[PATCH 10/14] perf/arm-cmn: Demarcate CMN-600 specifics

[Robin Murphy <robin.murphy@arm.com>]

In preparation for supporting newer CMN products, let's introduce a
means to differentiate the features and events which are specific to a
particular IP from those which remain common to the whole family. The
newer designs have also smoothed off some of the rough edges in terms
of discoverability, so separate out the parts of the flow which have
effectively now become CMN-600 quirks.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 drivers/perf/arm-cmn.c | 301 +++++++++++++++++++++--------------------
 1 file changed, 156 insertions(+), 145 deletions(-)

diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c
index d2dd02f040b8..ce94f923a607 100644
--- a/drivers/perf/arm-cmn.c
+++ b/drivers/perf/arm-cmn.c
@@ -151,7 +151,12 @@
 #define CMN_WP_DOWN			2
 
 
-/* r0px probably don't exist in silicon, thankfully */
+enum cmn_model {
+	CMN_ANY = -1,
+	CMN600 = 1,
+};
+
+/* CMN-600 r0px shouldn't exist in silicon, thankfully */
 enum cmn_revision {
 	CMN600_R1P0,
 	CMN600_R1P1,
@@ -159,6 +164,7 @@ enum cmn_revision {
 	CMN600_R1P3,
 	CMN600_R2P0,
 	CMN600_R3P0,
+	CMN600_R3P1,
 };
 
 enum cmn_node_type {
@@ -229,6 +235,7 @@ struct arm_cmn {
 	void __iomem *base;
 
 	enum cmn_revision rev;
+	enum cmn_model model;
 	u8 mesh_x;
 	u8 mesh_y;
 	u16 num_xps;
@@ -326,6 +333,7 @@ static unsigned int arm_cmn_get_index(u64 x[], unsigned int pos)
 
 struct arm_cmn_event_attr {
 	struct device_attribute attr;
+	enum cmn_model model;
 	enum cmn_node_type type;
 	u8 eventid;
 	u8 occupid;
@@ -337,9 +345,10 @@ struct arm_cmn_format_attr {
 	int config;
 };
 
-#define CMN_EVENT_ATTR(_name, _type, _eventid, _occupid)		\
+#define CMN_EVENT_ATTR(_model, _name, _type, _eventid, _occupid)	\
 	(&((struct arm_cmn_event_attr[]) {{				\
 		.attr = __ATTR(_name, 0444, arm_cmn_event_show, NULL),	\
+		.model = _model,					\
 		.type = _type,						\
 		.eventid = _eventid,					\
 		.occupid = _occupid,					\
@@ -386,12 +395,15 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
 	eattr = container_of(attr, typeof(*eattr), attr.attr);
 	type = eattr->type;
 
+	if (!(eattr->model & cmn->model))
+		return 0;
+
 	/* Watchpoints aren't nodes */
 	if (type == CMN_TYPE_WP)
 		type = CMN_TYPE_XP;
 
 	/* Revision-specific differences */
-	if (cmn->rev < CMN600_R1P2) {
+	if (cmn->model == CMN600 && cmn->rev < CMN600_R1P2) {
 		if (type == CMN_TYPE_HNF && eattr->eventid == 0x1b)
 			return 0;
 	}
@@ -402,25 +414,27 @@ static umode_t arm_cmn_event_attr_is_visible(struct kobject *kobj,
 	return attr->mode;
 }
 
