Merge branch 'sparx5-PSFP-support'

Daniel Machon says:

====================
net: Add support for PSFP in Sparx5

================================================================================
Add support for Per-Stream Filtering and Policing (802.1Q-2018, 8.6.5.1).
================================================================================

The VCAP CLM (VCAP IS0 ingress classifier) classifies streams,
identified by ISDX (Ingress Service Index, frame metadata), and maps
ISDX to streams.

Flow meters are also classified by ISDX, and implemented using service
policers (Service Dual Leacky Buckets, SDLB). Leacky buckets are linked
together in a leak chain of a leak group. Leak groups a preconfigured to serve
buckets within a certain rate interval.

Stream gates are time-based policers used by PSFP. Frames are dropped
based on the gate state (OPEN/ CLOSE), whose state will be altered based
on the Gate Control List (GCL) and current PTP time. Apart from
time-based policing, stream gates can alter egress queue selection for
the frames that pass through the Gate. This is done through Internal
Priority Selector (IPS). Stream gates are mapped from stream filters.

Support for tc actions gate and police, have been added to the VCAP IS0 set of
supported actions.

Examples:

// tc filter with gate action
$ tc filter add dev eth1 ingress chain 1100000 prio 1 handle 1001 protocol \
802.1q flower skip_sw vlan_id 100 action gate base-time 0 sched-entry open \
700000 7 8m sched-entry close 300000 action goto chain 1200000

// tc filter with police action
$ tc filter add dev eth1 ingress chain 1100000 prio 1 handle 1002 protocol \
802.1q flower skip_sw vlan_id 100 action police rate 1gbit burst 8096      \
conform-exceed drop action goto chain 1200000

================================================================================
Patches
================================================================================
Patch android-rpi#1:  Adds new register needed for PSFP.
Patch android-rpi#2:  Adds resource pools to control PSFP needed chip resources.
Patch android-rpi#3:  Adds support for SDLB's needed for flow-meters.
Patch #4:  Adds support for service policers.
Patch #5:  Adds support for PSFP flow-meters, using service policers.
Patch #6:  Adds a new function to calculate basetime, required by flow-meters.
Patch #7:  Adds support for PSFP stream gates.
Patch #8:  Adds support for PSFP stream filters.
Patch #9:  Adds a function to initialize flow-meters, stream gates and stream
           filters.
Patch #10: Adds the required flower code to configure PSFP using the tc command.
====================

Signed-off-by: David S. Miller <[email protected]>

drivers/net/ethernet/microchip/sparx5/Makefile

@@ -9,7 +9,8 @@ sparx5-switch-y  := sparx5_main.o sparx5_packet.o \
  sparx5_netdev.o sparx5_phylink.o sparx5_port.o sparx5_mactable.o sparx5_vlan.o \
  sparx5_switchdev.o sparx5_calendar.o sparx5_ethtool.o sparx5_fdma.o \
  sparx5_ptp.o sparx5_pgid.o sparx5_tc.o sparx5_qos.o \
- sparx5_vcap_impl.o sparx5_vcap_ag_api.o sparx5_tc_flower.o sparx5_tc_matchall.o
+ sparx5_vcap_impl.o sparx5_vcap_ag_api.o sparx5_tc_flower.o \
+ sparx5_tc_matchall.o sparx5_pool.o sparx5_sdlb.o sparx5_police.o sparx5_psfp.o
 
 sparx5-switch-$(CONFIG_SPARX5_DCB) += sparx5_dcb.o
 sparx5-switch-$(CONFIG_DEBUG_FS) += sparx5_vcap_debugfs.o

