot Control 2 */
652#define PCI_EXP_SLTSTA2 58 /* Slot Status 2 */654#define PCI_EXP_SLTSTA2 58 /* Slot Status 2 */