-#define _CMN_EVENT_DVM(_name, _event, _occup)			\
-	CMN_EVENT_ATTR(dn_##_name, CMN_TYPE_DVM, _event, _occup)
+#define _CMN_EVENT_DVM(_model, _name, _event, _occup)		\
+	CMN_EVENT_ATTR(_model, dn_##_name, CMN_TYPE_DVM, _event, _occup)
 #define CMN_EVENT_DTC(_name)					\
-	CMN_EVENT_ATTR(dtc_##_name, CMN_TYPE_DTC, 0, 0)
-#define _CMN_EVENT_HNF(_name, _event, _occup)			\
-	CMN_EVENT_ATTR(hnf_##_name, CMN_TYPE_HNF, _event, _occup)
+	CMN_EVENT_ATTR(CMN_ANY, dtc_##_name, CMN_TYPE_DTC, 0, 0)
+#define _CMN_EVENT_HNF(_model, _name, _event, _occup)		\
+	CMN_EVENT_ATTR(_model, hnf_##_name, CMN_TYPE_HNF, _event, _occup)
 #define CMN_EVENT_HNI(_name, _event)				\
-	CMN_EVENT_ATTR(hni_##_name, CMN_TYPE_HNI, _event, 0)
+	CMN_EVENT_ATTR(CMN_ANY, hni_##_name, CMN_TYPE_HNI, _event, 0)
 #define __CMN_EVENT_XP(_name, _event)				\
-	CMN_EVENT_ATTR(mxp_##_name, CMN_TYPE_XP, _event, 0)
-#define CMN_EVENT_SBSX(_name, _event)				\
-	CMN_EVENT_ATTR(sbsx_##_name, CMN_TYPE_SBSX, _event, 0)
-#define CMN_EVENT_RNID(_name, _event)				\
-	CMN_EVENT_ATTR(rnid_##_name, CMN_TYPE_RNI, _event, 0)
+	CMN_EVENT_ATTR(CMN_ANY, mxp_##_name, CMN_TYPE_XP, _event, 0)
+#define CMN_EVENT_SBSX(_model, _name, _event)			\
+	CMN_EVENT_ATTR(_model, sbsx_##_name, CMN_TYPE_SBSX, _event, 0)
+#define CMN_EVENT_RNID(_model, _name, _event)			\
+	CMN_EVENT_ATTR(_model, rnid_##_name, CMN_TYPE_RNI, _event, 0)
+#define CMN_EVENT_MTSX(_name, _event)				\
+	CMN_EVENT_ATTR(CMN_ANY, mtsx_##_name, CMN_TYPE_MTSX, _event, 0)
 
-#define CMN_EVENT_DVM(_name, _event)				\
-	_CMN_EVENT_DVM(_name, _event, 0)
-#define CMN_EVENT_HNF(_name, _event)				\
-	_CMN_EVENT_HNF(_name, _event, 0)
+#define CMN_EVENT_DVM(_model, _name, _event)			\
+	_CMN_EVENT_DVM(_model, _name, _event, 0)
+#define CMN_EVENT_HNF(_model, _name, _event)			\
+	_CMN_EVENT_HNF(_model, _name, _event, 0)
 #define _CMN_EVENT_XP(_name, _event)				\
 	__CMN_EVENT_XP(e_##_name, (_event) | (0 << 2)),		\
 	__CMN_EVENT_XP(w_##_name, (_event) | (1 << 2)),		\
@@ -445,115 +459,115 @@ static struct attribute *arm_cmn_event_attrs[] = {
 	 * slot, but our lazy short-cut of using the DTM counter index for
 	 * the PMU index as well happens to avoid that by construction.
 	 */
-	CMN_EVENT_DVM(rxreq_dvmop,	0x01),
-	CMN_EVENT_DVM(rxreq_dvmsync,	0x02),
-	CMN_EVENT_DVM(rxreq_dvmop_vmid_filtered, 0x03),
-	CMN_EVENT_DVM(rxreq_retried,	0x04),
-	_CMN_EVENT_DVM(rxreq_trk_occupancy_all, 0x05, 0),
-	_CMN_EVENT_DVM(rxreq_trk_occupancy_dvmop, 0x05, 1),
-	_CMN_EVENT_DVM(rxreq_trk_occupancy_dvmsync, 0x05, 2),
+	CMN_EVENT_DVM(CMN600, rxreq_dvmop,		0x01),
+	CMN_EVENT_DVM(CMN600, rxreq_dvmsync,		0x02),
+	CMN_EVENT_DVM(CMN600, rxreq_dvmop_vmid_filtered, 0x03),
+	CMN_EVENT_DVM(CMN600, rxreq_retried,		0x04),
+	_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_all, 0x05, 0),
+	_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_dvmop, 0x05, 1),
+	_CMN_EVENT_DVM(CMN600, rxreq_trk_occupancy_dvmsync, 0x05, 2),
 
