Merge branch 'net-lan969x-add-vcap-functionality'

Daniel Machon says:

====================
net: lan969x: add VCAP functionality

== Description:

This series is the third of a multi-part series, that prepares and adds
support for the new lan969x switch driver.

The upstreaming efforts is split into multiple series (might change a
bit as we go along):

        1) Prepare the Sparx5 driver for lan969x (merged)

        2) Add support for lan969x (same basic features as Sparx5
           provides excl. FDMA and VCAP, merged).

    --> 3) Add lan969x VCAP functionality.

        4) Add RGMII and FDMA functionality.

== VCAP support:

The Versatile Content-Aware Processor (VCAP) is a content-aware packet
processor that allows wirespeed packet inspection for rich
implementation of, for example, advanced VLAN and QoS classification and
manipulations, IP source guarding, longest prefix matching for Layer-3
routing, and security features for wireline and wireless applications.
This is all achieved by programming rules into the VCAP.

When a VCAP is enabled, every frame passing through the switch is
analyzed and multiple keys are created based on the contents of the
frame. The frame is examined to determine the frame type (for example,
IPv4 TCP frame), so that the frame information is extracted according to
the frame type, port-specific configuration, and classification results
from the basic classification. Keys are applied to the VCAP and when
there is a match between a key and a rule in the VCAP, the rule is then
applied to the frame from which the key was extracted.

After this series is applied, the lan969x driver will support the same
VCAP functionality as Sparx5.

== Patch breakdown:

Patch #1 exposes some VCAP symbols for lan969x.

Patch #2 replaces VCAP uses of SPX5_PORTS with n_ports from the match
data.

Patch #3 adds new VCAP constants to match data

Patch #4 removes the is_sparx5() check to now initialize the VCAP API on
lan969x.

Patch #5 adds the auto-generated VCAP data for lan969x.

Patch #6 adds the VCAP configuration data for lan969x.

Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
====================

Link: https://patch.msgid.link/20241101-sparx5-lan969x-switch-driver-3-v1-0-3c76f22f4bfa@microchip.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/microchip/lan969x/Makefile

@@ -5,7 +5,8 @@
 
 obj-$(CONFIG_LAN969X_SWITCH) += lan969x-switch.o
 
-lan969x-switch-y := lan969x_regs.o lan969x.o lan969x_calendar.o
+lan969x-switch-y := lan969x_regs.o lan969x.o lan969x_calendar.o \
+ lan969x_vcap_ag_api.o lan969x_vcap_impl.o
 
 # Provide include files
 ccflags-y += -I$(srctree)/drivers/net/ethernet/microchip/fdma

drivers/net/ethernet/microchip/lan969x/lan969x.c

@@ -319,6 +319,9 @@ static const struct sparx5_consts lan969x_consts = {
 	.qres_max_prio_idx   = 315,
 	.qres_max_colour_idx = 323,
 	.tod_pin             = 4,
+	.vcaps               = lan969x_vcaps,
+	.vcap_stats          = &lan969x_vcap_stats,
+	.vcaps_cfg           = lan969x_vcap_inst_cfg,
 };
 
 static const struct sparx5_ops lan969x_ops = {

drivers/net/ethernet/microchip/lan969x/lan969x.h

@@ -9,10 +9,18 @@
 
 #include "../sparx5/sparx5_main.h"
 #include "../sparx5/sparx5_regs.h"
+#include "../sparx5/sparx5_vcap_impl.h"
 
 /* lan969x.c */
 extern const struct sparx5_match_data lan969x_desc;
 
