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Message-ID: <20230419170427.1108-9-shannon.nelson@amd.com>
Date: Wed, 19 Apr 2023 10:04:21 -0700
From: Shannon Nelson <shannon.nelson@....com>
To: <shannon.nelson@....com>, <brett.creeley@....com>,
<davem@...emloft.net>, <netdev@...r.kernel.org>, <kuba@...nel.org>
CC: <drivers@...sando.io>, <leon@...nel.org>, <jiri@...nulli.us>,
<simon.horman@...igine.com>
Subject: [PATCH v11 net-next 08/14] 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 <shannon.nelson@....com>
Acked-by: Jakub Kicinski <kuba@...nel.org>
---
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 59daf8a67ac6..b2fca3b99f02 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 7eb02b359f3a..ac0480d7f0f1 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 b83e5016644b..8ec392299b7d 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 f0798ce01acf..b2be14ebadb6 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
/**
--
2.17.1
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