-	CMN_EVENT_HNF(cache_miss,	0x01),
-	CMN_EVENT_HNF(slc_sf_cache_access, 0x02),
-	CMN_EVENT_HNF(cache_fill,	0x03),
-	CMN_EVENT_HNF(pocq_retry,	0x04),
-	CMN_EVENT_HNF(pocq_reqs_recvd,	0x05),
-	CMN_EVENT_HNF(sf_hit,		0x06),
-	CMN_EVENT_HNF(sf_evictions,	0x07),
-	CMN_EVENT_HNF(dir_snoops_sent,	0x08),
-	CMN_EVENT_HNF(brd_snoops_sent,	0x09),
-	CMN_EVENT_HNF(slc_eviction,	0x0a),
-	CMN_EVENT_HNF(slc_fill_invalid_way, 0x0b),
-	CMN_EVENT_HNF(mc_retries,	0x0c),
-	CMN_EVENT_HNF(mc_reqs,		0x0d),
-	CMN_EVENT_HNF(qos_hh_retry,	0x0e),
-	_CMN_EVENT_HNF(qos_pocq_occupancy_all, 0x0f, 0),
-	_CMN_EVENT_HNF(qos_pocq_occupancy_read, 0x0f, 1),
-	_CMN_EVENT_HNF(qos_pocq_occupancy_write, 0x0f, 2),
-	_CMN_EVENT_HNF(qos_pocq_occupancy_atomic, 0x0f, 3),
-	_CMN_EVENT_HNF(qos_pocq_occupancy_stash, 0x0f, 4),
-	CMN_EVENT_HNF(pocq_addrhaz,	0x10),
-	CMN_EVENT_HNF(pocq_atomic_addrhaz, 0x11),
-	CMN_EVENT_HNF(ld_st_swp_adq_full, 0x12),
-	CMN_EVENT_HNF(cmp_adq_full,	0x13),
-	CMN_EVENT_HNF(txdat_stall,	0x14),
-	CMN_EVENT_HNF(txrsp_stall,	0x15),
-	CMN_EVENT_HNF(seq_full,		0x16),
-	CMN_EVENT_HNF(seq_hit,		0x17),
-	CMN_EVENT_HNF(snp_sent,		0x18),
-	CMN_EVENT_HNF(sfbi_dir_snp_sent, 0x19),
-	CMN_EVENT_HNF(sfbi_brd_snp_sent, 0x1a),
-	CMN_EVENT_HNF(snp_sent_untrk,	0x1b),
-	CMN_EVENT_HNF(intv_dirty,	0x1c),
-	CMN_EVENT_HNF(stash_snp_sent,	0x1d),
-	CMN_EVENT_HNF(stash_data_pull,	0x1e),
-	CMN_EVENT_HNF(snp_fwded,	0x1f),
+	CMN_EVENT_HNF(CMN_ANY, cache_miss,		0x01),
+	CMN_EVENT_HNF(CMN_ANY, slc_sf_cache_access,	0x02),
+	CMN_EVENT_HNF(CMN_ANY, cache_fill,		0x03),
+	CMN_EVENT_HNF(CMN_ANY, pocq_retry,		0x04),
+	CMN_EVENT_HNF(CMN_ANY, pocq_reqs_recvd,		0x05),
+	CMN_EVENT_HNF(CMN_ANY, sf_hit,			0x06),
+	CMN_EVENT_HNF(CMN_ANY, sf_evictions,		0x07),
+	CMN_EVENT_HNF(CMN_ANY, dir_snoops_sent,		0x08),
+	CMN_EVENT_HNF(CMN_ANY, brd_snoops_sent,		0x09),
+	CMN_EVENT_HNF(CMN_ANY, slc_eviction,		0x0a),
+	CMN_EVENT_HNF(CMN_ANY, slc_fill_invalid_way,	0x0b),
+	CMN_EVENT_HNF(CMN_ANY, mc_retries,		0x0c),
+	CMN_EVENT_HNF(CMN_ANY, mc_reqs,			0x0d),
+	CMN_EVENT_HNF(CMN_ANY, qos_hh_retry,		0x0e),
+	_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_all,	0x0f, 0),
+	_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_read, 0x0f, 1),
+	_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_write, 0x0f, 2),
+	_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_atomic, 0x0f, 3),
+	_CMN_EVENT_HNF(CMN_ANY, qos_pocq_occupancy_stash, 0x0f, 4),
+	CMN_EVENT_HNF(CMN_ANY, pocq_addrhaz,		0x10),
+	CMN_EVENT_HNF(CMN_ANY, pocq_atomic_addrhaz,	0x11),
+	CMN_EVENT_HNF(CMN_ANY, ld_st_swp_adq_full,	0x12),
+	CMN_EVENT_HNF(CMN_ANY, cmp_adq_full,		0x13),
+	CMN_EVENT_HNF(CMN_ANY, txdat_stall,		0x14),
+	CMN_EVENT_HNF(CMN_ANY, txrsp_stall,		0x15),
+	CMN_EVENT_HNF(CMN_ANY, seq_full,		0x16),
+	CMN_EVENT_HNF(CMN_ANY, seq_hit,			0x17),
+	CMN_EVENT_HNF(CMN_ANY, snp_sent,		0x18),
+	CMN_EVENT_HNF(CMN_ANY, sfbi_dir_snp_sent,	0x19),
+	CMN_EVENT_HNF(CMN_ANY, sfbi_brd_snp_sent,	0x1a),
+	CMN_EVENT_HNF(CMN_ANY, snp_sent_untrk,		0x1b),
+	CMN_EVENT_HNF(CMN_ANY, intv_dirty,		0x1c),
+	CMN_EVENT_HNF(CMN_ANY, stash_snp_sent,		0x1d),
+	CMN_EVENT_HNF(CMN_ANY, stash_data_pull,		0x1e),
+	CMN_EVENT_HNF(CMN_ANY, snp_fwded,		0x1f),
 