+/* lan969x_vcap_ag_api.c */
+extern const struct vcap_statistics lan969x_vcap_stats;
+extern const struct vcap_info lan969x_vcaps[];
+
+/* lan969x_vcap_impl.c */
+extern const struct sparx5_vcap_inst lan969x_vcap_inst_cfg[];
+
 /* lan969x_regs.c */
 extern const unsigned int lan969x_tsize[TSIZE_LAST];
 extern const unsigned int lan969x_raddr[RADDR_LAST];

drivers/net/ethernet/microchip/lan969x/lan969x_vcap_impl.c

@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "vcap_api.h"
+#include "lan969x.h"
+
+const struct sparx5_vcap_inst lan969x_vcap_inst_cfg[] = {
+	{
+		.vtype = VCAP_TYPE_IS0, /* CLM-0 */
+		.vinst = 0,
+		.map_id = 1,
+		.lookups = SPARX5_IS0_LOOKUPS,
+		.lookups_per_instance = SPARX5_IS0_LOOKUPS / 3,
+		.first_cid = SPARX5_VCAP_CID_IS0_L0,
+		.last_cid = SPARX5_VCAP_CID_IS0_L2 - 1,
+		.blockno = 2,
+		.blocks = 1,
+		.ingress = true,
+	},
+	{
+		.vtype = VCAP_TYPE_IS0, /* CLM-1 */
+		.vinst = 1,
+		.map_id = 2,
+		.lookups = SPARX5_IS0_LOOKUPS,
+		.lookups_per_instance = SPARX5_IS0_LOOKUPS / 3,
+		.first_cid = SPARX5_VCAP_CID_IS0_L2,
+		.last_cid = SPARX5_VCAP_CID_IS0_L4 - 1,
+		.blockno = 3,
+		.blocks = 1,
+		.ingress = true,
+	},
+	{
+		.vtype = VCAP_TYPE_IS0, /* CLM-2 */
+		.vinst = 2,
+		.map_id = 3,
+		.lookups = SPARX5_IS0_LOOKUPS,
+		.lookups_per_instance = SPARX5_IS0_LOOKUPS / 3,
+		.first_cid = SPARX5_VCAP_CID_IS0_L4,
+		.last_cid = SPARX5_VCAP_CID_IS0_MAX,
+		.blockno = 4,
+		.blocks = 1,
+		.ingress = true,
+	},
+	{
+		.vtype = VCAP_TYPE_IS2, /* IS2-0 */
+		.vinst = 0,
+		.map_id = 4,
+		.lookups = SPARX5_IS2_LOOKUPS,
+		.lookups_per_instance = SPARX5_IS2_LOOKUPS / 2,
+		.first_cid = SPARX5_VCAP_CID_IS2_L0,
+		.last_cid = SPARX5_VCAP_CID_IS2_L2 - 1,
+		.blockno = 0,
+		.blocks = 1,
+		.ingress = true,
+	},
+	{
+		.vtype = VCAP_TYPE_IS2, /* IS2-1 */
+		.vinst = 1,
+		.map_id = 5,
+		.lookups = SPARX5_IS2_LOOKUPS,
+		.lookups_per_instance = SPARX5_IS2_LOOKUPS / 2,
+		.first_cid = SPARX5_VCAP_CID_IS2_L2,
+		.last_cid = SPARX5_VCAP_CID_IS2_MAX,
+		.blockno = 1,
+		.blocks = 1,
+		.ingress = true,
+	},
+	{
+		.vtype = VCAP_TYPE_ES0,
+		.lookups = SPARX5_ES0_LOOKUPS,
+		.lookups_per_instance = SPARX5_ES0_LOOKUPS,
+		.first_cid = SPARX5_VCAP_CID_ES0_L0,
+		.last_cid = SPARX5_VCAP_CID_ES0_MAX,
+		.count = 1536,
+		.ingress = false,
+	},
+	{
+		.vtype = VCAP_TYPE_ES2,
+		.lookups = SPARX5_ES2_LOOKUPS,
+		.lookups_per_instance = SPARX5_ES2_LOOKUPS,
+		.first_cid = SPARX5_VCAP_CID_ES2_L0,
+		.last_cid = SPARX5_VCAP_CID_ES2_MAX,
+		.count = 1024,
+		.ingress = false,
+	},
+};

drivers/net/ethernet/microchip/sparx5/sparx5_main.c

@@ -30,6 +30,8 @@
 #include "sparx5_main.h"
 #include "sparx5_port.h"
 #include "sparx5_qos.h"
+#include "sparx5_vcap_ag_api.h"
+#include "sparx5_vcap_impl.h"
 
 const struct sparx5_regs *regs;
 
