habanalabs: move event handling to common firmware file

Instead of writing similar event handling code for each ASIC, move the code
to the common firmware file. This code will be used for GAUDI and all
future ASICs.

In addition, add two new fields to the auto-generated events file: valid
and description. This will save the need to manually write the events
description in the source code and simplify the code.
Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

drivers/misc/habanalabs/firmware_if.c

@@ -11,6 +11,7 @@
 #include <linux/firmware.h>
 #include <linux/genalloc.h>
 #include <linux/io-64-nonatomic-lo-hi.h>
+#include <linux/slab.h>
 
 /**
  * hl_fw_load_fw_to_device() - Load F/W code to device's memory.
@@ -130,6 +131,68 @@ int hl_fw_send_cpu_message(struct hl_device *hdev, u32 hw_queue_id, u32 *msg,
 	return rc;
 }
 
+int hl_fw_unmask_irq(struct hl_device *hdev, u16 event_type)
+{
+	struct armcp_packet pkt;
+	long result;
+	int rc;
+
+	memset(&pkt, 0, sizeof(pkt));
+
+	pkt.ctl = cpu_to_le32(ARMCP_PACKET_UNMASK_RAZWI_IRQ <<
+				ARMCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.value = cpu_to_le64(event_type);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+			HL_DEVICE_TIMEOUT_USEC, &result);
+
+	if (rc)
+		dev_err(hdev->dev, "failed to unmask RAZWI IRQ %d", event_type);
+
+	return rc;
+}
+
+int hl_fw_unmask_irq_arr(struct hl_device *hdev, const u32 *irq_arr,
+		size_t irq_arr_size)
+{
+	struct armcp_unmask_irq_arr_packet *pkt;
+	size_t total_pkt_size;
+	long result;
+	int rc;
+
+	total_pkt_size = sizeof(struct armcp_unmask_irq_arr_packet) +
+			irq_arr_size;
+
+	/* data should be aligned to 8 bytes in order to ArmCP to copy it */
+	total_pkt_size = (total_pkt_size + 0x7) & ~0x7;
+
+	/* total_pkt_size is casted to u16 later on */
+	if (total_pkt_size > USHRT_MAX) {
+		dev_err(hdev->dev, "too many elements in IRQ array\n");
+		return -EINVAL;
+	}
+
+	pkt = kzalloc(total_pkt_size, GFP_KERNEL);
+	if (!pkt)
+		return -ENOMEM;
+
+	pkt->length = cpu_to_le32(irq_arr_size / sizeof(irq_arr[0]));
+	memcpy(&pkt->irqs, irq_arr, irq_arr_size);
+
+	pkt->armcp_pkt.ctl = cpu_to_le32(ARMCP_PACKET_UNMASK_RAZWI_IRQ_ARRAY <<
+						ARMCP_PKT_CTL_OPCODE_SHIFT);
+
+	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) pkt,
+			total_pkt_size, HL_DEVICE_TIMEOUT_USEC, &result);
+
+	if (rc)
+		dev_err(hdev->dev, "failed to unmask IRQ array\n");
+
+	kfree(pkt);
+
+	return rc;
+}
+
 int hl_fw_test_cpu_queue(struct hl_device *hdev)
 {
 	struct armcp_packet test_pkt = {};

drivers/misc/habanalabs/gaudi/gaudiP.h

@@ -218,6 +218,7 @@ struct gaudi_internal_qman_info {
  *                  consecutive order.
  * @hbm_bar_cur_addr: current address of HBM PCI bar.
  * @max_freq_value: current max clk frequency.
+ * @events: array that holds all event id's
  * @events_stat: array that holds histogram of all received events.
  * @events_stat_aggregate: same as events_stat but doesn't get cleared on reset
  * @hw_cap_initialized: This field contains a bit per H/W engine. When that
@@ -241,6 +242,7 @@ struct gaudi_device {
 	u64				hbm_bar_cur_addr;
 	u64				max_freq_value;
 
+	u32				events[GAUDI_EVENT_SIZE];
 	u32				events_stat[GAUDI_EVENT_SIZE];
 	u32				events_stat_aggregate[GAUDI_EVENT_SIZE];
 	u32				hw_cap_initialized;

drivers/misc/habanalabs/habanalabs.h

@@ -1739,6 +1739,9 @@ int hl_fw_load_fw_to_device(struct hl_device *hdev, const char *fw_name,
 int hl_fw_send_pci_access_msg(struct hl_device *hdev, u32 opcode);
 int hl_fw_send_cpu_message(struct hl_device *hdev, u32 hw_queue_id, u32 *msg,
 				u16 len, u32 timeout, long *result);
+int hl_fw_unmask_irq(struct hl_device *hdev, u16 event_type);
+int hl_fw_unmask_irq_arr(struct hl_device *hdev, const u32 *irq_arr,
+		size_t irq_arr_size);
 int hl_fw_test_cpu_queue(struct hl_device *hdev);
 void *hl_fw_cpu_accessible_dma_pool_alloc(struct hl_device *hdev, size_t size,
 						dma_addr_t *dma_handle);