From 65e0185ad764d2801811bb2e7c122e92557208c4 Mon Sep 17 00:00:00 2001 From: Shannon Nelson Date: Wed, 19 Apr 2023 10:04:21 -0700 Subject: [PATCH] pds_core: set up the VIF definitions and defaults The Virtual Interfaces (VIFs) supported by the DSC's configuration (vDPA, Eth, RDMA, etc) are reported in the dev_ident struct and made visible in debugfs. At this point only vDPA is supported in this driver so we only setup devices for that feature. Signed-off-by: Shannon Nelson Acked-by: Jakub Kicinski Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/pds_core/core.c | 48 +++++++++++++++++++++++++++++ drivers/net/ethernet/amd/pds_core/core.h | 11 +++++++ drivers/net/ethernet/amd/pds_core/debugfs.c | 24 +++++++++++++++ include/linux/pds/pds_common.h | 19 ++++++++++++ 4 files changed, 102 insertions(+) diff --git a/drivers/net/ethernet/amd/pds_core/core.c b/drivers/net/ethernet/amd/pds_core/core.c index 59daf8a..b2fca3b 100644 --- a/drivers/net/ethernet/amd/pds_core/core.c +++ b/drivers/net/ethernet/amd/pds_core/core.c @@ -346,6 +346,43 @@ static int pdsc_core_init(struct pdsc *pdsc) return err; } +static struct pdsc_viftype pdsc_viftype_defaults[] = { + [PDS_DEV_TYPE_VDPA] = { .name = PDS_DEV_TYPE_VDPA_STR, + .vif_id = PDS_DEV_TYPE_VDPA, + .dl_id = DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET }, + [PDS_DEV_TYPE_MAX] = {} +}; + +static int pdsc_viftypes_init(struct pdsc *pdsc) +{ + enum pds_core_vif_types vt; + + pdsc->viftype_status = kzalloc(sizeof(pdsc_viftype_defaults), + GFP_KERNEL); + if (!pdsc->viftype_status) + return -ENOMEM; + + for (vt = 0; vt < PDS_DEV_TYPE_MAX; vt++) { + bool vt_support; + + if (!pdsc_viftype_defaults[vt].name) + continue; + + /* Grab the defaults */ + pdsc->viftype_status[vt] = pdsc_viftype_defaults[vt]; + + /* See what the Core device has for support */ + vt_support = !!le16_to_cpu(pdsc->dev_ident.vif_types[vt]); + dev_dbg(pdsc->dev, "VIF %s is %ssupported\n", + pdsc->viftype_status[vt].name, + vt_support ? "" : "not "); + + pdsc->viftype_status[vt].supported = vt_support; + } + + return 0; +} + int pdsc_setup(struct pdsc *pdsc, bool init) { int numdescs; @@ -388,6 +425,14 @@ int pdsc_setup(struct pdsc *pdsc, bool init) if (err) goto err_out_teardown; + /* Set up the VIFs */ + err = pdsc_viftypes_init(pdsc); + if (err) + goto err_out_teardown; + + if (init) + pdsc_debugfs_add_viftype(pdsc); + clear_bit(PDSC_S_FW_DEAD, &pdsc->state); return 0; @@ -404,6 +449,9 @@ void pdsc_teardown(struct pdsc *pdsc, bool removing) pdsc_qcq_free(pdsc, &pdsc->notifyqcq); pdsc_qcq_free(pdsc, &pdsc->adminqcq); + kfree(pdsc->viftype_status); + pdsc->viftype_status = NULL; + if (pdsc->intr_info) { for (i = 0; i < pdsc->nintrs; i++) pdsc_intr_free(pdsc, i); diff --git a/drivers/net/ethernet/amd/pds_core/core.h b/drivers/net/ethernet/amd/pds_core/core.h index 7eb02b3..ac0480d 100644 --- a/drivers/net/ethernet/amd/pds_core/core.h +++ b/drivers/net/ethernet/amd/pds_core/core.h @@ -123,6 +123,15 @@ struct pdsc_qcq { struct dentry *dentry; }; +struct pdsc_viftype { + char *name; + bool supported; + bool enabled; + int dl_id; + int vif_id; + struct pds_auxiliary_dev *padev; +}; + /* No state flags set means we are in a steady running state */ enum pdsc_state_flags { PDSC_S_FW_DEAD, /* stopped, wait on startup or recovery */ @@ -174,6 +183,7 @@ struct pdsc { struct pdsc_qcq adminqcq; struct pdsc_qcq notifyqcq; u64 last_eid; + struct pdsc_viftype *viftype_status; }; /** enum pds_core_dbell_bits - bitwise composition of dbell values. @@ -237,6 +247,7 @@ void pdsc_debugfs_destroy(void); void pdsc_debugfs_add_dev(struct pdsc *pdsc); void pdsc_debugfs_del_dev(struct pdsc *pdsc); void pdsc_debugfs_add_ident(struct pdsc *pdsc); +void pdsc_debugfs_add_viftype(struct pdsc *pdsc); void pdsc_debugfs_add_irqs(struct pdsc *pdsc); void pdsc_debugfs_add_qcq(struct pdsc *pdsc, struct pdsc_qcq *qcq); void pdsc_debugfs_del_qcq(struct pdsc_qcq *qcq); diff --git a/drivers/net/ethernet/amd/pds_core/debugfs.c b/drivers/net/ethernet/amd/pds_core/debugfs.c index b83e501..8ec3922 100644 --- a/drivers/net/ethernet/amd/pds_core/debugfs.c +++ b/drivers/net/ethernet/amd/pds_core/debugfs.c @@ -68,6 +68,30 @@ void pdsc_debugfs_add_ident(struct pdsc *pdsc) pdsc, &identity_fops); } +static int viftype_show(struct seq_file *seq, void *v) +{ + struct pdsc *pdsc = seq->private; + int vt; + + for (vt = 0; vt < PDS_DEV_TYPE_MAX; vt++) { + if (!pdsc->viftype_status[vt].name) + continue; + + seq_printf(seq, "%s\t%d supported %d enabled\n", + pdsc->viftype_status[vt].name, + pdsc->viftype_status[vt].supported, + pdsc->viftype_status[vt].enabled); + } + return 0; +} +DEFINE_SHOW_ATTRIBUTE(viftype); + +void pdsc_debugfs_add_viftype(struct pdsc *pdsc) +{ + debugfs_create_file("viftypes", 0400, pdsc->dentry, + pdsc, &viftype_fops); +} + static const struct debugfs_reg32 intr_ctrl_regs[] = { { .name = "coal_init", .offset = 0, }, { .name = "mask", .offset = 4, }, diff --git a/include/linux/pds/pds_common.h b/include/linux/pds/pds_common.h index f0798ce..b2be14e 100644 --- a/include/linux/pds/pds_common.h +++ b/include/linux/pds/pds_common.h @@ -20,6 +20,25 @@ enum pds_core_driver_type { PDS_DRIVER_ESXI = 6, }; +enum pds_core_vif_types { + PDS_DEV_TYPE_CORE = 0, + PDS_DEV_TYPE_VDPA = 1, + PDS_DEV_TYPE_VFIO = 2, + PDS_DEV_TYPE_ETH = 3, + PDS_DEV_TYPE_RDMA = 4, + PDS_DEV_TYPE_LM = 5, + + /* new ones added before this line */ + PDS_DEV_TYPE_MAX = 16 /* don't change - used in struct size */ +}; + +#define PDS_DEV_TYPE_CORE_STR "Core" +#define PDS_DEV_TYPE_VDPA_STR "vDPA" +#define PDS_DEV_TYPE_VFIO_STR "VFio" +#define PDS_DEV_TYPE_ETH_STR "Eth" +#define PDS_DEV_TYPE_RDMA_STR "RDMA" +#define PDS_DEV_TYPE_LM_STR "LM" + #define PDS_CORE_IFNAMSIZ 16 /** -- 2.7.4