@@ -768,12 +770,10 @@ static int sparx5_start(struct sparx5 *sparx5)
 	if (err)
 		return err;
 
-	if (is_sparx5(sparx5)) {
-		err = sparx5_vcap_init(sparx5);
-		if (err) {
-			sparx5_unregister_notifier_blocks(sparx5);
-			return err;
-		}
+	err = sparx5_vcap_init(sparx5);
+	if (err) {
+		sparx5_unregister_notifier_blocks(sparx5);
+		return err;
 	}
 
 	/* Start Frame DMA with fallback to register based INJ/XTR */
@@ -1063,6 +1063,9 @@ static const struct sparx5_consts sparx5_consts = {
 	.qres_max_prio_idx   = 630,
 	.qres_max_colour_idx = 638,
 	.tod_pin             = 4,
+	.vcaps               = sparx5_vcaps,
+	.vcaps_cfg           = sparx5_vcap_inst_cfg,
+	.vcap_stats          = &sparx5_vcap_stats,
 };
 
 static const struct sparx5_ops sparx5_ops = {

drivers/net/ethernet/microchip/sparx5/sparx5_main.h

@@ -303,6 +303,9 @@ struct sparx5_consts {
 	u32 qres_max_prio_idx;   /* Maximum QRES prio index */
 	u32 qres_max_colour_idx; /* Maximum QRES colour index */
 	u32 tod_pin;             /* PTP TOD pin */
+	const struct sparx5_vcap_inst *vcaps_cfg;
+	const struct vcap_info *vcaps;
+	const struct vcap_statistics *vcap_stats;
 };
 
 struct sparx5_ops {

drivers/net/ethernet/microchip/sparx5/sparx5_vcap_ag_api.h

@@ -10,6 +10,8 @@
 #ifndef __SPARX5_VCAP_AG_API_H__
 #define __SPARX5_VCAP_AG_API_H__
 
+#include "vcap_api.h"
+
 /* VCAPs */
 extern const struct vcap_info sparx5_vcaps[];
 extern const struct vcap_statistics sparx5_vcap_stats;

drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c

@@ -17,7 +17,6 @@
 #define SUPER_VCAP_BLK_SIZE 3072 /* addresses per Super VCAP block */
 #define STREAMSIZE (64 * 4)  /* bytes in the VCAP cache area */
 
-#define SPARX5_IS2_LOOKUPS 4
 #define VCAP_IS2_KEYSEL(_ena, _noneth, _v4_mc, _v4_uc, _v6_mc, _v6_uc, _arp) \
 	(ANA_ACL_VCAP_S2_KEY_SEL_KEY_SEL_ENA_SET(_ena) | \
 	 ANA_ACL_VCAP_S2_KEY_SEL_NON_ETH_KEY_SEL_SET(_noneth) | \
@@ -27,7 +26,6 @@
 	 ANA_ACL_VCAP_S2_KEY_SEL_IP6_UC_KEY_SEL_SET(_v6_uc) | \
 	 ANA_ACL_VCAP_S2_KEY_SEL_ARP_KEY_SEL_SET(_arp))
 
-#define SPARX5_IS0_LOOKUPS 6
 #define VCAP_IS0_KEYSEL(_ena, _etype, _ipv4, _ipv6, _mpls_uc, _mpls_mc, _mlbs) \
 	(ANA_CL_ADV_CL_CFG_LOOKUP_ENA_SET(_ena) | \
 	ANA_CL_ADV_CL_CFG_ETYPE_CLM_KEY_SEL_SET(_etype) | \
@@ -37,31 +35,17 @@
 	ANA_CL_ADV_CL_CFG_MPLS_MC_CLM_KEY_SEL_SET(_mpls_mc) | \
 	ANA_CL_ADV_CL_CFG_MLBS_CLM_KEY_SEL_SET(_mlbs))
 
