diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/ipmi/kcs_bmc_aspeed.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c index cdc88cde1e9a..19c32bf50e0e 100644 --- a/drivers/char/ipmi/kcs_bmc_aspeed.c +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c @@ -207,17 +207,24 @@ static void aspeed_kcs_updateb(struct kcs_bmc_device *kcs_bmc, u32 reg, u8 mask, } /* - * AST_usrGuide_KCS.pdf - * 2. Background: - * we note D for Data, and C for Cmd/Status, default rules are - * A. KCS1 / KCS2 ( D / C:X / X+4 ) - * D / C : CA0h / CA4h - * D / C : CA8h / CACh - * B. KCS3 ( D / C:XX2h / XX3h ) - * D / C : CA2h / CA3h - * D / C : CB2h / CB3h - * C. KCS4 - * D / C : CA4h / CA5h + * We note D for Data, and C for Cmd/Status, default rules are + * + * 1. Only the D address is given: + * A. KCS1/KCS2 (D/C: X/X+4) + * D/C: CA0h/CA4h + * D/C: CA8h/CACh + * B. KCS3 (D/C: XX2/XX3h) + * D/C: CA2h/CA3h + * C. KCS4 (D/C: X/X+1) + * D/C: CA4h/CA5h + * + * 2. Both the D/C addresses are given: + * A. KCS1/KCS2/KCS4 (D/C: X/Y) + * D/C: CA0h/CA1h + * D/C: CA8h/CA9h + * D/C: CA4h/CA5h + * B. KCS3 (D/C: XX2/XX3h) + * D/C: CA2h/CA3h */ static int aspeed_kcs_set_address(struct kcs_bmc_device *kcs_bmc, u32 addrs[2], int nr_addrs) { |