diff options
| -rw-r--r-- | hw/cxl/cxl-component-utils.c | 34 | ||||
| -rw-r--r-- | include/hw/cxl/cxl_component.h | 8 |
2 files changed, 42 insertions, 0 deletions
diff --git a/hw/cxl/cxl-component-utils.c b/hw/cxl/cxl-component-utils.c index afc97b1..69cb071 100644 --- a/hw/cxl/cxl-component-utils.c +++ b/hw/cxl/cxl-component-utils.c @@ -9,6 +9,7 @@ #include "qemu/osdep.h" #include "qemu/log.h" +#include "qapi/error.h" #include "hw/pci/pci.h" #include "hw/cxl/cxl.h" @@ -329,3 +330,36 @@ void cxl_component_create_dvsec(CXLComponentState *cxl, range_init_nofail(&cxl->dvsecs[type], cxl->dvsec_offset, length); cxl->dvsec_offset += length; } + +uint8_t cxl_interleave_ways_enc(int iw, Error **errp) +{ + switch (iw) { + case 1: return 0x0; + case 2: return 0x1; + case 4: return 0x2; + case 8: return 0x3; + case 16: return 0x4; + case 3: return 0x8; + case 6: return 0x9; + case 12: return 0xa; + default: + error_setg(errp, "Interleave ways: %d not supported", iw); + return 0; + } +} + +uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp) +{ + switch (gran) { + case 256: return 0; + case 512: return 1; + case 1024: return 2; + case 2048: return 3; + case 4096: return 4; + case 8192: return 5; + case 16384: return 6; + default: + error_setg(errp, "Interleave granularity: %" PRIu64 " invalid", gran); + return 0; + } +} diff --git a/include/hw/cxl/cxl_component.h b/include/hw/cxl/cxl_component.h index 7d8f395..4f69688 100644 --- a/include/hw/cxl/cxl_component.h +++ b/include/hw/cxl/cxl_component.h @@ -210,4 +210,12 @@ static inline int cxl_decoder_count_enc(int count) return 0; } +uint8_t cxl_interleave_ways_enc(int iw, Error **errp); +uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp); + +static inline hwaddr cxl_decode_ig(int ig) +{ + return 1 << (ig + 8); +} + #endif |