-	CMN_EVENT_HNI(rrt_rd_occ_cnt_ovfl, 0x20),
-	CMN_EVENT_HNI(rrt_wr_occ_cnt_ovfl, 0x21),
-	CMN_EVENT_HNI(rdt_rd_occ_cnt_ovfl, 0x22),
-	CMN_EVENT_HNI(rdt_wr_occ_cnt_ovfl, 0x23),
-	CMN_EVENT_HNI(wdb_occ_cnt_ovfl,	0x24),
-	CMN_EVENT_HNI(rrt_rd_alloc,	0x25),
-	CMN_EVENT_HNI(rrt_wr_alloc,	0x26),
-	CMN_EVENT_HNI(rdt_rd_alloc,	0x27),
-	CMN_EVENT_HNI(rdt_wr_alloc,	0x28),
-	CMN_EVENT_HNI(wdb_alloc,	0x29),
-	CMN_EVENT_HNI(txrsp_retryack,	0x2a),
-	CMN_EVENT_HNI(arvalid_no_arready, 0x2b),
-	CMN_EVENT_HNI(arready_no_arvalid, 0x2c),
-	CMN_EVENT_HNI(awvalid_no_awready, 0x2d),
-	CMN_EVENT_HNI(awready_no_awvalid, 0x2e),
-	CMN_EVENT_HNI(wvalid_no_wready,	0x2f),
-	CMN_EVENT_HNI(txdat_stall,	0x30),
-	CMN_EVENT_HNI(nonpcie_serialization, 0x31),
-	CMN_EVENT_HNI(pcie_serialization, 0x32),
+	CMN_EVENT_HNI(rrt_rd_occ_cnt_ovfl,		0x20),
+	CMN_EVENT_HNI(rrt_wr_occ_cnt_ovfl,		0x21),
+	CMN_EVENT_HNI(rdt_rd_occ_cnt_ovfl,		0x22),
+	CMN_EVENT_HNI(rdt_wr_occ_cnt_ovfl,		0x23),
+	CMN_EVENT_HNI(wdb_occ_cnt_ovfl,			0x24),
+	CMN_EVENT_HNI(rrt_rd_alloc,			0x25),
+	CMN_EVENT_HNI(rrt_wr_alloc,			0x26),
+	CMN_EVENT_HNI(rdt_rd_alloc,			0x27),
+	CMN_EVENT_HNI(rdt_wr_alloc,			0x28),
+	CMN_EVENT_HNI(wdb_alloc,			0x29),
+	CMN_EVENT_HNI(txrsp_retryack,			0x2a),
+	CMN_EVENT_HNI(arvalid_no_arready,		0x2b),
+	CMN_EVENT_HNI(arready_no_arvalid,		0x2c),
+	CMN_EVENT_HNI(awvalid_no_awready,		0x2d),
+	CMN_EVENT_HNI(awready_no_awvalid,		0x2e),
+	CMN_EVENT_HNI(wvalid_no_wready,			0x2f),
+	CMN_EVENT_HNI(txdat_stall,			0x30),
+	CMN_EVENT_HNI(nonpcie_serialization,		0x31),
+	CMN_EVENT_HNI(pcie_serialization,		0x32),
 