-#define SPARX5_ES0_LOOKUPS 1
 #define VCAP_ES0_KEYSEL(_key) (REW_RTAG_ETAG_CTRL_ES0_ISDX_KEY_ENA_SET(_key))
 #define SPARX5_STAT_ESDX_GRN_PKTS  0x300
 #define SPARX5_STAT_ESDX_YEL_PKTS  0x301
 
-#define SPARX5_ES2_LOOKUPS 2
 #define VCAP_ES2_KEYSEL(_ena, _arp, _ipv4, _ipv6) \
 	(EACL_VCAP_ES2_KEY_SEL_KEY_ENA_SET(_ena) | \
 	EACL_VCAP_ES2_KEY_SEL_ARP_KEY_SEL_SET(_arp) | \
 	EACL_VCAP_ES2_KEY_SEL_IP4_KEY_SEL_SET(_ipv4) | \
 	EACL_VCAP_ES2_KEY_SEL_IP6_KEY_SEL_SET(_ipv6))
 
-static struct sparx5_vcap_inst {
-	enum vcap_type vtype; /* type of vcap */
-	int vinst; /* instance number within the same type */
-	int lookups; /* number of lookups in this vcap type */
-	int lookups_per_instance; /* number of lookups in this instance */
-	int first_cid; /* first chain id in this vcap */
-	int last_cid; /* last chain id in this vcap */
-	int count; /* number of available addresses, not in super vcap */
-	int map_id; /* id in the super vcap block mapping (if applicable) */
-	int blockno; /* starting block in super vcap (if applicable) */
-	int blocks; /* number of blocks in super vcap (if applicable) */
-	bool ingress; /* is vcap in the ingress path */
-} sparx5_vcap_inst_cfg[] = {
+const struct sparx5_vcap_inst sparx5_vcap_inst_cfg[] = {
 	{
 		.vtype = VCAP_TYPE_IS0, /* CLM-0 */
 		.vinst = 0,
@@ -1793,6 +1777,7 @@ void sparx5_vcap_set_port_keyset(struct net_device *ndev,
 static void sparx5_vcap_is0_port_key_selection(struct sparx5 *sparx5,
 					       struct vcap_admin *admin)
 {
+	const struct sparx5_consts *consts = sparx5->data->consts;
 	int portno, lookup;
 	u32 keysel;
 
@@ -1804,7 +1789,7 @@ static void sparx5_vcap_is0_port_key_selection(struct sparx5 *sparx5,
 				 VCAP_IS0_PS_MPLS_FOLLOW_ETYPE,
 				 VCAP_IS0_PS_MLBS_FOLLOW_ETYPE);
 	for (lookup = 0; lookup < admin->lookups; ++lookup) {
-		for (portno = 0; portno < SPX5_PORTS; ++portno) {
+		for (portno = 0; portno < consts->n_ports; ++portno) {
 			spx5_wr(keysel, sparx5,
 				ANA_CL_ADV_CL_CFG(portno, lookup));
 			spx5_rmw(ANA_CL_ADV_CL_CFG_LOOKUP_ENA,
@@ -1819,6 +1804,7 @@ static void sparx5_vcap_is0_port_key_selection(struct sparx5 *sparx5,
 static void sparx5_vcap_is2_port_key_selection(struct sparx5 *sparx5,
 					       struct vcap_admin *admin)
 {
+	const struct sparx5_consts *consts = sparx5->data->consts;
 	int portno, lookup;
 	u32 keysel;
 
@@ -1829,13 +1815,13 @@ static void sparx5_vcap_is2_port_key_selection(struct sparx5 *sparx5,
 				 VCAP_IS2_PS_IPV6_UC_IP_7TUPLE,
 				 VCAP_IS2_PS_ARP_ARP);
 	for (lookup = 0; lookup < admin->lookups; ++lookup) {
-		for (portno = 0; portno < SPX5_PORTS; ++portno) {
+		for (portno = 0; portno < consts->n_ports; ++portno) {
 			spx5_wr(keysel, sparx5,
 				ANA_ACL_VCAP_S2_KEY_SEL(portno, lookup));
 		}
 	}
 	/* IS2 lookups are in bit 0:3 */
-	for (portno = 0; portno < SPX5_PORTS; ++portno)
+	for (portno = 0; portno < consts->n_ports; ++portno)
 		spx5_rmw(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0xf),
 			 ANA_ACL_VCAP_S2_CFG_SEC_ENA,
 			 sparx5,
@@ -1846,11 +1832,12 @@ static void sparx5_vcap_is2_port_key_selection(struct sparx5 *sparx5,
 static void sparx5_vcap_es0_port_key_selection(struct sparx5 *sparx5,
 					       struct vcap_admin *admin)
 {
+	const struct sparx5_consts *consts = sparx5->data->consts;
 	int portno;
 	u32 keysel;
 
