[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v5 18/24] x86: L2 CAT: implement get hw info flow.
This patch implements get HW info flow for L2 CAT including L2 CAT callback function. Signed-off-by: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx> --- xen/arch/x86/psr.c | 16 ++++++++++++++++ xen/arch/x86/sysctl.c | 15 +++++++++++++++ xen/include/asm-x86/psr.h | 1 + xen/include/public/sysctl.h | 6 ++++++ 4 files changed, 38 insertions(+) diff --git a/xen/arch/x86/psr.c b/xen/arch/x86/psr.c index 5320ae6..b630c48 100644 --- a/xen/arch/x86/psr.c +++ b/xen/arch/x86/psr.c @@ -268,6 +268,9 @@ static enum psr_feat_type psr_cbm_type_to_feat_type(enum cbm_type type) case PSR_CBM_TYPE_L3_CODE: feat_type = PSR_SOCKET_L3_CDP; break; + case PSR_CBM_TYPE_L2: + feat_type = PSR_SOCKET_L2_CAT; + break; default: feat_type = 0xFFFF; break; @@ -715,8 +718,21 @@ static unsigned int l2_cat_get_cos_max(const struct feat_node *feat) return feat->info.l2_cat_info.cos_max; } +static bool l2_cat_get_feat_info(const struct feat_node *feat, + uint32_t data[], uint32_t array_len) +{ + if ( !data || 2 > array_len ) + return false; + + data[CBM_LEN] = feat->info.l2_cat_info.cbm_len; + data[COS_MAX] = feat->info.l2_cat_info.cos_max; + + return true; +} + struct feat_ops l2_cat_ops = { .get_cos_max = l2_cat_get_cos_max, + .get_feat_info = l2_cat_get_feat_info, }; static void __init parse_psr_bool(char *s, char *value, char *feature, diff --git a/xen/arch/x86/sysctl.c b/xen/arch/x86/sysctl.c index a4c8cfe..ae3600a 100644 --- a/xen/arch/x86/sysctl.c +++ b/xen/arch/x86/sysctl.c @@ -207,6 +207,21 @@ long arch_do_sysctl( ret = -EFAULT; break; } + case XEN_SYSCTL_PSR_CAT_get_l2_info: + { + uint32_t dat[2]; + ret = psr_get_info(sysctl->u.psr_cat_op.target, + PSR_CBM_TYPE_L2, dat, 2); + if ( ret ) + break; + + sysctl->u.psr_cat_op.u.l2_info.cbm_len = dat[CBM_LEN]; + sysctl->u.psr_cat_op.u.l2_info.cos_max = dat[COS_MAX]; + + if ( !ret && __copy_field_to_guest(u_sysctl, sysctl, u.psr_cat_op) ) + ret = -EFAULT; + break; + } default: ret = -EOPNOTSUPP; break; diff --git a/xen/include/asm-x86/psr.h b/xen/include/asm-x86/psr.h index d2c7a13..31aa332 100644 --- a/xen/include/asm-x86/psr.h +++ b/xen/include/asm-x86/psr.h @@ -56,6 +56,7 @@ enum cbm_type { PSR_CBM_TYPE_L3, PSR_CBM_TYPE_L3_CODE, PSR_CBM_TYPE_L3_DATA, + PSR_CBM_TYPE_L2, }; extern struct psr_cmt *psr_cmt; diff --git a/xen/include/public/sysctl.h b/xen/include/public/sysctl.h index 00f5e77..cbf5372 100644 --- a/xen/include/public/sysctl.h +++ b/xen/include/public/sysctl.h @@ -744,6 +744,7 @@ typedef struct xen_sysctl_pcitopoinfo xen_sysctl_pcitopoinfo_t; DEFINE_XEN_GUEST_HANDLE(xen_sysctl_pcitopoinfo_t); #define XEN_SYSCTL_PSR_CAT_get_l3_info 0 +#define XEN_SYSCTL_PSR_CAT_get_l2_info 1 struct xen_sysctl_psr_cat_op { uint32_t cmd; /* IN: XEN_SYSCTL_PSR_CAT_* */ uint32_t target; /* IN */ @@ -754,6 +755,11 @@ struct xen_sysctl_psr_cat_op { #define XEN_SYSCTL_PSR_CAT_L3_CDP (1u << 0) uint32_t flags; /* OUT: CAT flags */ } l3_info; + + struct { + uint32_t cbm_len; /* OUT: CBM length */ + uint32_t cos_max; /* OUT: Maximum COS */ + } l2_info; } u; }; typedef struct xen_sysctl_psr_cat_op xen_sysctl_psr_cat_op_t; -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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