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

@@ -205,6 +205,7 @@ static const struct sparx5_main_io_resource sparx5_main_iomap[] =  {
 	{ TARGET_EACL,               0x112c0000, 2 }, /* 0x6112c0000 */
 	{ TARGET_ANA_CL,             0x11400000, 2 }, /* 0x611400000 */
 	{ TARGET_ANA_L3,             0x11480000, 2 }, /* 0x611480000 */
+	{ TARGET_ANA_AC_SDLB,        0x11500000, 2 }, /* 0x611500000 */
 	{ TARGET_HSCH,               0x11580000, 2 }, /* 0x611580000 */
 	{ TARGET_REW,                0x11600000, 2 }, /* 0x611600000 */
 	{ TARGET_ANA_L2,             0x11800000, 2 }, /* 0x611800000 */
@@ -501,8 +502,8 @@ static int sparx5_init_coreclock(struct sparx5 *sparx5)
 
 	clk_period = sparx5_clk_period(freq);
 
-	spx5_rmw(HSCH_SYS_CLK_PER_SYS_CLK_PER_100PS_SET(clk_period / 100),
-		 HSCH_SYS_CLK_PER_SYS_CLK_PER_100PS,
+	spx5_rmw(HSCH_SYS_CLK_PER_100PS_SET(clk_period / 100),
+		 HSCH_SYS_CLK_PER_100PS,
 		 sparx5,
 		 HSCH_SYS_CLK_PER);
 

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

@@ -396,6 +396,7 @@ int sparx5_ptp_txtstamp_request(struct sparx5_port *port,
 void sparx5_ptp_txtstamp_release(struct sparx5_port *port,
 				 struct sk_buff *skb);
 irqreturn_t sparx5_ptp_irq_handler(int irq, void *args);
+int sparx5_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts);
 
 /* sparx5_vcap_impl.c */
 int sparx5_vcap_init(struct sparx5 *sparx5);
@@ -413,6 +414,129 @@ int sparx5_pgid_alloc_glag(struct sparx5 *spx5, u16 *idx);
 int sparx5_pgid_alloc_mcast(struct sparx5 *spx5, u16 *idx);
 int sparx5_pgid_free(struct sparx5 *spx5, u16 idx);
 