-	CMN_EVENT_XP(txflit_valid,	0x01),
-	CMN_EVENT_XP(txflit_stall,	0x02),
-	CMN_EVENT_XP(partial_dat_flit,	0x03),
+	CMN_EVENT_XP(txflit_valid,			0x01),
+	CMN_EVENT_XP(txflit_stall,			0x02),
+	CMN_EVENT_XP(partial_dat_flit,			0x03),
 	/* We treat watchpoints as a special made-up class of XP events */
-	CMN_EVENT_ATTR(watchpoint_up, CMN_TYPE_WP, 0, 0),
-	CMN_EVENT_ATTR(watchpoint_down, CMN_TYPE_WP, 2, 0),
+	CMN_EVENT_ATTR(CMN_ANY, watchpoint_up, CMN_TYPE_WP, CMN_WP_UP, 0),
+	CMN_EVENT_ATTR(CMN_ANY, watchpoint_down, CMN_TYPE_WP, CMN_WP_DOWN, 0),
 
-	CMN_EVENT_SBSX(rd_req,		0x01),
-	CMN_EVENT_SBSX(wr_req,		0x02),
-	CMN_EVENT_SBSX(cmo_req,		0x03),
-	CMN_EVENT_SBSX(txrsp_retryack,	0x04),
-	CMN_EVENT_SBSX(txdat_flitv,	0x05),
-	CMN_EVENT_SBSX(txrsp_flitv,	0x06),
-	CMN_EVENT_SBSX(rd_req_trkr_occ_cnt_ovfl, 0x11),
-	CMN_EVENT_SBSX(wr_req_trkr_occ_cnt_ovfl, 0x12),
-	CMN_EVENT_SBSX(cmo_req_trkr_occ_cnt_ovfl, 0x13),
-	CMN_EVENT_SBSX(wdb_occ_cnt_ovfl, 0x14),
-	CMN_EVENT_SBSX(rd_axi_trkr_occ_cnt_ovfl, 0x15),
-	CMN_EVENT_SBSX(cmo_axi_trkr_occ_cnt_ovfl, 0x16),
-	CMN_EVENT_SBSX(arvalid_no_arready, 0x21),
-	CMN_EVENT_SBSX(awvalid_no_awready, 0x22),
-	CMN_EVENT_SBSX(wvalid_no_wready, 0x23),
-	CMN_EVENT_SBSX(txdat_stall,	0x24),
-	CMN_EVENT_SBSX(txrsp_stall,	0x25),
+	CMN_EVENT_SBSX(CMN_ANY, rd_req,			0x01),
+	CMN_EVENT_SBSX(CMN_ANY, wr_req,			0x02),
+	CMN_EVENT_SBSX(CMN_ANY, cmo_req,		0x03),
+	CMN_EVENT_SBSX(CMN_ANY, txrsp_retryack,		0x04),
+	CMN_EVENT_SBSX(CMN_ANY, txdat_flitv,		0x05),
+	CMN_EVENT_SBSX(CMN_ANY, txrsp_flitv,		0x06),
+	CMN_EVENT_SBSX(CMN_ANY, rd_req_trkr_occ_cnt_ovfl, 0x11),
+	CMN_EVENT_SBSX(CMN_ANY, wr_req_trkr_occ_cnt_ovfl, 0x12),
+	CMN_EVENT_SBSX(CMN_ANY, cmo_req_trkr_occ_cnt_ovfl, 0x13),
+	CMN_EVENT_SBSX(CMN_ANY, wdb_occ_cnt_ovfl,	0x14),
+	CMN_EVENT_SBSX(CMN_ANY, rd_axi_trkr_occ_cnt_ovfl, 0x15),
+	CMN_EVENT_SBSX(CMN_ANY, cmo_axi_trkr_occ_cnt_ovfl, 0x16),
+	CMN_EVENT_SBSX(CMN_ANY, arvalid_no_arready,	0x21),
+	CMN_EVENT_SBSX(CMN_ANY, awvalid_no_awready,	0x22),
+	CMN_EVENT_SBSX(CMN_ANY, wvalid_no_wready,	0x23),
+	CMN_EVENT_SBSX(CMN_ANY, txdat_stall,		0x24),
+	CMN_EVENT_SBSX(CMN_ANY, txrsp_stall,		0x25),
 
