};
/**
+ * struct aqmq_drbl - AQM Queue Doorbell Counter Registers
+ * @dbell_count: Doorbell Counter
+ */
+union aqmq_drbl {
+ u64 value;
+ struct {
+#if (defined(__BIG_ENDIAN_BITFIELD))
+ u64 raz_32_63 : 32;
+ u64 dbell_count : 32;
+#else
+ u64 dbell_count : 32;
+ u64 raz_32_63 : 32;
+#endif
+ };
+};
+
+/**
+ * struct aqmq_qsz - AQM Queue Host Queue Size Registers
+ * @host_queue_size: Size, in numbers of 'aqmq_command_s' command
+ * of the Host Ring.
+ */
+union aqmq_qsz {
+ u64 value;
+ struct {
+#if (defined(__BIG_ENDIAN_BITFIELD))
+ u64 raz_32_63 : 32;
+ u64 host_queue_size : 32;
+#else
+ u64 host_queue_size : 32;
+ u64 raz_32_63 : 32;
+#endif
+ };
+};
+
+/**
+ * struct aqmq_cmp_thr - AQM Queue Commands Completed Threshold Registers
+ * @commands_completed_threshold: Count of 'aqmq_command_s' commands executed
+ * by AE engines for which completion interrupt is asserted.
+ */
+union aqmq_cmp_thr {
+ u64 value;
+ struct {
+#if (defined(__BIG_ENDIAN_BITFIELD))
+ u64 raz_32_63 : 32;
+ u64 commands_completed_threshold : 32;
+#else
+ u64 commands_completed_threshold : 32;
+ u64 raz_32_63 : 32;
+#endif
+ };
+};
+
+/**
+ * struct aqmq_cmp_cnt - AQM Queue Commands Completed Count Registers
+ * @resend: Bit to request completion interrupt Resend.
+ * @completion_status: Command completion status of the ring.
+ * @commands_completed_count: Count of 'aqmq_command_s' commands executed by
+ * AE engines.
+ */
+union aqmq_cmp_cnt {
+ u64 value;
+ struct {
+#if (defined(__BIG_ENDIAN_BITFIELD))
+ u64 raz_34_63 : 30;
+ u64 resend : 1;
+ u64 completion_status : 1;
+ u64 commands_completed_count : 32;
+#else
+ u64 commands_completed_count : 32;
+ u64 completion_status : 1;
+ u64 resend : 1;
+ u64 raz_34_63 : 30;
+#endif
+ };
+};
+
+/**
+ * struct aqmq_en - AQM Queue Enable Registers
+ * @queue_status: 1 = AQMQ is enabled, 0 = AQMQ is disabled
+ */
+union aqmq_en {
+ u64 value;
+ struct {
+#if (defined(__BIG_ENDIAN_BITFIELD))
+ u64 raz_1_63 : 63;
+ u64 queue_enable : 1;
+#else
+ u64 queue_enable : 1;
+ u64 raz_1_63 : 63;
+#endif
+ };
+};
+
+/**
+ * struct aqmq_activity_stat - AQM Queue Activity Status Registers
+ * @queue_active: 1 = AQMQ is active, 0 = AQMQ is quiescent
+ */
+union aqmq_activity_stat {
+ u64 value;
+ struct {
+#if (defined(__BIG_ENDIAN_BITFIELD))
+ u64 raz_1_63 : 63;
+ u64 queue_active : 1;
+#else
+ u64 queue_active : 1;
+ u64 raz_1_63 : 63;
+#endif
+ };
+};
+
+/**
* struct emu_fuse_map - EMU Fuse Map Registers
* @ae_fuse: Fuse settings for AE 19..0
* @se_fuse: Fuse settings for SE 15..0
}
/**
- * enable_nps_interrupts - enable NPS interrutps
+ * enable_nps_core_interrupts - enable NPS core interrutps
* @ndev: NITROX device.
