Arm defined a set of SMC calls for accessing PCIe config space in The Arm PCI Configuration Space Access Firmware Interface: https://developer.arm.com/documentation/den0115/latest Add the definitions. Signed-off-by: Jeremy Linton <jeremy.linton@xxxxxxx> --- include/linux/arm-smccc.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 220c8c60e021..1071a997ba98 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -182,6 +182,35 @@ ARM_SMCCC_OWNER_STANDARD, \ 0x53) +/* PCI ECAM conduit (defined by ARM DEN0115A) */ +#define SMCCC_PCI_VERSION \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, 0x0130) + +#define SMCCC_PCI_FEATURES \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, 0x0131) + +#define SMCCC_PCI_READ \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, 0x0132) + +#define SMCCC_PCI_WRITE \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, 0x0133) + +#define SMCCC_PCI_SEG_INFO \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + ARM_SMCCC_OWNER_STANDARD, 0x0134) + +#define SMCCC_PCI_SEG_INFO_START_BUS GENMASK(7, 0) +#define SMCCC_PCI_SEG_INFO_END_BUS GENMASK(15, 8) + /* * Return codes defined in ARM DEN 0070A * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C -- 2.37.1
