ocelot->map = felix->info->map;
ocelot->stats_layout = felix->info->stats_layout;
ocelot->num_stats = felix->info->num_stats;
- ocelot->shared_queue_sz = felix->info->shared_queue_sz;
ocelot->num_mact_rows = felix->info->num_mact_rows;
ocelot->vcap = felix->info->vcap;
ocelot->ops = felix->info->ops;
const struct reg_field *regfields;
const u32 *const *map;
const struct ocelot_ops *ops;
- int shared_queue_sz;
int num_mact_rows;
const struct ocelot_stat_layout *stats_layout;
unsigned int num_stats;
.stats_layout = vsc9959_stats_layout,
.num_stats = ARRAY_SIZE(vsc9959_stats_layout),
.vcap = vsc9959_vcap_props,
- .shared_queue_sz = 128 * 1024,
.num_mact_rows = 2048,
.num_ports = 6,
.num_tx_queues = FELIX_NUM_TC,
.stats_layout = vsc9953_stats_layout,
.num_stats = ARRAY_SIZE(vsc9953_stats_layout),
.vcap = vsc9953_vcap_props,
- .shared_queue_sz = 256 * 1024,
.num_mact_rows = 2048,
.num_ports = 10,
.mdio_bus_alloc = vsc9953_mdio_bus_alloc,
pause_stop);
/* Tail dropping watermarks */
- atop_tot = (ocelot->shared_queue_sz - 9 * maxlen) /
+ atop_tot = (ocelot->packet_buffer_size - 9 * maxlen) /
OCELOT_BUFFER_CELL_SZ;
atop = (9 * maxlen) / OCELOT_BUFFER_CELL_SZ;
ocelot_write_rix(ocelot, ocelot->ops->wm_enc(atop), SYS_ATOP, port);
ANA_PORT_VLAN_CFG, cpu);
}
+static void ocelot_detect_features(struct ocelot *ocelot)
+{
+ int mmgt, eq_ctrl;
+
+ /* For Ocelot, Felix, Seville, Serval etc, SYS:MMGT:MMGT:FREECNT holds
+ * the number of 240-byte free memory words (aka 4-cell chunks) and not
+ * 192 bytes as the documentation incorrectly says.
+ */
+ mmgt = ocelot_read(ocelot, SYS_MMGT);
+ ocelot->packet_buffer_size = 240 * SYS_MMGT_FREECNT(mmgt);
+
+ eq_ctrl = ocelot_read(ocelot, QSYS_EQ_CTRL);
+ ocelot->num_frame_refs = QSYS_MMGT_EQ_CTRL_FP_FREE_CNT(eq_ctrl);
+
+ dev_info(ocelot->dev,
+ "Detected %d bytes of packet buffer and %d frame references\n",
+ ocelot->packet_buffer_size, ocelot->num_frame_refs);
+}
+
int ocelot_init(struct ocelot *ocelot)
{
char queue_name[32];
INIT_LIST_HEAD(&ocelot->multicast);
INIT_LIST_HEAD(&ocelot->pgids);
+ ocelot_detect_features(ocelot);
ocelot_mact_init(ocelot);
ocelot_vlan_init(ocelot);
ocelot_vcap_init(ocelot);
ocelot->map = ocelot_regmap;
ocelot->stats_layout = ocelot_stats_layout;
ocelot->num_stats = ARRAY_SIZE(ocelot_stats_layout);
- ocelot->shared_queue_sz = 224 * 1024;
ocelot->num_mact_rows = 1024;
ocelot->ops = ops;
const struct ocelot_stat_layout *stats_layout;
unsigned int num_stats;
- int shared_queue_sz;
+ int packet_buffer_size;
+ int num_frame_refs;
int num_mact_rows;
struct net_device *hw_bridge_dev;
#define QSYS_RES_STAT_MAXUSE(x) ((x) & GENMASK(11, 0))
#define QSYS_RES_STAT_MAXUSE_M GENMASK(11, 0)
+#define QSYS_MMGT_EQ_CTRL_FP_FREE_CNT(x) ((x) & GENMASK(15, 0))
+#define QSYS_MMGT_EQ_CTRL_FP_FREE_CNT_M GENMASK(15, 0)
+
#define QSYS_EVENTS_CORE_EV_FDC(x) (((x) << 2) & GENMASK(4, 2))
#define QSYS_EVENTS_CORE_EV_FDC_M GENMASK(4, 2)
#define QSYS_EVENTS_CORE_EV_FDC_X(x) (((x) & GENMASK(4, 2)) >> 2)