*
- * This includes NPS core, packet in and slc interrupts.
+ * This includes NPS core interrupts.
*/
-static void enable_nps_interrupts(struct nitrox_device *ndev)
+static void enable_nps_core_interrupts(struct nitrox_device *ndev)
{
union nps_core_int_ena_w1s core_int;
core_int.s.npco_dma_malform = 1;
core_int.s.host_nps_wr_err = 1;
nitrox_write_csr(ndev, NPS_CORE_INT_ENA_W1S, core_int.value);
-
- /* NPS packet in ring interrupts */
- nitrox_write_csr(ndev, NPS_PKT_IN_RERR_LO_ENA_W1S, (~0ULL));
- nitrox_write_csr(ndev, NPS_PKT_IN_RERR_HI_ENA_W1S, (~0ULL));
- nitrox_write_csr(ndev, NPS_PKT_IN_ERR_TYPE_ENA_W1S, (~0ULL));
- /* NPS packet slc port interrupts */
- nitrox_write_csr(ndev, NPS_PKT_SLC_RERR_HI_ENA_W1S, (~0ULL));
- nitrox_write_csr(ndev, NPS_PKT_SLC_RERR_LO_ENA_W1S, (~0ULL));
- nitrox_write_csr(ndev, NPS_PKT_SLC_ERR_TYPE_ENA_W1S, (~0uLL));
}
-void nitrox_config_nps_unit(struct nitrox_device *ndev)
+void nitrox_config_nps_core_unit(struct nitrox_device *ndev)
{
union nps_core_gbl_vfcfg core_gbl_vfcfg;
core_gbl_vfcfg.s.ilk_disable = 1;
core_gbl_vfcfg.s.cfg = __NDEV_MODE_PF;
nitrox_write_csr(ndev, NPS_CORE_GBL_VFCFG, core_gbl_vfcfg.value);
+
+ /* enable nps core interrupts */
+ enable_nps_core_interrupts(ndev);
+}
+
+/**
+ * enable_nps_pkt_interrupts - enable NPS packet interrutps
+ * @ndev: NITROX device.
+ *
+ * This includes NPS packet in and slc interrupts.
+ */
+static void enable_nps_pkt_interrupts(struct nitrox_device *ndev)
+{
+ /* NPS packet in ring interrupts */
+ nitrox_write_csr(ndev, NPS_PKT_IN_RERR_LO_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, NPS_PKT_IN_RERR_HI_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, NPS_PKT_IN_ERR_TYPE_ENA_W1S, (~0ULL));
+ /* NPS packet slc port interrupts */
+ nitrox_write_csr(ndev, NPS_PKT_SLC_RERR_HI_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, NPS_PKT_SLC_RERR_LO_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, NPS_PKT_SLC_ERR_TYPE_ENA_W1S, (~0uLL));
+}
+
+void nitrox_config_nps_pkt_unit(struct nitrox_device *ndev)
+{
/* config input and solicit ports */
nitrox_config_pkt_input_rings(ndev);
nitrox_config_pkt_solicit_ports(ndev);
- /* enable interrupts */
- enable_nps_interrupts(ndev);
+ /* enable nps packet interrupts */
+ enable_nps_pkt_interrupts(ndev);
+}
+
+static void reset_aqm_ring(struct nitrox_device *ndev, int ring)
+{
+ union aqmq_en aqmq_en_reg;
+ union aqmq_activity_stat activity_stat;
+ union aqmq_cmp_cnt cmp_cnt;
+ int max_retries = MAX_CSR_RETRIES;
+ u64 offset;
+
+ /* step 1: disable the queue */
+ offset = AQMQ_ENX(ring);
+ aqmq_en_reg.value = 0;
+ aqmq_en_reg.queue_enable = 0;
+ nitrox_write_csr(ndev, offset, aqmq_en_reg.value);
+
+ /* step 2: wait for AQMQ_ACTIVITY_STATX[QUEUE_ACTIVE] to clear */
+ usleep_range(100, 150);
+ offset = AQMQ_ACTIVITY_STATX(ring);