+/* sparx5_pool.c */
+struct sparx5_pool_entry {
+	u16 ref_cnt;
+	u32 idx; /* tc index */
+};
+
+u32 sparx5_pool_idx_to_id(u32 idx);
+int sparx5_pool_put(struct sparx5_pool_entry *pool, int size, u32 id);
+int sparx5_pool_get(struct sparx5_pool_entry *pool, int size, u32 *id);
+int sparx5_pool_get_with_idx(struct sparx5_pool_entry *pool, int size, u32 idx,
+			     u32 *id);
+
+/* sparx5_sdlb.c */
+#define SPX5_SDLB_PUP_TOKEN_DISABLE 0x1FFF
+#define SPX5_SDLB_PUP_TOKEN_MAX (SPX5_SDLB_PUP_TOKEN_DISABLE - 1)
+#define SPX5_SDLB_GROUP_RATE_MAX 25000000000ULL
+#define SPX5_SDLB_2CYCLES_TYPE2_THRES_OFFSET 13
+#define SPX5_SDLB_CNT 4096
+#define SPX5_SDLB_GROUP_CNT 10
+#define SPX5_CLK_PER_100PS_DEFAULT 16
+
+struct sparx5_sdlb_group {
+	u64 max_rate;
+	u32 min_burst;
+	u32 frame_size;
+	u32 pup_interval;
+	u32 nsets;
+};
+
+extern struct sparx5_sdlb_group sdlb_groups[SPX5_SDLB_GROUP_CNT];
+int sparx5_sdlb_pup_token_get(struct sparx5 *sparx5, u32 pup_interval,
+			      u64 rate);
+
+int sparx5_sdlb_clk_hz_get(struct sparx5 *sparx5);
+int sparx5_sdlb_group_get_by_rate(struct sparx5 *sparx5, u32 rate, u32 burst);
+int sparx5_sdlb_group_get_by_index(struct sparx5 *sparx5, u32 idx, u32 *group);
+
+int sparx5_sdlb_group_add(struct sparx5 *sparx5, u32 group, u32 idx);
+int sparx5_sdlb_group_del(struct sparx5 *sparx5, u32 group, u32 idx);
+
+void sparx5_sdlb_group_init(struct sparx5 *sparx5, u64 max_rate, u32 min_burst,
+			    u32 frame_size, u32 idx);
+
+/* sparx5_police.c */
+enum {
+	/* More policer types will be added later */
+	SPX5_POL_SERVICE
+};
+
+struct sparx5_policer {
+	u32 type;
+	u32 idx;
+	u64 rate;
+	u32 burst;
+	u32 group;
+	u8 event_mask;
+};
+
+int sparx5_policer_conf_set(struct sparx5 *sparx5, struct sparx5_policer *pol);
+
+/* sparx5_psfp.c */
+#define SPX5_PSFP_GCE_CNT 4
+#define SPX5_PSFP_SG_CNT 1024
+#define SPX5_PSFP_SG_MIN_CYCLE_TIME_NS (1 * NSEC_PER_USEC)
+#define SPX5_PSFP_SG_MAX_CYCLE_TIME_NS ((1 * NSEC_PER_SEC) - 1)
+#define SPX5_PSFP_SG_MAX_IPV (SPX5_PRIOS - 1)
+#define SPX5_PSFP_SG_OPEN (SPX5_PSFP_SG_CNT - 1)
+#define SPX5_PSFP_SG_CYCLE_TIME_DEFAULT 1000000
+#define SPX5_PSFP_SF_MAX_SDU 16383
+
+struct sparx5_psfp_fm {
+	struct sparx5_policer pol;
+};
+
+struct sparx5_psfp_gce {
+	bool gate_state;            /* StreamGateState */
+	u32 interval;               /* TimeInterval */
+	u32 ipv;                    /* InternalPriorityValue */
+	u32 maxoctets;              /* IntervalOctetMax */
+};
+
+struct sparx5_psfp_sg {
+	bool gate_state;            /* PSFPAdminGateStates */
+	bool gate_enabled;          /* PSFPGateEnabled */
+	u32 ipv;                    /* PSFPAdminIPV */
+	struct timespec64 basetime; /* PSFPAdminBaseTime */
+	u32 cycletime;              /* PSFPAdminCycleTime */
+	u32 cycletimeext;           /* PSFPAdminCycleTimeExtension */
+	u32 num_entries;            /* PSFPAdminControlListLength */
+	struct sparx5_psfp_gce gce[SPX5_PSFP_GCE_CNT];
+};
+
+struct sparx5_psfp_sf {
+	bool sblock_osize_ena;
+	bool sblock_osize;
+	u32 max_sdu;
+	u32 sgid; /* Gate id */
+	u32 fmid; /* Flow meter id */
+};
+
+int sparx5_psfp_fm_add(struct sparx5 *sparx5, u32 uidx,
+		       struct sparx5_psfp_fm *fm, u32 *id);
+int sparx5_psfp_fm_del(struct sparx5 *sparx5, u32 id);
+
+int sparx5_psfp_sg_add(struct sparx5 *sparx5, u32 uidx,
+		       struct sparx5_psfp_sg *sg, u32 *id);
+int sparx5_psfp_sg_del(struct sparx5 *sparx5, u32 id);
+
+int sparx5_psfp_sf_add(struct sparx5 *sparx5, const struct sparx5_psfp_sf *sf,
+		       u32 *id);
+int sparx5_psfp_sf_del(struct sparx5 *sparx5, u32 id);
+
+u32 sparx5_psfp_isdx_get_sf(struct sparx5 *sparx5, u32 isdx);
+u32 sparx5_psfp_isdx_get_fm(struct sparx5 *sparx5, u32 isdx);
+u32 sparx5_psfp_sf_get_sg(struct sparx5 *sparx5, u32 sfid);
+void sparx5_isdx_conf_set(struct sparx5 *sparx5, u32 isdx, u32 sfid, u32 fmid);
+
+void sparx5_psfp_init(struct sparx5 *sparx5);
+
+/* sparx5_qos.c */
+void sparx5_new_base_time(struct sparx5 *sparx5, const u32 cycle_time,
+			  const ktime_t org_base_time, ktime_t *new_base_time);
+
 /* Clock period in picoseconds */
 static inline u32 sparx5_clk_period(enum sparx5_core_clockfreq cclock)
 {