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[pciutils,v2,2/2] lspci: Add TEE-IO extended capability bit

Message ID 20240226060135.3252162-3-aik@amd.com
State New
Headers show
Series lspci: Adding TDISP, IDE | expand

Commit Message

Alexey Kardashevskiy Feb. 26, 2024, 6:01 a.m. UTC 
PCIe r6.1, sec 7.5.3.3 defines "TEE-IO Supported" in the PCI Express Device
Capabilities Register which indicates that the function implements
the TEE-IO functionality as described by the TEE Device Interface Security
Protocol (TDISP, PCIe r6.1, chapter 11).

tests/cap-ide is an example of such device.

Signed-off-by: Alexey Kardashevskiy <aik@amd.com>
---
Changes:
v2:
* added the section number to the commit log
---
 lib/header.h | 1 +
 ls-caps.c    | 1 +
 2 files changed, 2 insertions(+)
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Patch

diff --git a/lib/header.h b/lib/header.h
index 68cb3c1..0b0ed9a 100644
--- a/lib/header.h
+++ b/lib/header.h
@@ -777,6 +777,7 @@ 
 #define  PCI_EXP_DEVCAP_PWR_VAL	0x3fc0000 /* Slot Power Limit Value */
 #define  PCI_EXP_DEVCAP_PWR_SCL	0xc000000 /* Slot Power Limit Scale */
 #define  PCI_EXP_DEVCAP_FLRESET	0x10000000 /* Function-Level Reset */
+#define  PCI_EXP_DEVCAP_TEE_IO  0x40000000 /* TEE-IO Supported (TDISP) */
 #define PCI_EXP_DEVCTL		0x8	/* Device Control */
 #define  PCI_EXP_DEVCTL_CERE	0x0001	/* Correctable Error Reporting En. */
 #define  PCI_EXP_DEVCTL_NFERE	0x0002	/* Non-Fatal Error Reporting Enable */
diff --git a/ls-caps.c b/ls-caps.c
index 2c99812..65e92e6 100644
--- a/ls-caps.c
+++ b/ls-caps.c
@@ -717,6 +717,7 @@  static void cap_express_dev(struct device *d, int where, int type)
       printf(" SlotPowerLimit ");
       show_power_limit((t & PCI_EXP_DEVCAP_PWR_VAL) >> 18, (t & PCI_EXP_DEVCAP_PWR_SCL) >> 26);
     }
+  printf(" TEE-IO%c", FLAG(t, PCI_EXP_DEVCAP_TEE_IO));
   printf("\n");
 
   w = get_conf_word(d, where + PCI_EXP_DEVCTL);