-	CMN_EVENT_RNID(s0_rdata_beats,	0x01),
-	CMN_EVENT_RNID(s1_rdata_beats,	0x02),
-	CMN_EVENT_RNID(s2_rdata_beats,	0x03),
-	CMN_EVENT_RNID(rxdat_flits,	0x04),
-	CMN_EVENT_RNID(txdat_flits,	0x05),
-	CMN_EVENT_RNID(txreq_flits_total, 0x06),
-	CMN_EVENT_RNID(txreq_flits_retried, 0x07),
-	CMN_EVENT_RNID(rrt_occ_ovfl,	0x08),
-	CMN_EVENT_RNID(wrt_occ_ovfl,	0x09),
-	CMN_EVENT_RNID(txreq_flits_replayed, 0x0a),
-	CMN_EVENT_RNID(wrcancel_sent,	0x0b),
-	CMN_EVENT_RNID(s0_wdata_beats,	0x0c),
-	CMN_EVENT_RNID(s1_wdata_beats,	0x0d),
-	CMN_EVENT_RNID(s2_wdata_beats,	0x0e),
-	CMN_EVENT_RNID(rrt_alloc,	0x0f),
-	CMN_EVENT_RNID(wrt_alloc,	0x10),
-	CMN_EVENT_RNID(rdb_unord,	0x11),
-	CMN_EVENT_RNID(rdb_replay,	0x12),
-	CMN_EVENT_RNID(rdb_hybrid,	0x13),
-	CMN_EVENT_RNID(rdb_ord,		0x14),
+	CMN_EVENT_RNID(CMN_ANY, s0_rdata_beats,		0x01),
+	CMN_EVENT_RNID(CMN_ANY, s1_rdata_beats,		0x02),
+	CMN_EVENT_RNID(CMN_ANY, s2_rdata_beats,		0x03),
+	CMN_EVENT_RNID(CMN_ANY, rxdat_flits,		0x04),
+	CMN_EVENT_RNID(CMN_ANY, txdat_flits,		0x05),
+	CMN_EVENT_RNID(CMN_ANY, txreq_flits_total,	0x06),
+	CMN_EVENT_RNID(CMN_ANY, txreq_flits_retried,	0x07),
+	CMN_EVENT_RNID(CMN_ANY, rrt_occ_ovfl,		0x08),
+	CMN_EVENT_RNID(CMN_ANY, wrt_occ_ovfl,		0x09),
+	CMN_EVENT_RNID(CMN_ANY, txreq_flits_replayed,	0x0a),
+	CMN_EVENT_RNID(CMN_ANY, wrcancel_sent,		0x0b),
+	CMN_EVENT_RNID(CMN_ANY, s0_wdata_beats,		0x0c),
+	CMN_EVENT_RNID(CMN_ANY, s1_wdata_beats,		0x0d),
+	CMN_EVENT_RNID(CMN_ANY, s2_wdata_beats,		0x0e),
+	CMN_EVENT_RNID(CMN_ANY, rrt_alloc,		0x0f),
+	CMN_EVENT_RNID(CMN_ANY, wrt_alloc,		0x10),
+	CMN_EVENT_RNID(CMN600, rdb_unord,		0x11),
+	CMN_EVENT_RNID(CMN600, rdb_replay,		0x12),
+	CMN_EVENT_RNID(CMN600, rdb_hybrid,		0x13),
+	CMN_EVENT_RNID(CMN600, rdb_ord,			0x14),
 
 	NULL
 };
@@ -1386,15 +1400,14 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
 	int i, j;
 	size_t sz;
 
-	cfg_region = cmn->base + rgn_offset;
-	reg = readl_relaxed(cfg_region + CMN_CFGM_PERIPH_ID_2);
-	cmn->rev = FIELD_GET(CMN_CFGM_PID2_REVISION, reg);
-	dev_dbg(cmn->dev, "periph_id_2 revision: %d\n", cmn->rev);
-
 	arm_cmn_init_node_info(cmn, rgn_offset, &cfg);
 	if (cfg.type != CMN_TYPE_CFG)
 		return -ENODEV;
 
