1 files changed, 295 insertions, 2 deletions

diff --git a/drivers/misc/habanalabs/firmware_if.c b/drivers/misc/habanalabs/firmware_if.c
index f5bd03171dac..baf790cf4b78 100644
--- a/drivers/misc/habanalabs/firmware_if.c
+++ b/drivers/misc/habanalabs/firmware_if.c
@@ -6,20 +6,22 @@
  */
 
 #include "habanalabs.h"
+#include "include/hl_boot_if.h"
 
 #include <linux/firmware.h>
 #include <linux/genalloc.h>
 #include <linux/io-64-nonatomic-lo-hi.h>
+#include <linux/slab.h>
 
 /**
- * hl_fw_push_fw_to_device() - Push FW code to device.
+ * hl_fw_load_fw_to_device() - Load F/W code to device's memory.
  * @hdev: pointer to hl_device structure.
  *
  * Copy fw code from firmware file to device memory.
  *
  * Return: 0 on success, non-zero for failure.
  */
-int hl_fw_push_fw_to_device(struct hl_device *hdev, const char *fw_name,
+int hl_fw_load_fw_to_device(struct hl_device *hdev, const char *fw_name,
 				void __iomem *dst)
 {
 	const struct firmware *fw;
@@ -129,6 +131,68 @@ out:
 	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 = {};
@@ -286,3 +350,232 @@ out:
 