 	keysel = VCAP_ES0_KEYSEL(VCAP_ES0_PS_FORCE_ISDX_LOOKUPS);
-	for (portno = 0; portno < SPX5_PORTS; ++portno)
+	for (portno = 0; portno < consts->n_ports; ++portno)
 		spx5_rmw(keysel, REW_RTAG_ETAG_CTRL_ES0_ISDX_KEY_ENA,
 			 sparx5, REW_RTAG_ETAG_CTRL(portno));
 
@@ -1862,6 +1849,7 @@ static void sparx5_vcap_es0_port_key_selection(struct sparx5 *sparx5,
 static void sparx5_vcap_es2_port_key_selection(struct sparx5 *sparx5,
 					       struct vcap_admin *admin)
 {
+	const struct sparx5_consts *consts = sparx5->data->consts;
 	int portno, lookup;
 	u32 keysel;
 
@@ -1869,7 +1857,7 @@ static void sparx5_vcap_es2_port_key_selection(struct sparx5 *sparx5,
 				 VCAP_ES2_PS_IPV4_IP4_TCP_UDP_OTHER,
 				 VCAP_ES2_PS_IPV6_IP_7TUPLE);
 	for (lookup = 0; lookup < admin->lookups; ++lookup)
-		for (portno = 0; portno < SPX5_PORTS; ++portno)
+		for (portno = 0; portno < consts->n_ports; ++portno)
 			spx5_wr(keysel, sparx5,
 				EACL_VCAP_ES2_KEY_SEL(portno, lookup));
 }
@@ -1901,19 +1889,20 @@ static void sparx5_vcap_port_key_selection(struct sparx5 *sparx5,
 static void sparx5_vcap_port_key_deselection(struct sparx5 *sparx5,
 					     struct vcap_admin *admin)
 {
+	const struct sparx5_consts *consts = sparx5->data->consts;
 	int portno, lookup;
 
 	switch (admin->vtype) {
 	case VCAP_TYPE_IS0:
 		for (lookup = 0; lookup < admin->lookups; ++lookup)
-			for (portno = 0; portno < SPX5_PORTS; ++portno)
+			for (portno = 0; portno < consts->n_ports; ++portno)
 				spx5_rmw(ANA_CL_ADV_CL_CFG_LOOKUP_ENA_SET(0),
 					 ANA_CL_ADV_CL_CFG_LOOKUP_ENA,
 					 sparx5,
 					 ANA_CL_ADV_CL_CFG(portno, lookup));
 		break;
 	case VCAP_TYPE_IS2:
-		for (portno = 0; portno < SPX5_PORTS; ++portno)
+		for (portno = 0; portno < consts->n_ports; ++portno)
 			spx5_rmw(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0),
 				 ANA_ACL_VCAP_S2_CFG_SEC_ENA,
 				 sparx5,
@@ -1925,7 +1914,7 @@ static void sparx5_vcap_port_key_deselection(struct sparx5 *sparx5,
 		break;
 	case VCAP_TYPE_ES2:
 		for (lookup = 0; lookup < admin->lookups; ++lookup)
-			for (portno = 0; portno < SPX5_PORTS; ++portno)
+			for (portno = 0; portno < consts->n_ports; ++portno)
 				spx5_rmw(EACL_VCAP_ES2_KEY_SEL_KEY_ENA_SET(0),
 					 EACL_VCAP_ES2_KEY_SEL_KEY_ENA,
 					 sparx5,
@@ -2042,6 +2031,7 @@ static void sparx5_vcap_block_alloc(struct sparx5 *sparx5,
 /* Allocate a vcap control and vcap instances and configure the system */
 int sparx5_vcap_init(struct sparx5 *sparx5)
 {
+	const struct sparx5_consts *consts = sparx5->data->consts;
 	const struct sparx5_vcap_inst *cfg;
 	struct vcap_control *ctrl;
 	struct vcap_admin *admin;
@@ -2063,14 +2053,14 @@ int sparx5_vcap_init(struct sparx5 *sparx5)
 