+	cfg_region = cmn->base + rgn_offset;
+	reg = readl_relaxed(cfg_region + CMN_CFGM_PERIPH_ID_2);
+	cmn->rev = FIELD_GET(CMN_CFGM_PID2_REVISION, reg);
+
 	reg = readq_relaxed(cfg_region + CMN_CHILD_INFO);
 	child_count = FIELD_GET(CMN_CI_CHILD_COUNT, reg);
 	child_poff = FIELD_GET(CMN_CI_CHILD_PTR_OFFSET, reg);
@@ -1507,13 +1520,14 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset)
 		cmn->mesh_x = cmn->num_xps;
 	cmn->mesh_y = cmn->num_xps / cmn->mesh_x;
 
+	dev_dbg(cmn->dev, "model %d, periph_id_2 revision %d\n", cmn->model, cmn->rev);
 	dev_dbg(cmn->dev, "mesh %dx%d, ID width %d\n",
 		cmn->mesh_x, cmn->mesh_y, arm_cmn_xyidbits(cmn));
 
 	return 0;
 }
 
-static int arm_cmn_acpi_probe(struct platform_device *pdev, struct arm_cmn *cmn)
+static int arm_cmn600_acpi_probe(struct platform_device *pdev, struct arm_cmn *cmn)
 {
 	struct resource *cfg, *root;
 
@@ -1540,21 +1554,11 @@ static int arm_cmn_acpi_probe(struct platform_device *pdev, struct arm_cmn *cmn)
 	return root->start - cfg->start;
 }
 
-static int arm_cmn_of_probe(struct platform_device *pdev, struct arm_cmn *cmn)
+static int arm_cmn600_of_probe(struct device_node *np)
 {
-	struct device_node *np = pdev->dev.of_node;
 	u32 rootnode;
-	int ret;
 
-	cmn->base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(cmn->base))
-		return PTR_ERR(cmn->base);
-
-	ret = of_property_read_u32(np, "arm,root-node", &rootnode);
-	if (ret)
-		return ret;
-
-	return rootnode;
+	return of_property_read_u32(np, "arm,root-node", &rootnode) ?: rootnode;
 }
 
 static int arm_cmn_probe(struct platform_device *pdev)
@@ -1569,12 +1573,19 @@ static int arm_cmn_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	cmn->dev = &pdev->dev;
+	cmn->model = (unsigned long)device_get_match_data(cmn->dev);
 	platform_set_drvdata(pdev, cmn);
 
-	if (has_acpi_companion(cmn->dev))
-		rootnode = arm_cmn_acpi_probe(pdev, cmn);
-	else
-		rootnode = arm_cmn_of_probe(pdev, cmn);
+	if (cmn->model == CMN600 && has_acpi_companion(cmn->dev)) {
+		rootnode = arm_cmn600_acpi_probe(pdev, cmn);
+	} else {
+		rootnode = 0;
+		cmn->base = devm_platform_ioremap_resource(pdev, 0);
+		if (IS_ERR(cmn->base))
+			return PTR_ERR(cmn->base);
+		if (cmn->model == CMN600)
+			rootnode = arm_cmn600_of_probe(pdev->dev.of_node);
+	}
 	if (rootnode < 0)
 		return rootnode;
 
@@ -1637,7 +1648,7 @@ static int arm_cmn_remove(struct platform_device *pdev)
 
 #ifdef CONFIG_OF
 static const struct of_device_id arm_cmn_of_match[] = {
-	{ .compatible = "arm,cmn-600", },
+	{ .compatible = "arm,cmn-600", .data = (void *)CMN600 },
 	{}
 };
 MODULE_DEVICE_TABLE(of, arm_cmn_of_match);
@@ -1645,7 +1656,7 @@ MODULE_DEVICE_TABLE(of, arm_cmn_of_match);
 
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id arm_cmn_acpi_match[] = {
-	{ "ARMHC600", },
+	{ "ARMHC600", CMN600 },
 	{}
 };
 MODULE_DEVICE_TABLE(acpi, arm_cmn_acpi_match);
-- 
2.28.0.dirty


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