 	return rc;
 }
+
+static void fw_read_errors(struct hl_device *hdev, u32 boot_err0_reg)
+{
+	u32 err_val;
+
+	/* Some of the firmware status codes are deprecated in newer f/w
+	 * versions. In those versions, the errors are reported
+	 * in different registers. Therefore, we need to check those
+	 * registers and print the exact errors. Moreover, there
+	 * may be multiple errors, so we need to report on each error
+	 * separately. Some of the error codes might indicate a state
+	 * that is not an error per-se, but it is an error in production
+	 * environment
+	 */
+	err_val = RREG32(boot_err0_reg);
+	if (!(err_val & CPU_BOOT_ERR0_ENABLED))
+		return;
+
+	if (err_val & CPU_BOOT_ERR0_DRAM_INIT_FAIL)
+		dev_err(hdev->dev,
+			"Device boot error - DRAM initialization failed\n");
+	if (err_val & CPU_BOOT_ERR0_FIT_CORRUPTED)
+		dev_err(hdev->dev, "Device boot error - FIT image corrupted\n");
+	if (err_val & CPU_BOOT_ERR0_TS_INIT_FAIL)
+		dev_err(hdev->dev,
+			"Device boot error - Thermal Sensor initialization failed\n");
+	if (err_val & CPU_BOOT_ERR0_DRAM_SKIPPED)
+		dev_warn(hdev->dev,
+			"Device boot warning - Skipped DRAM initialization\n");
+	if (err_val & CPU_BOOT_ERR0_BMC_WAIT_SKIPPED)
+		dev_warn(hdev->dev,
+			"Device boot error - Skipped waiting for BMC\n");
+	if (err_val & CPU_BOOT_ERR0_NIC_DATA_NOT_RDY)
+		dev_err(hdev->dev,
+			"Device boot error - Serdes data from BMC not available\n");
+	if (err_val & CPU_BOOT_ERR0_NIC_FW_FAIL)
+		dev_err(hdev->dev,
+			"Device boot error - NIC F/W initialization failed\n");
+}
+
+int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg,
+			u32 msg_to_cpu_reg, u32 cpu_msg_status_reg,
+			u32 boot_err0_reg, bool skip_bmc,
+			u32 cpu_timeout, u32 boot_fit_timeout)
+{
+	u32 status;
+	int rc;
+
+	dev_info(hdev->dev, "Going to wait for device boot (up to %lds)\n",
+		cpu_timeout / USEC_PER_SEC);
+
+	/* Wait for boot FIT request */
+	rc = hl_poll_timeout(
+		hdev,
+		cpu_boot_status_reg,
+		status,
+		status == CPU_BOOT_STATUS_WAITING_FOR_BOOT_FIT,
+		10000,
+		boot_fit_timeout);
+
+	if (rc) {
+		dev_dbg(hdev->dev,
+			"No boot fit request received, resuming boot\n");
+	} else {
+		rc = hdev->asic_funcs->load_boot_fit_to_device(hdev);
+		if (rc)
+			goto out;
+
+		/* Clear device CPU message status */
+		WREG32(cpu_msg_status_reg, CPU_MSG_CLR);
+
+		/* Signal device CPU that boot loader is ready */
+		WREG32(msg_to_cpu_reg, KMD_MSG_FIT_RDY);
+
+		/* Poll for CPU device ack */
+		rc = hl_poll_timeout(
+			hdev,
+			cpu_msg_status_reg,
+			status,
+			status == CPU_MSG_OK,
+			10000,
+			boot_fit_timeout);
+
+		if (rc) {
+			dev_err(hdev->dev,
+				"Timeout waiting for boot fit load ack\n");
+			goto out;
+		}
+
+		/* Clear message */
+		WREG32(msg_to_cpu_reg, KMD_MSG_NA);
+	}
+
+	/* Make sure CPU boot-loader is running */
+	rc = hl_poll_timeout(
+		hdev,
+		cpu_boot_status_reg,
+		status,
+		(status == CPU_BOOT_STATUS_DRAM_RDY) ||
+		(status == CPU_BOOT_STATUS_NIC_FW_RDY) ||
+		(status == CPU_BOOT_STATUS_READY_TO_BOOT) ||
+		(status == CPU_BOOT_STATUS_SRAM_AVAIL),
+		10000,
+		cpu_timeout);
+
+	/* Read U-Boot, preboot versions now in case we will later fail */
+	hdev->asic_funcs->read_device_fw_version(hdev, FW_COMP_UBOOT);
+	hdev->asic_funcs->read_device_fw_version(hdev, FW_COMP_PREBOOT);
+
+	/* Some of the status codes below are deprecated in newer f/w
+	 * versions but we keep them here for backward compatibility
+	 */
+	if (rc) {
+		switch (status) {
+		case CPU_BOOT_STATUS_NA:
+			dev_err(hdev->dev,
+				"Device boot error - BTL did NOT run\n");
+			break;
+		case CPU_BOOT_STATUS_IN_WFE:
+			dev_err(hdev->dev,
+				"Device boot error - Stuck inside WFE loop\n");
+			break;
+		case CPU_BOOT_STATUS_IN_BTL:
+			dev_err(hdev->dev,
+				"Device boot error - Stuck in BTL\n");
+			break;
+		case CPU_BOOT_STATUS_IN_PREBOOT:
+			dev_err(hdev->dev,
+				"Device boot error - Stuck in Preboot\n");
+			break;
+		case CPU_BOOT_STATUS_IN_SPL:
+			dev_err(hdev->dev,
+				"Device boot error - Stuck in SPL\n");
+			break;
+		case CPU_BOOT_STATUS_IN_UBOOT:
+			dev_err(hdev->dev,
+				"Device boot error - Stuck in u-boot\n");
+			break;
+		case CPU_BOOT_STATUS_DRAM_INIT_FAIL:
+			dev_err(hdev->dev,
+				"Device boot error - DRAM initialization failed\n");
+			break;
+		case CPU_BOOT_STATUS_UBOOT_NOT_READY:
+			dev_err(hdev->dev,
+				"Device boot error - u-boot stopped by user\n");
+			break;
+		case CPU_BOOT_STATUS_TS_INIT_FAIL:
+			dev_err(hdev->dev,
+				"Device boot error - Thermal Sensor initialization failed\n");
+			break;
+		default:
+			dev_err(hdev->dev,
+				"Device boot error - Invalid status code %d\n",
+				status);
+			break;
+		}
+
+		rc = -EIO;
+		goto out;
+	}
+
+	if (!hdev->fw_loading) {
+		dev_info(hdev->dev, "Skip loading FW\n");
+		goto out;
+	}
+
+	if (status == CPU_BOOT_STATUS_SRAM_AVAIL)
+		goto out;
+
+	dev_info(hdev->dev,
+		"Loading firmware to device, may take some time...\n");
+
+	rc = hdev->asic_funcs->load_firmware_to_device(hdev);
+	if (rc)
+		goto out;
+
+	if (skip_bmc) {
+		WREG32(msg_to_cpu_reg, KMD_MSG_SKIP_BMC);
+
+		rc = hl_poll_timeout(
+			hdev,
+			cpu_boot_status_reg,
+			status,
+			(status == CPU_BOOT_STATUS_BMC_WAITING_SKIPPED),
+			10000,
+			cpu_timeout);
+
+		if (rc) {
+			dev_err(hdev->dev,
+				"Failed to get ACK on skipping BMC, %d\n",
+				status);
+			WREG32(msg_to_cpu_reg, KMD_MSG_NA);
+			rc = -EIO;
+			goto out;
+		}
+	}
+
+	WREG32(msg_to_cpu_reg, KMD_MSG_FIT_RDY);
+
+	rc = hl_poll_timeout(
+		hdev,
+		cpu_boot_status_reg,
+		status,
+		(status == CPU_BOOT_STATUS_SRAM_AVAIL),
+		10000,
+		cpu_timeout);
+
+	/* Clear message */
+	WREG32(msg_to_cpu_reg, KMD_MSG_NA);
+
+	if (rc) {
+		if (status == CPU_BOOT_STATUS_FIT_CORRUPTED)
+			dev_err(hdev->dev,
+				"Device reports FIT image is corrupted\n");
+		else
+			dev_err(hdev->dev,
+				"Device failed to load, %d\n", status);
+
+		rc = -EIO;
+		goto out;
+	}
+
+	dev_info(hdev->dev, "Successfully loaded firmware to device\n");
+
+out:
+	fw_read_errors(hdev, boot_err0_reg);
+
+	return rc;
+}