habanalabs/gaudi: add support for NIC QMANs

Initialize the QMANs that are responsible to submit doorbells to the NIC
engines. Add support for stopping and disabling them, and reset them as
part of the hard-reset procedure of GAUDI. This will allow the user to
submit work to the NICs.

Add support for receiving events on QMAN errors from the firmware.

However, the nic_ports_mask is still initialized to 0. That means this code
won't initialize the QMANs just yet. That will be in a later patch.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

drivers/misc/habanalabs/common/habanalabs.h

@@ -1633,8 +1633,6 @@ struct hl_mmu_funcs {
  * @pmmu_huge_range: is a different virtual addresses range used for PMMU with
  *                   huge pages.
  * @init_done: is the initialization of the device done.
- * @mmu_enable: is MMU enabled.
- * @mmu_huge_page_opt: is MMU huge pages optimization enabled.
  * @device_cpu_disabled: is the device CPU disabled (due to timeouts)
  * @dma_mask: the dma mask that was set for this device
  * @in_debug: is device under debug. This, together with fpriv_list, enforces
@@ -1750,6 +1748,7 @@ struct hl_device {
 	u8				supports_cb_mapping;
 
 	/* Parameters for bring-up */
+	u64				nic_ports_mask;
 	u64				fw_loading;
 	u8				mmu_enable;
 	u8				mmu_huge_page_opt;

drivers/misc/habanalabs/gaudi/gaudiP.h

@@ -79,6 +79,7 @@
 #define TPC_QMAN_OFFSET		(mmTPC1_QM_BASE - mmTPC0_QM_BASE)
 #define MME_QMAN_OFFSET		(mmMME1_QM_BASE - mmMME0_QM_BASE)
 #define NIC_MACRO_QMAN_OFFSET	(mmNIC1_QM0_BASE - mmNIC0_QM0_BASE)
+#define NIC_ENGINE_QMAN_OFFSET	(mmNIC0_QM1_BASE - mmNIC0_QM0_BASE)
 
 #define TPC_CFG_OFFSET		(mmTPC1_CFG_BASE - mmTPC0_CFG_BASE)
 
@@ -140,6 +141,10 @@
 #define TPC_QMAN_LENGTH			1024
 #define TPC_QMAN_SIZE_IN_BYTES		(TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE)
 
+#define NIC_QMAN_LENGTH			1024
+#define NIC_QMAN_SIZE_IN_BYTES		(NIC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE)
+
+
 #define SRAM_USER_BASE_OFFSET  GAUDI_DRIVER_SRAM_RESERVED_SIZE_FROM_START
 
 /* Virtual address space */
@@ -161,6 +166,19 @@
 #define HW_CAP_SRAM_SCRAMBLER	BIT(10)
 #define HW_CAP_HBM_SCRAMBLER	BIT(11)
 
+#define HW_CAP_NIC0		BIT(14)
+#define HW_CAP_NIC1		BIT(15)
+#define HW_CAP_NIC2		BIT(16)
+#define HW_CAP_NIC3		BIT(17)
+#define HW_CAP_NIC4		BIT(18)
+#define HW_CAP_NIC5		BIT(19)
+#define HW_CAP_NIC6		BIT(20)
+#define HW_CAP_NIC7		BIT(21)
+#define HW_CAP_NIC8		BIT(22)
+#define HW_CAP_NIC9		BIT(23)
+#define HW_CAP_NIC_MASK		GENMASK(23, 14)
+#define HW_CAP_NIC_SHIFT	14
+
 #define HW_CAP_TPC0		BIT(24)
 #define HW_CAP_TPC1		BIT(25)
 #define HW_CAP_TPC2		BIT(26)
@@ -208,6 +226,20 @@ enum gaudi_tpc_mask {
 	GAUDI_TPC_MASK_ALL = 0xFF
 };
 
+enum gaudi_nic_mask {
+	GAUDI_NIC_MASK_NIC0 = 0x01,
+	GAUDI_NIC_MASK_NIC1 = 0x02,
+	GAUDI_NIC_MASK_NIC2 = 0x04,
+	GAUDI_NIC_MASK_NIC3 = 0x08,
+	GAUDI_NIC_MASK_NIC4 = 0x10,
+	GAUDI_NIC_MASK_NIC5 = 0x20,
+	GAUDI_NIC_MASK_NIC6 = 0x40,
+	GAUDI_NIC_MASK_NIC7 = 0x80,
+	GAUDI_NIC_MASK_NIC8 = 0x100,
+	GAUDI_NIC_MASK_NIC9 = 0x200,
+	GAUDI_NIC_MASK_ALL = 0x3FF
+};
+
 /**
  * struct gaudi_internal_qman_info - Internal QMAN information.
  * @pq_kernel_addr: Kernel address of the PQ memory area in the host.