 	sparx5->vcap_ctrl = ctrl;
 	/* select the sparx5 VCAP model */
-	ctrl->vcaps = sparx5_vcaps;
-	ctrl->stats = &sparx5_vcap_stats;
+	ctrl->vcaps = consts->vcaps;
+	ctrl->stats = consts->vcap_stats;
 	/* Setup callbacks to allow the API to use the VCAP HW */
 	ctrl->ops = &sparx5_vcap_ops;
 
 	INIT_LIST_HEAD(&ctrl->list);
 	for (idx = 0; idx < ARRAY_SIZE(sparx5_vcap_inst_cfg); ++idx) {
-		cfg = &sparx5_vcap_inst_cfg[idx];
+		cfg = &consts->vcaps_cfg[idx];
 		admin = sparx5_vcap_admin_alloc(sparx5, ctrl, cfg);
 		if (IS_ERR(admin)) {
 			err = PTR_ERR(admin);
@@ -2085,7 +2075,7 @@ int sparx5_vcap_init(struct sparx5 *sparx5)
 		list_add_tail(&admin->list, &ctrl->list);
 	}
 	dir = vcap_debugfs(sparx5->dev, sparx5->debugfs_root, ctrl);
-	for (idx = 0; idx < SPX5_PORTS; ++idx)
+	for (idx = 0; idx < consts->n_ports; ++idx)
 		if (sparx5->ports[idx])
 			vcap_port_debugfs(sparx5->dev, dir, ctrl,
 					  sparx5->ports[idx]->ndev);

drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.h

@@ -16,6 +16,11 @@
 #include "vcap_api.h"
 #include "vcap_api_client.h"
 
+#define SPARX5_IS2_LOOKUPS 4
+#define SPARX5_IS0_LOOKUPS 6
+#define SPARX5_ES0_LOOKUPS 1
+#define SPARX5_ES2_LOOKUPS 2
+
 #define SPARX5_VCAP_CID_IS0_L0 VCAP_CID_INGRESS_L0 /* IS0/CLM lookup 0 */
 #define SPARX5_VCAP_CID_IS0_L1 VCAP_CID_INGRESS_L1 /* IS0/CLM lookup 1 */
 #define SPARX5_VCAP_CID_IS0_L2 VCAP_CID_INGRESS_L2 /* IS0/CLM lookup 2 */
@@ -40,6 +45,22 @@
 #define SPARX5_VCAP_CID_ES2_MAX \
 	(VCAP_CID_EGRESS_STAGE2_L1 + VCAP_CID_LOOKUP_SIZE - 1) /* ES2 Max */
 
+struct sparx5_vcap_inst {
+	enum vcap_type vtype; /* type of vcap */
+	int vinst; /* instance number within the same type */
+	int lookups; /* number of lookups in this vcap type */
+	int lookups_per_instance; /* number of lookups in this instance */
+	int first_cid; /* first chain id in this vcap */
+	int last_cid; /* last chain id in this vcap */
+	int count; /* number of available addresses, not in super vcap */
+	int map_id; /* id in the super vcap block mapping (if applicable) */
+	int blockno; /* starting block in super vcap (if applicable) */
+	int blocks; /* number of blocks in super vcap (if applicable) */
+	bool ingress; /* is vcap in the ingress path */
+};
+
+extern const struct sparx5_vcap_inst sparx5_vcap_inst_cfg[];
+
 /* IS0 port keyset selection control */
 
 /* IS0 ethernet, IPv4, IPv6 traffic type keyset generation */