+ do {
+ activity_stat.value = nitrox_read_csr(ndev, offset);
+ if (!activity_stat.queue_active)
+ break;
+ udelay(50);
+ } while (max_retries--);
+
+ /* step 3: clear commands completed count */
+ offset = AQMQ_CMP_CNTX(ring);
+ cmp_cnt.value = nitrox_read_csr(ndev, offset);
+ nitrox_write_csr(ndev, offset, cmp_cnt.value);
+ usleep_range(50, 100);
+}
+
+void enable_aqm_ring(struct nitrox_device *ndev, int ring)
+{
+ union aqmq_en aqmq_en_reg;
+ u64 offset;
+
+ offset = AQMQ_ENX(ring);
+ aqmq_en_reg.value = 0;
+ aqmq_en_reg.queue_enable = 1;
+ nitrox_write_csr(ndev, offset, aqmq_en_reg.value);
+ usleep_range(50, 100);
+}
+
+void nitrox_config_aqm_rings(struct nitrox_device *ndev)
+{
+ int ring;
+
+ for (ring = 0; ring < ndev->nr_queues; ring++) {
+ struct nitrox_cmdq *cmdq = ndev->aqmq[ring];
+ union aqmq_drbl drbl;
+ union aqmq_qsz qsize;
+ union aqmq_cmp_thr cmp_thr;
+ u64 offset;
+
+ /* steps 1 - 3 */
+ reset_aqm_ring(ndev, ring);
+
+ /* step 4: clear doorbell count of ring */
+ offset = AQMQ_DRBLX(ring);
+ drbl.value = 0;
+ drbl.dbell_count = 0xFFFFFFFF;
+ nitrox_write_csr(ndev, offset, drbl.value);
+
+ /* step 5: configure host ring details */
+
+ /* set host address for next command of ring */
+ offset = AQMQ_NXT_CMDX(ring);
+ nitrox_write_csr(ndev, offset, 0ULL);
+
+ /* set host address of ring base */
+ offset = AQMQ_BADRX(ring);
+ nitrox_write_csr(ndev, offset, cmdq->dma);
+
+ /* set ring size */
+ offset = AQMQ_QSZX(ring);
+ qsize.value = 0;
+ qsize.host_queue_size = ndev->qlen;
+ nitrox_write_csr(ndev, offset, qsize.value);
+
+ /* set command completion threshold */
+ offset = AQMQ_CMP_THRX(ring);
+ cmp_thr.value = 0;
+ cmp_thr.commands_completed_threshold = 1;
+ nitrox_write_csr(ndev, offset, cmp_thr.value);
+
+ /* step 6: enable the queue */
+ enable_aqm_ring(ndev, ring);
+ }
+}
+
+static void enable_aqm_interrupts(struct nitrox_device *ndev)
+{
+ /* clear interrupt enable bits */
+ nitrox_write_csr(ndev, AQM_DBELL_OVF_LO_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, AQM_DBELL_OVF_HI_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, AQM_DMA_RD_ERR_LO_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, AQM_DMA_RD_ERR_HI_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, AQM_EXEC_NA_LO_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, AQM_EXEC_NA_HI_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, AQM_EXEC_ERR_LO_ENA_W1S, (~0ULL));
+ nitrox_write_csr(ndev, AQM_EXEC_ERR_HI_ENA_W1S, (~0ULL));
+}
+
+void nitrox_config_aqm_unit(struct nitrox_device *ndev)
+{
+ /* config aqm command queues */
+ nitrox_config_aqm_rings(ndev);
+
+ /* enable aqm interrupts */
+ enable_aqm_interrupts(ndev);
}
void nitrox_config_pom_unit(struct nitrox_device *ndev)
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